ABB OTM ATS Auto Transfer Switch Instruction Manual

Automatic transfer switches, OTM_C_D_

Installation and operating instructions34OTM_C_D / 1SCC303003M0204

31SCC303003M0204, rev. D

Installation and operating instructions, OTM_C_D_Contents

Contents1. Introduction ....................................................................................................................... 51.1 Use of symbols .............................................................................................................................51.2 Explanations of abbreviations and terms .....................................................................................6

2. Product overview .............................................................................................................. 72.1 Functions of automatic control units OMD_ .................................................................................8

3. Description ....................................................................................................................... 93.1 Switching sequence .....................................................................................................................9

4. Quick start ....................................................................................................................... 104.1 Operating the switch electrically .................................................................................................104.1.1 Operating the switch electrically / Manual Mode .......................................................................104.1.2 Operating the switch electrically / Automatic Mode ...................................................................124.1.3 Selection of delay time, voltage threshold and TEST function ...................................................124.1.4 Locking electrical operation........................................................................................................134.2 Operating the switch manually (local operation) .........................................................................14

5. Installation ....................................................................................................................... 165.1 Mounting the OTM_ automatic transfer switch ..........................................................................165.2 Dimensional drawings.................................................................................................................185.3 Parameter settings by DIP switches in the automatic control units OMD100, OMD200 and OMD300 .....................................................................................................................................335.3.1 Parameter settings OMD100 ......................................................................................................345.3.2 Parameter settings OMD200 and OMD300 ................................................................................345.4 Mounting the automatic control unit OMD_ ...............................................................................375.4.1 Automatic control unit OMD_ on the switch ...............................................................................375.4.2 Automatic control unit OMD_ , door mounting ...........................................................................395.5.3 Automatic control unit OMD_ , DIN-rail mounting ......................................................................40

6. Connecting ..................................................................................................................... 416.1 Power circuit ...............................................................................................................................416.1.1 Power circuit of the automatic control unit OMD100 .................................................................426.1.2 Power circuit of the automatic control unit OMD200 and OMD300 ...........................................426.1.3 Power circuit of the automatic control unit OMD800: ................................................................426.2 Control circuit .............................................................................................................................436.2.1 Control circuit of the automatic control unit OMD100 ................................................................466.2.2 Control circuit of the automatic control unit OMD200 ................................................................486.2.3 Control circuit of the automatic control unit OMD300 ................................................................506.2.4 Control circuit of the automatic control unit OMD800 ................................................................526.2.5 OMD_ outputs ............................................................................................................................546.2.6 OMD_ inputs ..............................................................................................................................54

7. Operating ......................................................................................................................... 567.1 Electrical operation .....................................................................................................................567.1.1 Operating the switch electrically / Manual Mode .......................................................................587.1.2 Operating the switch electrically / Automatic Mode ...................................................................60

7.1.3 Selection of delay time, voltage threshold and TEST function ...................................................617.2 Manual operation using the handle ............................................................................................627.3 Locking .......................................................................................................................................647.3.1 Locking the electrical operation .................................................................................................64

Installation and operating instructions, OTM_C_D_

1SCC303003M0204, rev. D

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Contents

7.3.2 Locking the manual operation ....................................................................................................64

8. Technical data ................................................................................................................. 668.1 Automatic transfer switch OTM_C_D, power circuits .................................................................668.2 Motor operator OME_, control circuits .......................................................................................67

9. Using automatic control unit OMD100 ........................................................................ 689.1 Interface ......................................................................................................................................689.2 Confi guration ..............................................................................................................................689.2.1 Rotary Switches ..........................................................................................................................689.2.2 Keypad ........................................................................................................................................699.2.3 LEDs ...........................................................................................................................................709.3 TEST sequence ..........................................................................................................................71

10. Using automatic control units OMD200 and OMD300 ................................................ 7210.1 Interface ......................................................................................................................................7210.2 Confi guration .............................................................................................................................7210.2.1 Rotary Switches ..........................................................................................................................7210.2.2 Keypad ........................................................................................................................................7310.2.3 LEDs ...........................................................................................................................................7410.2.4 External transformer ...................................................................................................................7510.3 TEST sequence ..........................................................................................................................75

11. Using automatic control unit OMD800 ......................................................................... 7611.1 Interface ......................................................................................................................................7611.2 Confi guration ..............................................................................................................................7611.2.1 Keypad ........................................................................................................................................7611.2.2 LEDs ...........................................................................................................................................7711.2.3 Display ........................................................................................................................................7811.2.4 Dialogue functions required for OMD800 status information via Modbus .................................87

12. Technical data of the automatic control units OMD_ .................................................. 8812.1 OMD100......................................................................................................................................8812.2 OMD200 / OMD300 ....................................................................................................................8812.3 OMD800......................................................................................................................................89

13. Troubleshooting .............................................................................................................. 9013.1 OMD100, OMD200 or OMD300 .................................................................................................9013.2 OMD800......................................................................................................................................9113.3 Explanations of internal faults OMD100, OMD200, OMD300, OMD800 ....................................9113.4 Change-over switch does not respond ......................................................................................92

14. Accessories ..................................................................................................................... 9314.1 Terminal clamp sets ....................................................................................................................9314.2 Bridging bars ..............................................................................................................................9414.3 Auxiliary contact blocks ..............................................................................................................9614.4 Terminal shrouds .........................................................................................................................9714.5 Handle and spare fuse storage ...................................................................................................9914.6 Fastener ......................................................................................................................................9914.7 Cover plate ...............................................................................................................................100

15. UL standard switches ................................................................................................... 10115.1 Phase barriers ...........................................................................................................................102

51SCC303003M0204, rev. D


1. IntroductionThis manual describes the installation and the basic operation of the OTM160-1600_C_D_ automatic transfer switches. The instructive part is followed by a section on available accessories.

1.1 Use of symbols

1. Introduction

Hazardous voltage: warns about a situation where a hazardous voltage may cause physical injury to a person or damage to equipment.

General warning: warns about a situation where something other than electrical equipment may cause physical injury to a person or damage to equipment.

Caution: provides important information or warns about a situation that may have a detrimental effect on equipment.

Information: provides important information about the equipment.


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1.2 Explanations of abbreviations and termsOTM_C_D_: Automatic transfer switch, the type name

OME: Motor operator, the type name

OMD: The control unit of automatic transfer switching equipment, common type name for the automatic control unit

OMD100: The automatic control unit, basic version with simplifi ed functionalities

OMD200: The automatic control unit, standard version

OMD300: The automatic control unit, standard version with additional power supply control

OMD800: The automatic control unit, high version with communication and display

DPS: Dual power source

Modbus RTU: Bus communication protocol

LN1-Switch I: Power supply line, eg. the primary line

LN2-Switch II: Power supply line, eg. the secondary line used in emergency cases

Test sequence: A sequence to test the functionality of the OMD and the connected change-over switch

Ts Switching delay (0...60 s, 0 s default)

DB I to II Dead band I to II (0...60 s, 0 s default)

TBs Back switching delay (0...59 s, 1...30 min, 0 s default)

DB II to I Dead band I to II (0...60 s, 0 s default)

Gs Generator stop delay (0...59 s, 1...30 min, 0 s default)

1. Introduction

71SCC303003M0204, rev. D


2. Product overviewAutomatic transfer switches (type OTM160...1600_C_D_) are designed for diverse applications to choose and to switch between two power supplies. You can operate the OTM_ automatic transfer switches either electrically by choosing the Automatic / Manual Mode or manually by using the handle. The operation either electrical or manual can be chosen by the selector switch Motor/Manual on the motor operator.

OTM_ automatic transfer switches consist of the change-over switch, the motor operator and the automatic control unit. The automatic control unit (type OMD_) is available in four versions for different purposes.

Figure 2.1 OTM_ automatic transfer switch

1 Change-over switch2 Automatic control unit (four types; OMD100, OMD200, OMD300, OMD800)3 Motor operator (type OME_)4 Switch panel, the operating mechanism5 Handle for manual operation 6 Motor/Manual selection 7 Terminals for motor operator voltage supply 8 Terminals (X2) for locking state information, optional; see control circuit diagrams, pages 46-539 Fuse (F1) of motor operator 10 Locking latch for releasing the handle and locking electrical control11 Locking clip for locking manual operation12 Voltage sensing wires13 Place for auxiliary contact blocks

2. Product overview


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Figure 2.2 Automatic control units OMD_

OMD100: Analysing the voltage, frequency and the phase balance.

OMD100 is the basic version of the control unit of automatic switching equipment. It has two sensors to monitor two three-phase power lines, both able to work with single phase, too. OMD100 has the capability to monitor two power supply lines and to manage a single change-over switch. The neutral line always has to be connected.

OMD200:Analysing the voltage, frequency and the phase balance. Includes the generator START / STOP command.

OMD200 has two sensors to monitor two three-phase power lines, both able to work with single phase, too. It has the capability to monitor two power supply lines and to manage a single change-over switch. With DIP-switches it can be chosen whether or not the neutral line is connected. If OMD200 is used without the neutral line, the external transformer must be used.

OMD300:Analysing the voltage, frequency and the phase balance. Includes the generator START / STOP command and the dual power supply (DPS) to motor operator.

OMD300 has two sensors to monitor two three-phase power lines, both able to work with single phase, too. It has the capability to monitor two power supply lines and to manage a single change-over switch. OMD300 has integrated voltage supply for the motor operator (Dual power source, DPS). The neutral line always has to be connected. Moreover, the OMD300 has an additional power supply control.

OMD800:Analysing the voltage, frequency and the phase balance. Includes the generator START / STOP command.

Communication via Modbus.

DI/DO.

The OMD800 has two sensors to monitor two power lines; both sensors are able to work with single phase or three-phase lines. This unit can be supplied with an external auxiliary power supply. The status of OMD800 can be monitored through the Modbus RTU connection. The OMD800 has a graphic display where the user is able to check the settings and get all the information about status of the OMD800.

2. Product overview

2.1 Functions of automatic control units OMD_

91SCC303003M0204, rev. D


3. Description 3.1 Switching sequenceIn standard conditions, the automatic control unit OMD_ monitors the Line 1 (LN1), analyzing the voltage and the frequency. If a measured value is out of the set threshold and the Line 2 (LN2) is OK, the OMD_ operates the change-over switch (Switch I) fi rst to the position O. After the set dead band delay, the change-over switch (Switch II) is operated to the position II. In the same way, OMD_ will operate the back-switching sequence, when the Line 1 will start the normal functioning.

3. Description

Figure 3.1 Automatic Switching Sequences in OMD800

The switching sequence can be summarized in the following steps:

An anomaly occurs on the Line 1 Switching delay Change-over switch (Switch I) to the position O Dead band I to II delay Change-over switch (Switch II) to the position II

The back-switching sequence can be summarized in the following steps:

The Line 1 will start the normal functioning Back-switching delay Change-over switch (Switch II) to the position O Dead band II to I delay Change-over switch (Switch I) to the position I

Close Switch I Close the switch I on LN1 (max. operating duration 3 s)

Switch I status The switch I in position I -status

Close Switch II Close the switch II on LN2 (max. operating duration 3 s)

Switch II status The switch II in position II -status

Ts Switching delay (0...60 s, 0 s default)

DB I to II Dead band I to II (0...60 s, 0 s default)

TBs Back switching delay (0...59 s, 1...30 min, 0 s default)

DB II to I Dead band II to I (0...60 s, 0 s default)

Gs Generator stop delay (0...59 s, 1...30 min, 0 s default)


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4. Quick startThis is a quick guide only meant for those who need a reminder of how to operate the unit. For more detailed instructions, see chapter 7.

4.1 Operating the switch electricallyTo operate the switch electrically:

1. Remove the handle from the switch panel. You can remove the handle in any position.2. Turn the Motor/Manual selector to the Motor (M) position to enable electrical operate.

After that operation you can operate the switch electrically by two ways; the automatic control unit OMD_ is in Manual Mode or Automatic Mode.

Figure 4.1 Operating the switch electrically

4.1.1 Operating the switch electrically / Manual ModeSelecting the automatic operate unit OMD_ to the Manual Mode:

a. Make sure that power LED is ON, see the Figure 4.2/ .b. If Auto LED is OFF / , the automatic control unit is in Manual Mode.c. If the Auto LED is ON, push the Auto key once / . The Auto LED switches to OFF and the automatic control unit OMD_ is in Manual Mode / .

Figure 4.2 Selecting the automatic control unit OMD_ to Manual Mode

4. Quick start

11

1SCC303003M0204, rev. D


To select the switch to operate by the automatic control unit OMD_ in Manual Mode:

a. Push the appropriate I, O or II key b. When pushing the I-key (see the Figure 4.3/ or Figure 4.4/ ), the I-switch (lower) will be in the ON position (the status and the line indication, see the Figure 4.3/ or the Figure 4.4/ ) and the II-switch (upper) will be in the OFF position. If the I-switch is already in the ON position, pushing the I-key does not have any effect. c. When pushing the O-key, the I-switch will be in the OFF position. The II-switch remains in the OFF position.d. When pushing the II-key, the II-switch will be in the ON-position and the I-switch will be in the OFF position.e. If you push the I-key while the II-switch is in the ON position, fi rst the II-switch opens (OFF position) and then the I-switch closes its contacts (ON position).

Figure 4.4 Selecting the switch to operate, the switch status and the chosen line indication in display terminal in OMD800

4. Quick start

Figure 4.3 Selecting the switch to operate, the switch status and the chosen line indication with LEDs in OMD100, OMD200 or OMD300


1SCC303003M0204, rev. D

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4.1.2 Operating the switch electrically / Automatic ModeSelecting the automatic control unit OMD_ to the Automatic Mode:

a. Make sure that power LED is ON, see the Figure 4.5/ . b. Push the Auto key once / .c. If Auto LED is ON, the automatic control unit is in Automatic Mode / .d. If the Auto LED is OFF, push the Auto key again / , the Auto LED switches to ON / and the automatic control unit is in Automatic Mode.

Figure 4.5 Selecting the automatic control unit OMD_ to Automatic Mode

See the OMD_ Automatic Mode operation in Sections 9-13.

4.1.3 Selection of delay time, voltage threshold and TEST functionThe delay time and the voltage threshold are set by the rotary switches in automatic control units OMD100, OMD200 and OMD300. For the settings in OMD800, see Section 11.2.3.4 Device confi guration, page 81.

Figure 4.6 Selection of delay time and voltage threshold in OMD100

4. Quick start

13

1SCC303003M0204, rev. D


Figure 4.7 Selection of delay time and voltage threshold in OMD200 and OMD300

Ts = Delay time for automatic switchingThe delay time is the time before activating the switching sequence and the back-switching sequence. Available selections for the delay time are: 0, 5, 10, 15, 20, 25, 30 s.

Lim = Voltage threshold with TEST function The available selections for voltage threshold in OMD100 are: 5, 10, 15, 20 %. In OMD200 and OMD300 the available selections for voltage threshold are: 5, 10, 15, 20, 25, 30 %, see the available settings / voltage in Figure 4.7. By setting the voltage threshold, the unbalance is also set to the same level.

When the Lim rotary switch is set to the TEST position, the automatic control unit (OMD100, OMD200 or OMD300) enters the test sequence. In test sequence it is possible to simulate switching and back-switching sequences step by step by pushing the AUTO key.

4.1.4 Locking electrical operationTo disable electrical control, lock the locking latch with a padlock. After the locking latch has been locked, the switch cannot be operated electrically. You can lock electrical operation in any position (I, O, II).

Figure 4.8 Locking electrical control

4. Quick start


1SCC303003M0204, rev. D

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4.2 Operating the switch manually (local operation)To operate the switch manually:

1. Turn the Motor/Manual selector to the Manual (Man) position to enable manual operation and to prevent electrical operation. 2. Attach the handle to the switch panel. You can attach the handle in any position.

Figure 4.9 Operating the switch manually

When the handle is attached, the automatic control unit OMD_ will automatically be in Manual Mode. The Alarm LED on the automatic control unit is ON with the Power LED. The Auto LED will be OFF.

When the handle is removed, the automatic control unit will stay in Manual Mode and the Alarm LED will be OFF.

Figure 4.10 The Alarm LED is ON while the handle is attached and the automatic control unit is in Manual Mode

4. Quick start

15

1SCC303003M0204, rev. D


To disable the manual (and at the same time also electrical) operation, turn the handle to the position O and attach the padlock to the handle.

Figure 4.11 Locking the manual operation

The following chart shows the locking state information. Optional; see X2 in the control circuit diagrams, pages 46-53.

Figure 4.12 Locking state information, optional

4. Quick start


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5. Installation5.1 Mounting the OTM_ automatic transfer switch

Figure 5.1 An example of using protection against direct contact

5. Installation

Use protection against direct contact.

17

1SCC303003M0204, rev. D


Figure 5.2 Automatic transfer switches, drilling hole distances / screw-mounting, [mm/in]

5. Installation


1SCC303003M0204, rev. D

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5.2 Dimensional drawings

5. Installation

Figure 5.3 OTM160-250E_C_1D_

Figure 5.4 OTM160-250E_C_2D_, OTM160-250E_C_3D_

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1SCC303003M0204, rev. D

Installation and operating instructions, OTM_C_D_5. Installation


Figure 5.6 OTM160-250E_WC_1D_


1SCC303003M0204, rev. D

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5. Installation

Figure 5.7 OTM160-250E_CW_2D_, OTM160-250E_CW_3D_

Figure 5.8 OTM160-250E_CW_8D_

21

1SCC303003M0204, rev. D


Figure 5.9 OTM200U_C_1D_

Figure 5.10 OTM200U_C_2D_, OTM200U_C_3D_


1SCC303003M0204, rev. D

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5. Installation



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1SCC303003M0204, rev. D





1SCC303003M0204, rev. D

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5. Installation

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1SCC303003M0204, rev. D




5. Installation


1SCC303003M0204, rev. D

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5. Installation

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1SCC303003M0204, rev. D




5. Installation


1SCC303003M0204, rev. D

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5. Installation

Figure 5.24 OTM1000-1250E_C1D_

170240

260

206

50

75136

15

74,5295

OTM1000-1250E_C1D

AA1A2B

E280230396426

E380230476506

E480230556586

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Man.

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112

96

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A2B

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M00

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317

29

1SCC303003M0204, rev. D


Figure 5.25 OTM1000-1250E_C2D_, OTM1000-1250E_C3D_

Figure 5.26 OTM1000-1250E_C_8D_

260

206

50

75 136

15

74,5295

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Man.

171253 A

A2B

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A1

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E480230556586

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317

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B

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256

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387

317

5. Installation


1SCC303003M0204, rev. D

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Figure 5.27 OTM800-1200U_C1D_

Figure 5.28 OTM800-1200U_C2D_, OTM800-1200U_C3D_

M

Man.

A2

253 / 9,97 A

B

632,48

13,5 / 0,53 50 / 1,97

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OTM800-1200U_C_D

AA1A2B

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E380/3,15230/9,06476/18,75506/19,94

E480/3,15230/9,06556/21,9586/23,09

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Man.

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E480/3,15230/9,06556/21,9586/23,09

A1

38715,25

31712,49

mmin

5. Installation

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1SCC303003M0204, rev. D


Figure 5.29 OTM800-1200U_C8D_

Figure 5.30 OTM1600E_C1D

M

Man.

253 / 9,97 A

B

632,48

13,5 / 0,53 50 / 1,97

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E380/3,15230/9,06476/18,75506/19,94

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19

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96

112

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1SCC303003M0204, rev. D

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Figure 5.31 OTM1600E_C2D_, OTM1600E_C3D_

Figure 5.32 OTM1600E_C8D_

400

19

15 75295

206

74,5136

260

240170

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Man.

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13,5 50

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OTM1600E_C_D

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317

5. Installation

33

1SCC303003M0204, rev. D


5.3 Parameter settings by DIP switches in the automatic control units OMD100, OMD200 and OMD300

The parameter settings of automatic control units OMD100, OMD200 and OMD300 are performed by the DIP switches. To set the DIP switches, the OMD_ unit has to be removed from the switch, as per Figure 5.33. On the bottom of the OMD_ unit are the DIP switches; see Figure 5.34. After setting the DIP switches you can place the OMD_ unit back on the switch according to Figure 5.37, see page 37.

5. Installation

Figure 5.33 Removing of the OMD_ from the switch

Figure 5.34 Places of the DIP switches

Only an authorised electrician may perform the electrical installation and maintenance of OTM_ automatic transfer switches. Do not attempt any installation or maintenance actions when an OTM_ automatic transfer switch is connected to the electrical mains. Before starting work, make sure that the switch is de-energised.


1SCC303003M0204, rev. D

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The DIP switches of the automatic control units OMD100, OMD200 and OMD300 are set according the lists below. The parameter settings of automatic control unit OMD800 are on the Chapter 11 Using automatic control unit OMD800, page 76.

5.3.1 Parameter settings OMD100Automatic control unit OMD100 has a total of three (3) adjustable parameters. The parameter settings are performed by the DIP switches and by the rotary switches.

Ph Number of phases, setting by DIP switch S23-1

TS Switching delay, setting by Ts rotary switch, see page 68

THR Voltage threshold, setting by Lim rotary switch, see page 68

5.3.1.1 Parameter settings by DIP switches S23DIP switch S23-2 is not in use.

S23

Figure 5.35 DIP switches in OMD100, the positions are factory default settings

5. Installation

If single phase is used, the neutral should be connected.

DIP switch S23-1 to set phase system

S23-1 Position Phase system

OFF three-phase (default)

ON single phase

5.3.2 Parameter settings OMD200 and OMD300Automatic control units OMD200 and OMD300 have total of seven (7) adjustable parameters. The parameter settings are performed by the DIP switches and by the rotary switches.

Un Rated voltage, setting by DIP switches S23-1...3

fn Rated frequency, setting by DIP switch S23-4

N Neutral in use, setting by DIP switch S24-1

Ph Number of phases, setting by DIP switch S24-2

35

1SCC303003M0204, rev. D


DIP-switch S23-4 to set rated frequency of the monitored lines

S23-4 Position Rated frequency fn

OFF 50Hz (default)

ON 60Hz

5.3.2.1.1 DIP switches S23 DIP switches S23-1...3 to set the rated voltage of monitored lines

S23-1...3 Positions Main/phase voltage (Un) Positions Main/phase voltage (Un)

OFF, OFF, OFF Un = 480/277 V

ON, OFF, OFF Un = 440/260 V

OFF, ON, OFF Un = 415/240 V

ON, ON, OFF Un = 400/230 V (default)

OFF, OFF, ON Un = 380/220 V

ON, OFF, ON Un = 230/130 V

OFF, ON, ON Un = 220/127 V

ON, ON, ON Un = 208/120 V

5.3.2.1 Parameter settings by DIP switches S23 S24

Figure 5.36 DIP switches in OMD200 and OMD300, the positions are factory default settings

Gen Generator in use, setting by DIP switch S24-3

Gs Generator stop delay, setting by DIP switch S24-4

Ts Switching delay, setting by Ts rotary switch, see page 72

THR Voltage threshold, setting by Lim rotary switch, see page 72

5. Installation


1SCC303003M0204, rev. D

36

5.3.2.1.2 DIP switches S24DIP-switch S24-1 to set neutral

S24-1 Position Neutral N

OFF N used (default)

ON N not in use

DIP- switch S24-2 to set phase system

S24-2 Position Phase system

OFF three-phase (default)

ON single phase

DIP-switch S24-3 to set the gen use

S24-3 Position Generator

OFF not in use (default)

ON in use

DIP-switch S24-4 to set the generator stop delay Gs

S24-4 Position Generator

OFF Gs = Switching delay Ts (default)

ON Gs = 5 minutes

5. Installation

NOTE: see page 72 Delay time (Ts)

37

1SCC303003M0204, rev. D


Figure 5.37 Adjusting the mounting depth of the automatic control unit OMD_

5. Installation

5.4 Mounting the automatic control unit OMD_The automatic control unit OMD_ can be mounted on the switch, the door or the DIN-rail.

5.4.1 Automatic control unit OMD_ on the switchThe automatic control unit OMD_ can be adjusted according to the mounting depth of the panel, see Figure 5.37.


1SCC303003M0204, rev. D

38

Door drilling according to Figure 5.38. As an optional extra you can use the cover plate OMZC_ on the door, see Accessories, page 100.

Figure 5.38 Door drilling for the automatic control unit OMD_ on the switch, door drilling for the cover plate OMZC_, see Accessories, Figure 14.9, page 100.

5. Installation

39

1SCC303003M0204, rev. D


5.4.2 Automatic control unit OMD_ , door mountingThe automatic control unit OMD_ can be mounted on the door with the fastener OMZD1, see Accessories, page 99. Door drilling according to Figure 5.39. As an optional extra you can use the cover plate OMZC_ on the door, see Figure 5.40 on next page and Accessories, page 100.

5. Installation

Figure 5.39 Automatic control unit OMD_, door mounting


1SCC303003M0204, rev. D

40

Figure 5.40 Automatic control unit OMD_, door mounting with the cover plate, door drilling for the cover plate OMZC_, see Accessories, Figure 14.10, page 100

5.5.3 Automatic control unit OMD_ , DIN-rail mountingThe automatic control unit OMD_ can be mounted on the 35 mm DIN-rail, see the Figure 5.41. Door drilling, if needed, according to Figure 5.38, page 38. As an optional extra you can use the cover plate OMZC_ on the door, see Figure 5.38 and Accessories, page 100.

Figure 5.41 Automatic control unit OMD_, DIN-rail mounting

5. Installation

41

1SCC303003M0204, rev. D


6. Connecting

6.1 Power circuit

Figure 6.1 The neutral pole is situated on the right side of the switches. The lower switch is number I and the upper switch is number II

6. Connecting

Only an authorised electrician may perform the electrical installation and maintenance of OTM_ automatic transfer switches. Do not attempt any installation or maintenance actions when an OTM_ automatic transfer switch is connected to the electrical mains. Before starting work, make sure that the switch is de-energised.


1SCC303003M0204, rev. D

42

6.1.1 Power circuit of the automatic control unit OMD100Operating voltage:Main voltage: 380Vac (20%)Phase voltage: 220Vac (20%)Frequency: 50Hz (10%)Neutral must always be connected.Phase setting with DIP switches: Single phase or Three-phase (default).

6.1.2 Power circuit of the automatic control unit OMD200 and OMD300Operating voltage, setting with DIP switchesMain voltage: 208Vac - 480Vac (20%)Phase voltage: 120Vac - 277Vac (20%)Frequency: 50Hz - 60Hz (10%)Phase setting with DIP switches: Single phase or Three-phase (default).

OMD200:If the automatic control unit OMD200 is used without neutral (three-phase connection), the external transformer must be used. The transformer will drop the main voltage to the phase voltage level. Neutral has to be connected when using a single phase connection.

OMD300:Neutral must always be connected.

6.1.3 Power circuit of the automatic control unit OMD800:Operating and measuring voltage area on 3 phase system:Main voltage: 100Vac - 480Vac (20%)Phase voltage: 57.7Vac - 277Vac (20%)AUX voltage: 24Vdc - 110Vdc (-10 to +15%)Frequency: 50Hz - 60Hz (10%)

Operating and measuring voltage area on 1 phase system:Phase voltage: 57,7Vac - 240Vac (20%)AUX voltage: 24Vdc - 110Vdc (-10 to +15%)Frequency: 50Hz - 60Hz (10%)Phase setting, see the Chapter 11.If the main voltage level is between 57,7Vac - 109Vac, the auxiliary power supply (AUX) must be used.

6. Connecting

43

1SCC303003M0204, rev. D


6.2 Control circuit

6. Connecting

Figure 6.2 OTM_ automatic transfer switch terminals

1. Terminals for motor operator voltage supply, MCB (F2) maximum size 16A.2. Terminals (X2) for state information of locking, optional; see the control circuit diagrams.

When relay outputs are used with inductive loads (such as relays, contactors and motors), they must be protected from voltage peaks using varistors, RC-protectors (AC current) or DC current diodes (DC current).


1SCC303003M0204, rev. D

44

Figure 6.3 Control circuit connections in OMD_

6. Connecting

45

1SCC303003M0204, rev. D


Figure 6.4 OTM_ automatic transfer switch with control circuit connections

6. Connecting


1SCC303003M0204, rev. D

46

KA

0032

0

6.2.1 Control circuit of the automatic control unit OMD100

6. Connecting

Figure 6.5 Control circuit diagram OMD100

47

1SCC303003M0204, rev. D


Connectors, OMD100

Table 6.1 Connectors OMD 100

6. Connecting

Figure 6.6 Connectors, OMD100

Connector Description

X11:1X11:2X11:3X11:4

Supply I: L1Supply I: L2Supply I: L3Supply I: N

X12:1X12:2X12:3X12:4

Supply II: L1Supply II: L2Supply II: L3Supply II: N

X21:1X21:2X21:3X21:4

Voltage supply from motor operator OME_ CommonOutput to close switch I or open switch II NOOutput to close switch II or open switch I NOVoltage supply from motor operator OME_ Common

X24:1X24:2X24:3

Alarm inactive, close if product is poweredCommonAlarm active, open if product is powered

X31:1X31:2X31:3X31:4

Manual / Alarm input from handlePosition of change-over switch IPosition of change-over switch IIVoltage supply from the automatic control unit OMD_

X61 Equipment earth


1SCC303003M0204, rev. D

48

KA

0032

1


6. Connecting


49

1SCC303003M0204, rev. D


Connector Description

X11:1X11:2X11:3X11:4


X13:1X13:2

Supply I (power supply): L1 (default)Supply I (power supply): N

X12:1X12:2X12:3X12:4


X14:1X14:2

Supply II (power supply): L1 (default)Supply II (power supply): N

X21:1X21:2X21:3

Voltage supply from motor operator OME_ CommonOutput to close switch I or open switch II NOOutput to close switch II or open switch I NO

X23:1X23:2X23:3

Output to control the start of the generator, NOCommonOutput to control the stop of the generator, NC

X24:1X24:2X24:3


X31:1X31:2X31:3X31:4

Manual / Alarm input from handlePosition of change-over switch IPosition of change-over switch IIVoltage supply from the automatic control unit OMD_

X61 Equipment earth

Connectors, OMD200

Table 6.2 Connectors OMD200

6. Connecting



1SCC303003M0204, rev. D

50

KA

0032

2


6. Connecting


51

1SCC303003M0204, rev. D


Con-nector

Description

X11:1X11:2X11:3X11:4


X13:1X13:2

Supply I (power supply): L1 (default)Supply I (power supply): N

X12:1X12:2X12:3X12:4


X14:1X14:2

Supply II (power supply): L1 (default)Supply II (power supply): N

X21:1

X21:2X21:3

Voltage supply from motor operator OME_ CommonOutput to close switch I or open switch II NOOutput to close switch II or open switch I NO

X23:1X23:2X23:3

Output to control the start of the generator, NOCommonOutput to control the stop of the generator, NC

Connectors, OMD300


6. Connecting


Con-nector

Description

X24:1X24:2X24:3


X31:1X31:2X31:3X31:4

Manual / Alarm input from handlePosition of change-over switch IPosition of change-over switch IIVoltage supply from automatic control unit

X26:1X26:2

Supply I: L1Supply I: N

X27:1X27:2

Motor: L Motor: N

X28:1X28:2

Supply II: L1Supply II: N

X61 Equipment earth


1SCC303003M0204, rev. D

52



6. Connecting

53

1SCC303003M0204, rev. D


Con-nector

Description

X11:1X11:2X11:3X11:4


X12:1X12:2X12:3X12:4


X41:1X41:2

AUX +AUX -

X21:1 Voltage supply from motor operator OME_ Common

X21:2 Output to close switch I or open switch II NOX21:3 Output to close switch II or open switch I NOX23:1 Output to control the start of the generator, NOX23:2 CommonX23:3 Output to control the stop of the generator, NCX24:1 Command disconnection secondary loads, NOX24:2 CommonX24:3 Command disconnection secondary loads, NC

Connectors, OMD800

6. Connecting



Con-nector

Description

X29:1X29.2X29:3X29:4X29.5X29:6X29:7

Signalling emergency / alarm, NOReservedReservedSignalling device alarm, NOSignalling OMD_ manual mode, NOReservedCommon

X31:1X31:2X31:3X31:4

Manual / Alarm input from handlePosition of change-over switch IPosition of change-over switch IIVoltage supply from the automatic control unit

X32:1X32.2X32:3X32:4X32.5X32:6X32:7X32:8X32.9

Bus-tie statusCommand to start-up to generatorCommand to force commutationGenerator alarm inputReservedReservedReservedReservedSupply

X51:1X51:2X52:3

Modbus DATA BModbus DATA AModbus GND

X61 Equipment earth


1SCC303003M0204, rev. D

54

6.2.5 OMD_ outputs6.2.5.1 Opening/closing command to change-over switches, X21 (DO1...DO2)The output relays command the change-over switches to open and close its releases.

The OMD_ device has been integrated with the automation logic to guarantee the highest-level safety for commanding the change-over switches.

To do that, the automation logic monitors the correct operation of the change-over switch after a command has been sent. If the feedback of the Switch status is not received within 5 seconds of the sending of the command, the device considers it as a failed command and operates as follows:

An alarm is generated: DO6 and DO9 activate. Alarm LED switches on. Alarm is set off by pushing the AUTO key. After that the device is always in the Manual Mode to

prevent unwanted operation of the change-over switch.

Exactly the same operations are performed for the protection device on the secondary line (LN2-Switch II) during the back-switching sequence.

6.2.5.2 Gen-Set start/stop, X23 (DO5)Gen-Set start and stop is handled by a bistable relay. When the relay is active on DO5 Start X23:1, the generator is started. When the relay is active on DO5 stop X23:3, the generator is stopped.

6.2.5.3 Alarm signaling OMD100, OMD200 and OMD300: X24 (DO6)

OMD800: X29:1 (DO6)

This contact is closed when the automatic transfer switch logic is active. If the contact is closed, it means the logic is disabled and an alarm is generated.

6.2.5.4 Device alarm signaling, X29:4 (DO9)This contact is closed when opening or closing of the switch fails.

6.2.5.5 Auto/Manual signaling, X29:5 (DO10)This contact is closed when the operating mode is Manual.

6.2.5.6 Disconnection secondary loads, OMD800/X24 (DO11)See section 11, page 76.

6.2.6 OMD_ inputs 6.2.6.1 Switch status input, X31:2 (DI1) X31:3 (DI2)Two inputs are connected to primary (LN1-Switch I) and secondary (LN2-Switch II) change-over switches auxiliary contacts (Switch open = open contact).

6.2.6.2 Force manual, X31:1 (DI3)When this input is closed, the handle is attached and OMD_ is forced to Manual Mode.

To set the OMD_ in the Automatic Mode the AUTO key must be pushed (Auto LED is ON).

6.2.6.3 Gen-Set alarm, X32:4 (DI8)A Gen-Set alarm prevents switching to the secondary line (LN2 Switch II). If the alarm occurs when the device is using secondary line and generator is running, device keeps the load on secondary line and the control logic is locked. The automatic operation and electrical operation are prevented as long as the alarm is active.

This input can be used to wire several alarms coming from the Gen-Set in parallel: oil pressure loss, over temperature etc.

6. Connecting

55

1SCC303003M0204, rev. D


An alarm is signaled by the Alarm LED on the front of the device and the relative electrical contact is closed.

NOTE: In the case of Gen-Set alarm the switch can be operated to position O by pressing O key.

NOTE: The generator can be stopped by using normal generator stop command. See page 86: Generator Control

6.2.6.4 Forced switching to the LN2-Switch II supply line, X32:3 (DI9)Some short-period industrial processes require power supplied from a Gen-Set (secondary line) rather than primary (LN1-Switch I) line power, to avoid any possible supply anomalies and to guarantee a higher level of reliability.

Forced switching to the secondary (LN2-Switch II) line can be easily carried out keeping this input closed (only in the Automatic Mode).

This operation starts the complete transfer to the secondary line switching procedure:

Gen-Set start Primary line (LN1-Switch I) change-over switch opening Secondary line (LN2-Switch II) change-over switch closing

The power supply from the secondary line remains as long as this command is active. When the command is disarmed, the reverse transfer to the primary supply line switching procedure is started.

Generator is stopped as in normal back-switching procedure.

6.2.6.5 The command to startup the generator, X32:2 (DI10)When this input is activated the generator is started. The generator will not stop when this input is inactivated. It has to be done by using normal generator stop command. See page 86: Generator Control.

6.2.6.6 Voltage sensors inputVoltage sensors are the same on the primary (LN1-Switch I) and secondary (LN2-Switch II) lines.The net sensor is able to detect the following anomalies:

Undervoltage and overvoltage Phase loss Voltage unbalance Invalid frequency

The net sensor monitors the primary supply line in order to start the switching procedure from the primary to the secondary line in the case of network anomalies. Equally, the net sensor enables the reverse switching procedure when the primary supply line returns.

6.2.6.7 Measurements Voltage: 1 % Frequency: 1 %

6. Connecting


1SCC303003M0204, rev. D

56

7. Operating

Figure 7.1 Releasing the handle

7. Operating

7.1 Electrical operationYou can operate the OTM_ automatic transfer switch electrically by using the keypad of the automatic control unit OMD_ in Manual Mode or automatically in Auto Mode.

To operate the switch electrically:

1. Release the handle from the switch panel by pushing down the locking latch under the switch panel and pulling the handle off, see Figure 7.1.

Never open any covers on the product. There may be dangerous external control voltages inside the OTM_ automatic transfer switch even if the voltage is turned off.

Exercise suffi cient caution when handling the unit.

Never handle control cables when the voltage of the OTM_ automatic transfer switch or external control circuits are connected.

Electrical control is disabled if the handle is attached to the switch panel.

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1SCC303003M0204, rev. D


2. Turn the Motor/Manual selection switch to the Motor (M) position, see Figure 7.2.

Figure 7.2 Motor/Manual selection switch in the Motor (M) position

3. Operate the OTM_ automatic transfer switch with the keypad of the automatic control unit OMD_ in Manual Mode or automatically in Auto Mode.

In automatic mode OMD200 and OMD300 are always operated from position I to position II (or from II to I) without stopping it in position O. OMD800 can be stopped in position O by setting delay time on Dead Band I to II. For details, see pages 82-83. For example, if switch I is closed and you push key II, the automatic control unit OMD_ fi rst runs switch I in the open position and then the control unit runs switch II from the open to the closed position.

7. Operating

The motor operator is protected from overloading by a fuse (F1) under the motor operator. Only use the same type of fuse that is described on the label close to the fuse.


1SCC303003M0204, rev. D

58

7.1.1 Operating the switch electrically / Manual ModeSelecting the automatic control unit OMD_ to the Manual Mode:

a. Make sure that the power LED is ON, see the Figure 7.3/ .b. If the Auto LED is OFF / , the automatic control unit is in Manual Mode.c. If the Auto LED is ON, push the Auto key once / . The Auto LED switches to OFF and the automatic control unit OMD_ is in Manual Mode / .

Figure 7.3 Selecting the automatic control unit OMD_ to Manual Mode

To select the switch to operate by the automatic control unit OMD_ in Manual Mode:

a. Push the appropriate I, O or II key. b. When pushing the I-key (see the Figure 7.4/ or Figure 7.5/ ), the I-switch (lower) will be in the ON position (the status and the line indication, see the Figure 7.4/ or the Figure 7.5/ ) and the II-switch (upper) will be in the OFF position. If the I-switch is already in the ON position, pushing the I-key does not have any infl uence. c. When pushing the O-key, the I-switch will be in the OFF position. The II-switch remains in the OFF position.d. When pushing the II-key, the II-switch will be in the ON position and the I-switch will be in the OFF position.e. If you push the I-key while the II-switch is in the ON position, fi rst the II-switch opens (OFF position) and then the I-switch closes its contacts (ON position).

7. Operating

When the automatic control unit is in Manual Mode, the generator cant be operated.

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1SCC303003M0204, rev. D

Installation and operating instructions, OTM_C_D_7. Operating

Figure 7.5 Selecting the switch to operate, the switch status and the chosen line indication in display terminal in OMD800

Figure 7.4 Selecting the switch to operate, the switch status and the chosen line indication with LEDs in OMD100, OMD200 or OMD300


1SCC303003M0204, rev. D

60

7. Operating

If a new command is given before the switch has reached the position of the previous command, the fuse (F1) may operate.

Figure 7.7 Selecting the automatic control unit OMD_ to Automatic Mode

See the OMD_ Automatic Mode operation in Sections 9-13.

Figure 7.6 Manual Mode control

Pushing of the O-key (= O-command) will override the commands of the other keys. For example, if you simultaneously give an O-command and another command (I or II), the automatic transfer switch OTM_ is driven to the OFF position.

7.1.2 Operating the switch electrically / Automatic ModeSelecting the automatic control unit OMD_ to the Automatic Mode:

a. Make sure that power LED is ON, see the Figure 7.7/ . b. Push the Auto key once / .c. If Auto LED is ON, the automatic control unit is in Automatic Mode / .d. If the Auto LED is OFF, push the Auto key again / , the Auto LED switches to ON / and the automatic control unit is in Automatic Mode.

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1SCC303003M0204, rev. D


7.1.3 Selection of delay time, voltage threshold and TEST functionThe delay time and the voltage threshold are set by the rotary switches in automatic control units OMD100, OMD200 and OMD300. The settings in OMD800, see the Section 11.

Ts = Delay time for automatic switchingThe delay time is the time before activating the switching sequence and the back-switching sequence. Available selections for the delay time are: 0, 5, 10, 15, 20, 25, 30 s.

Lim = Voltage threshold with TEST function The available selections for voltage threshold in OMD100 are: 5, 10, 15, 20 %. In OMD200 and OMD300 the available selections for voltage threshold are: 5, 10, 15, 20, 25, 30 %, see the available settings / voltage in the Figure 7.9. By setting the voltage threshold, the unbalance is also set to the same level.

When the device is in Manual mode and the Lim rotary switch is set to the TEST position, the automatic control unit (OMD100, OMD200 or OMD300) enters the test sequence. In test sequence it is possible to simulate switching and back-switching sequences step by step by pushing the AUTO key. If device is in AUTO mode and the Lim rotary switch is set to the TEST position, nothing will happen. In this case the voltage threshold is always set to the maximum.

Figure 7.9 Selection of delay time and voltage threshold in OMD200 and OMD300

7. Operating

Figure 7.8 Selection of delay time and voltage threshold in OMD100


1SCC303003M0204, rev. D

62

Steps in the TEST sequence are:

1. Push AUTO; generator starts (skipped if the generator is not in use)2. Push AUTO; switch to II3. Push AUTO;switch to I4. Push AUTO; stop generator (skipped if the generator is not in use)

Pushing AUTO after that; sequence restarts. The user can stop the TEST sequence by turning the Lim rotary switch back to the voltage threshold wanted. After stopping the TEST sequence the device returns to the normal functionality in MANUAL mode and the settings are exactly the same as they were before starting the TEST sequence. By pushing AUTO key once after stopping test sequence the device is set to the AUTO mode.

Figure 7.11 Motor/Manual selection in the Man position

7. Operating

Figure 7.10 Lim rotary switch is set to the TEST function in OMD100 (left) and in OMD200 and OMD300 (right)

7.2 Manual operation using the handleYou can operate the switch manually by using the handle that is included in the delivery.

To control the switch manually:

1. Turn the Motor/Manual selector to the Manual (Man) position, see Figure 7.11. The motor operator is switched off and electrical control is prevented.

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1SCC303003M0204, rev. D


Figure 7.12 Attaching the handle

3. Operate the OTM_ automatic transfer switch by turning the handle to the required position (I, O, II).

When the handle is attached, the automatic control unit OMD_ will automatically be in Manual Mode. The Alarm LED on the automatic control unit will light with the Power LED. The Auto LED will be OFF, see Figure 7.13. When the handle is removed, the automatic control unit will stay in Manual Mode and the Alarm LED will be OFF.

Figure 7.13 Alarm LED is ON while the handle is attached and the automatic control unit will automatically be in Manual Mode

7. Operating

Electrical control is prevented when the handle is attached to the switch panel.

When the automatic control unit is in Manual Mode, the generator cant be operated.

2. Attach the handle by pressing it to the switch panel until it clicks into place. You can attach the handle in all positions; see Figure 7.12.


1SCC303003M0204, rev. D

64

7.3 LockingYou can lock the OTM_ automatic transfer switch to a specifi c position.

7.3.1 Locking the electrical operationTo disable electrical operation, lock the locking latch with a padlock. After the locking latch has been locked, the switch cannot be operated electrically. You can lock the electrical operation to any position (I, O, II).

To lock electrical operation:

1. Pull up the locking latch under the switch panel. 2. Place the padlock under the latch, see Figure 7.14.

Figure 7.14 Locking the electrical operation

7. Operating

You cannot attach the handle when electrical control is locked.

7.3.2 Locking the manual operationBy default, manual operation can only be locked to position O. Locking to positions I and II is optional and possible only with modifi cations to the switch panel.

To lock manual operation:

1. Turn the handle to the required position. 2. Pull out the clip from the handle and place the padlock on the handle; see Figure 7.15.

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1SCC303003M0204, rev. D


Figure 7.16 Locking state information

7. Operating

The following chart shows the locking state information (the voltage on motor operator supply needed). Optional; see X2 in the control circuit diagrams, pages 46-53.

The handle cannot be removed when padlocked to position O.

Figure 7.15 Locking the manual operation


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66

8. Technical data8.1 Automatic transfer switch OTM_C_D, power circuits

8. Technical data

Table 8.1 General technical data of automatic transfer switches

Automatic transfer switch, power circuit Value

OTM_C1D_ (OMD 100)

Rated operational voltage Ue 380 Vac 20% + N

Phase - neutral 220 Vac 20%

Rated frequency 50 Hz 10%

Rated impulse withstand voltage Uimp 4 kV

OTM_C2D_/OTM_C3D_ (OMD 200/300)

Rated operational voltage Ue 208 - 415 Vac 20% + N

Phase - neutral 120 - 240 Vac 20%

Rated frequency 50 60 Hz 10%


OTM_C8D_ (OMD 800)

Rated operational voltage Ue 100 - 415 Vac 20%

Phase - neutral 57,7 - 240 Vac 20%

Rated frequency 50 60 Hz 10%


1 phase system:

Rated operational voltage Ue Phase - neutral 57,7 - 240 Vac 20%

AUX voltage, if voltage 57,7 - 109 Vac 24 Vdc 110 Vdc (-10 to +15%)

Operating temperature, without derating -5... +40 C

Transportation and storage temperature -40... +70 C

Altitude Max. 2000 m

67

1SCC303003M0204, rev. D

Installation and operating instructions, OTM_C_D_8. Technical data

Table 8.3 Specifi ed technical data of automatic transfer switches

a) Under nominal conditionsb) Ts 0s (Min.) - Ts 30s (Max.)

Table 8.4 Terminals (X2) for state information of locking, optional

Table 8.2 General technical data of motor operators

8.2 Motor operator OME_, control circuits

Motor operator, control circuit Value Cabling

Rated operational voltage U [V] 220 - 240 Vac 50-60 Hz

Operating voltage range 0.8... 1.2 x U

Operating angle 90 0-I, I-0, 0-II, II-0; 180 I-0-II

Operating time See the Table 8.3

Protection degree IP 20, front panel

Voltage supply PE N L 1,5 -2,5 mm2

F2 Max. MCB 16 A

State information of locking X2 (no SELV): optional

Handle attached or motor operator locked 11-12-14 (C/O) 1,5 -2,5 mm2

Locking motor operator 23-24 (NO) 1,5 -2,5 mm2


Operating temperature -25... +55 C

Transportation and storage temperature -40... +70 C

Altitude Max. 2000 m

Type VoltageU

220-240 VAC[V]

Nominal current a)

In

[A]

Current Inrush a)

[A]

Operating transfer time a)

I-II, II-I[s]

Total transfer time a) b)

I-II, II-I[s]

OFF-time when

operating a)

I-II or II-I[s]

OTM160...250_C_1D220C 220 Vac 0,2 1,3 2,5 5,0 2,5 35,0 0,4 1,0

OTM160...250_C_2/3D230C 230 Vac 0,2 1,3 2,0 4,0 2,0 35,0 0,4 1,0

OTM160...250_C_8D230C 230 Vac 0,2 1,3 1,5 3,0 1,5 35,0 0,4 1,0

OTM315...400_C_1D220C 220 Vac 0,5 2,1 2,0 5,0 2,0 35,0 0,4 1,0

OTM315...400_C_2/3D230C 230 Vac 0,5 2,1 2,0 5,0 2,0 35,0 0,4 1,0

OTM315...400_C_8D230C 230 Vac 0,5 2,1 1,5 3,0 1,5 35,0 0,4 1,0

OTM630...800_C_1D220C 220 Vac 0,7 2,8 2,0 5,0 2,0 35,0 0,4 1,0

OTM630...800_C_2/3D230C 230 Vac 0,7 2,8 2,0 5,0 2,0 35,0 0,4 1,0

OTM630...800_C_8D230C 230 Vac 0,7 2,8 1,5 3,0 1,5 35,0 0,4 1,0

OTM1000...1600_C_1D220C 220 Vac 1,8 7,7 3,0 6,0 3,0 36,0 0,6 1,5

OTM1000...1600_C_2/3D230C 230 Vac 1,8 7,7 3,0 6,0 3,0 36,0 0,6 1,5

OTM1000...1600_C_8D230C 230 Vac 1,8 7,7 2,5 4,0 2,5 35,0 0,6 1,5

Measurement Value

Handle attached or motor operator locked 11-12-14 (C/O): 5 A AC-1 / 250 V

Locking motor operator 23-24 (NO): 5 A AC-1 / 250 V

SCPD Max. MCB C2A


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9. Using automatic control unit OMD100

9. Using automatic control unit OMD100 9.1 Interface

Figure 9.1 Interface of OMD100

9.2 Confi guration9.2.1 Rotary Switches

Figure 9.2 Selection of delay time and voltage threshold, the factory settings are shown in the fi gure

Delay time (Ts)Delay time for the automatic switching is set by a rotary switch (Ts). Delay time is the time before activating the switching sequence and the back-switching sequence, when an anomaly has occurred.Available selections for delay time are: 0, 5, 10, 15, 20, 25, 30 s.

Voltage threshold (Lim) with TEST functionVoltage threshold is set by a rotary switch (Lim). Available selections for voltage threshold are: 5, 10, 15, 20 %. Setting the voltage threshold also sets the unbalance to the same level.

The TEST position enables simulation of switching sequences step-by-step, see chapter 9.3 TEST sequence, page 71.

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Installation and operating instructions, OTM_C_D_9. Using automatic control unit OMD100

9.2.2 Keypad

Figure 9.3 Keypad on OMD100

AUTO keySelecting the automatic control unit OMD100 to the manual or automatic mode. An active alarm can reset by the AUTO key.

O keySetting the automatic transfer switch OTM_C_D to the OFF position in manual and auto mode; both switches (I and II) are in the OFF position. After pressing the O-key the automatic control unit ODM is always in manual mode.

I keySetting in manual mode the automatic transfer switch OTM_C_D to position I, when the I-switch will be in the ON position and the II-switch will be in the OFF position.

II keySetting in manual mode the automatic transfer switch OTM_C_D to position II, when the II-switch will be in the ON position and the I-switch will be in the OFF position.


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9.2.3 LEDs

Line Status LED Indication

Voltage OK ON

No voltage OFF

Overvoltage Fast blinking (5 Hz)

Undervoltage Blinking (1 Hz, 50% ON / 50% OFF)

Invalid frequency Blinking (1 Hz, 90% ON / 10% OFF)

Unbalance Blinking (1Hz, 10% ON / 90% OFF)

Table 9.1 Line status indication

Switch in position I (I)A red I LED is ON, when the automatic transfer switch OTM_C_D is in the I position (the I-switch is ON and the II-switch is OFF), the LED is OFF otherwise. If transition from the O position to the I position fails, the I LED will blink.

Switch in position II (II)A red II LED is ON, when the automatic transfer switch OTM_C_D is in the II position (the II-switch is ON and the I-switch is OFF), the LED is OFF otherwise. If transition from the O position to the II position fails, the II LED will blink.

Figure 9.4 LEDs on OMD100

LN 1 - Switch IA red LN 1 LED signals the status of the line LN 1, when the switch I is ON. Line status is explained in the table below.

LN 2 - Switch IIA red LN 2 LED signals the status of the line LN 2, when the switch II is ON. Line status is explained in the table below.


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Alarm Status LED Indication

External alarm (logic locked) or handle is on ON

Switching logic alarm Blinking

No alarm OFF

Table 9.2 Alarm status indication

NOTE: When the handle is removed, the automatic control unit will stay in manual mode and the Alarm LED will be OFF.

AutoA green Auto LED signals the automatic or the manual mode. When the OMD100 is in automatic mode, the Auto LED is ON. When the device is in manual mode, the Auto LED is OFF. In test sequence the Auto LED is blinking.

PowerA green Power LED signals the power status. When power is ON, the Power LED is ON. The OMD100 will remain in a standby state at least one minute after power failure. A blinking Power LED indicates standby mode.

9.3 TEST sequence

Figure 9.5 Lim rotary switch is set to the TEST position

When the Lim rotary switch is set to the TEST position, automatic control unit OMD100 enters the test sequence. All the LEDs are fi rst blinking a couple of times to give the information that the LED is functioning.

In the TEST position it is possible to simulate switching and back-switching sequences step-by-step by pressing the AUTO key. The user can interrupt the simulation at any place and return to normal use of the device. More information, see page 62.

NOTE: In the TEST sequence the power circuit is switched on!

NOTE: After testing the user must ensure that the device is not left in the TEST position by accident.

AlarmA red Alarm LED signals an external alarm. Alarm status is explained in the table below. An active alarm is set off by pushing the AUTO key.


When the Alarm LED is ON or blinking, check the state of the automatic transfer switch and repair the possible fault situation. An active alarm is set off by pushing the AUTO key.


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10. Using automatic control units OMD200 and OMD30010.1 Interface

Figure 10.1 Interface of OMD200 and OMD300

10.2 Confi guration 10.2.1 Rotary Switches

Figure 10.2 Selection of delay time and voltage threshold, the factory settings are shown in the fi gure, the available voltage threshold settings / voltage in the table

Delay time (Ts)Delay time for the automatic switching is set by a rotary switch (Ts). Delay time is the time before activating the switching sequence and the back-switching sequence, when an anomaly has occurred. Available selections for delay time are: 0, 5, 10, 15, 20, 25, 30 s.

Normally with this rotary switch is also set the Generator stop delay Gs to the same value as Delay time Ts. The DIP-switch 24-4 has to be in OFF-position (default). If the DIP-switch 24-4 is in ON-position, the Generator stop delay Gs will always be 5 minutes. See page 36.

Voltage threshold (Lim) with TEST functionVoltage threshold is set by a rotary switch (Lim). Available selections for voltage threshold are: 5, 10, 15, 20, 25, 30 %, see the available settings / voltage in Figure 10.2. Setting the voltage threshold also sets the unbalance to the same level.

10. Using automatic control units OMD200 and OMD300

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Installation and operating instructions, OTM_C_D_10. Using automatic control units OMD200 and OMD300

Figure 10.3 Keypad on OMD200 and OMD300

AUTO keySelecting the automatic control unit OMD200 or OMD300 to the manual or automatic mode. An active alarm can reset by the AUTO key.

O keySetting the automatic transfer switch OTM_C_D to the OFF position in manual and auto mode; both switches (I and II) are in the OFF position. After pressing the O-key the automatic control unit OMD_ is always in manual mode.



The TEST position enables simulation of switching sequences step-by-step, see chapter 10.3 TEST sequence, page 75.

10.2.2 Keypad


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10.2.3 LEDs

Line Status LED Indication

Voltage OK ON

No voltage OFF

Overvoltage Fast blinking (5 Hz)

Undervoltage Blinking (1 Hz, 50% ON / 50% OFF)

Invalid frequency Blinking (1 Hz, 90% ON / 10% OFF)

Unbalance Blinking (1Hz, 10% ON / 90% OFF)

Table 10.1 Line status indication

Switch in position I (I)A red I LED is ON, when the automatic transfer switch OTM_C_D is in the I position (the I-switch is ON and the II-switch is OFF), the LED is OFF otherwise. If transition from the O position to the I position fails, the I LED will blink.

Switch in position II (II)A red II LED is ON, when the automatic transfer switch OTM_C_D is in the II position (the II-switch is ON and the I-switch is OFF), the LED is OFF otherwise. If transition from the O position to the II position fails, the II LED will blink.

AlarmA red Alarm LED signals an external alarm. Alarm status is explained in the table on next page. An active alarm is set off by pushing the AUTO key.


Figure 10.4 LEDs on OMD200 and OMD300

LN 1 - Switch IA red LN 1 LED signals the status of the line LN 1, when the switch I is ON. Line status is explained in the table below.

LN 2 - Switch IIA red LN 2 LED signals the status of the line LN 2, when the switch II is ON. Line status is explained in the table below.

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No alarm OFF


NOTE: When the handle is removed, the automatic control unit will stay in Manual Mode and the Alarm LED will be OFF.

AutoA green Auto LED signals the automatic or the manual mode. When the OMD200 or OMD300 is in automatic mode, the Auto LED is ON. When the device is in manual mode, the Auto LED is OFF. In the test sequence, the Auto LED is blinking.

PowerA green Power LED signals the power status. When power is ON, the Power LED is ON. The OMD200 or OMD300 will remain in standby state at least one minute after power failure. A blinking Power LED indicates standby mode.

10.2.4 External transformerWhen OMD200 is used in network, where N is not connected, the external voltage transformer must be used to drop voltage level. The transformer has to fulfi l the following requirements:

It has to be Main to Phase Voltage Transformer It has to be isolative Effective value has to be 40 VA (see fi gure 6.7: Control circuit diagram OMD200, page 48)

10.3 TEST sequence

Figure 10.5 Lim -rotary switch is set to the TEST position

When the Lim rotary switch is set to the TEST position, automatic control unit OMD200 or OMD300 enters the test sequence. All the LEDs are fi rst blinking a couple of times to give the information that the LED is functioning.

In the TEST position it is possible to simulate switching and back-switching sequences step-by-step by pressing the AUTO key. The user can interrupt the simulation at any place and return to normal use of the device. More information, see page 62.

NOTE: In the TEST sequence the power circuit is switched on!

NOTE: After testing the user must ensure that the device is not left in the TEST position by accident.




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11. Using automatic control unit OMD80011.1 Interface

Figure 11.1 Interface of OMD800 Figure 11.2 Keypad of OMD800

11.2 Confi guration11.2.1 KeypadAUTO Selecting the automatic control unit OMD800 to the manual or automatic mode. An active alarm is set off by pushing the AUTO key.

O keySetting the automatic transfer switch OTM_C_D to the OFF position in manual and auto mode; both switches (I and II) are in the OFF position. After pressing the O-key the automatic control unit OMD is always in manual mode.



Browsing keys (Enter, ESC, Up, Down)There are four browsing keys to operate the automatic control unit OMD800 from the display.

Enter is used to accept function

ESC is used to return one step backwards

UP is used to move one step up on the menu

DOWN is used to move one step down on the menu


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11.2.2 LEDs




No alarm OFF


NOTE: When the handle is removed, the automatic control unit will stay in Manual Mode and the Alarm LED will be OFF.

AutoA green Auto LED signals the automatic or the manual mode. When the automatic control unit OMD800 is in automatic mode, the Auto LED is ON. When the device is in manual mode,the Auto LED is OFF. In test sequence the Auto LED is blinking.

PowerA green Power LED signals the power status. When power is ON, the Power -LED is ON. The automatic control unit OMD800 will remain in standby state at least one minute after power failure. A blinking Power LED indicates standby mode.

Tx/Rx A green Tx/Rx LED signals the state of communication bus. When the LED is on, the automatic control unit OMD800 is sending data to the bus.

Figure 11.3 LEDs on OMD800

AlarmA red LED (Alarm) signals an external alarm (switching logic disabled or both automatic transfer switch positions I and II active). Alarm status is explained in the table below. An active alarm is set off by pushing the AUTO key.




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11.2.3 DisplayThe display is a graphic display with following menu pages:

11.2.3.1 Default pageDefault page shows the status of the protection devices and the status of two monitored lines and eventually of the generator. Status is shown as a graphic picture, where graphic LEDs and a specifi c line status code indicates the status of LN1 and LN2. When the LED is OFF, there is no voltage in the line and the status code for the line is 1. When the LED is ON, there is voltage in the line and the status code is missing. In the case of an anomaly, the LED is OFF and the status code indicates what is at fault. Below the line status code the measured values of voltage and frequency are shown. Status codes are defi ned in the table below:


Code Status of the line Explanation

1 No voltage There is no voltage on line1/line2

2 Undervoltage Value of voltage is under defi ned settings

3 Overvoltage Value of voltage is over defi ned settings

4 Phase missing There is one or more phases missing

5 Voltage unbalance Difference between lowest and highest voltage is too big

6 Incorrect phase sequence Phases have been swapped (line2 is connected to line3 etc.)

7 Invalid frequency Value of frequency is out of defi ned settings

Figure 11.4 The Default pages show the status of the device and the monitored lines

When the generator is started, the letter G and the arrow up symbol on the right side of line 2 (LN2) status are in the default page. When the generator is stopped, the letter G and the arrow down symbol on the right side of line 2 (LN2) status are in the default page. When the generator is not used, there is no sign in the default page (see the page 81, Generator Usage).

Table 11.2 Line status codes

Figure 11.5 The Default pages show the status of the generator; started or stopped, when in System Confi guration/Generator Usage Generator in Use is defi ned, see page 81

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11.2.3.2 Main Menu pageFrom Default page is entered to Main Menu page by pushing the ENTER key. Main Menu page is the main page that allows entering in all the confi guration subpages:

Figure 11.6 The Main Menu page allows the entering in all the confi guration subpages

11.2.3.3 System Confi gurationThe System Confi guration subpage can be confi gured with the attributes of the monitored lines; see Table 11.3. The attribute selection and its value changes are made by using UP, DOWN and ENTER keys.

The system confi guration requires a password. Password consists of 4 numbers, it is given by UP, DOWN and ENTER keys. The password for the fi rst entering to the system is 0001. Please, change the password to your own according the guidelines under the subpage Device Confi guration; see pages 84 and 85. The password is valid one minute after leaving System Confi guration; for example, back to the Main Menu page. After that time the user have to give the password again when returning to the System Confi guration pages. If the password is forgotten/lost, please, contact product support.

Table 11.3 Attributes and values of the System Confi guration

Attribute Values

Rated operational voltage Ue 100V/57V 115V/66V - 120V/70V - 208V/120V - 220V/127V - 230V/132V - 240V/138V - 277V/160V - 347V/200V - 380V/220V - 400V230V - 415V/240V - 480V/277V

Rated frequency 50Hz and 60 Hz

Number of phases 1-phase / 3-phase with N / 3-phase without N

Secondary load Not used / Opening only / Opening and Closing

Generator usage No Generator / Generator in use

Line Priority No Line Priority / Line 1 (LN 1) - Switch I

11. Using automatic

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