EM

Hold-open magnets

2

DORMA EM

Hold-open magnets

EM, GB

DORMA’s new range of EM hold-open magnets provides the perfect complement to a technically and aesthetically advanced range of fire and smoke door products. These new market-orientated developments are character-ised by their ease of fixing

and functional elegance.And thanks to comprehen-sive quality assurance, they also offer maximum reliability and service life.

Certified to ISO 9001

Data and features 500 G 500 U 500 AA modular system for fire and smoke doors Setting new standards for hold-open magnets

... for the trade

2 Cost-effective modular system offering the advantages of maximum flexibility with minimal stocking levels.

2 A further component in the DORMA range for single-source supply.

... for the installer

2 Quick and easy to fix.2 Sophisticated accessories

suitable for a wide range of applications.

... for the specifier/

architect

2 Uniform appearance common to all models.

2 Modular system for applica tion flexibility.

... for the user

2 Unobtrusive.2 Concealed cable run.2 Optimum holding force

with minimum power consumption.

Plus points ...

Fixing Surface-mounted 2 – 2

Flush-mounted – 2 –

Floor-mounted1) 2 – 2

Holding force 400 N 2 2 2

Anti-remanence pin 2 2 2

Test pushbutton – – 2

Polarity reversal protection 2 2 2

Operating voltage 24 V AC/DC 2 2 2

Power consumption in W 1.5

On-load factor in % 100 (rated for continuous service)

Class of protection IP 402)

Ambient temperature in °C 0 – 50

Weight in kg 0.41 0.42 0.46

Dimensions Width 85 85 85in mm Length 85 85 85

Depth 32 35 35

Hold-open devices tested to EN 1155 2 2 2

-mark for building products 2 2 2

2 yes – no1) Floor angle bracket required (accessory)2) EM 500 A in conjunction with floor angle bracket:

Class of protection IP 43

DORMA MAG DORMA MAW DORMA MAT

DORMA EM 500 G DORMA EM 500 U DORMA EM 500 A

81

Ø 4

7

7 575

20

Ø 5

0

39

Ø 4

,5

35

Ø 4

2

10

32

Ø 4

2

10

66

85

66

85

60

44

44

55

55

Ø 4

7

7 5

Ø 4

,5

60°

60°

52

Ø 4

2

35

10

20

Hold-open magnets

Armature plates

Buffer zone

EM, GB 3

Electro-magnets of theseries DORMA EM 500 for24v AC/DC are tested andthird-party verified by theVerband der Sachversicherer(VdS) e.V., Cologne(Association of PropertyInsurers), and have beenapproved by the GermanInstitute for Building Techno logy (DIBt), Berlin,

for use in combination with the DORMA RMZ smoke detectorand other reputable smokedetector systems, (e.g. withDORMA RMZ: approvalcertificate No. Z-6.5-1890).In Germany, inspectionand approval of the holdo-pen system is additionallyrequired.

F Approval certification

Electro-magnets for hold-open systems

The statutory regulations which apply in many coun-tries allow fire and smoke doors to be held open for a limited period of time by electro-magnetic hold-open devices which, in the event of a fire, are de-energised to release the door so as to enable auto matic closing.Such systems consist of a hold-open device, fire/smoke detection and alarm system,

power supply and release device, and generally have to be approved by an accredited institute or building authority (in Germany: the German Institute for Building Technology, Berlin).Electro-magnets are devices which hold open fire and smoke doors. In the event of a fire, the hold-open magnet is

de-energised by the release device responding to a signal from the fire detector. The automatic closing action is provided by door closers which, in Germany, must correspond to DIN EN 1154 and be third-party verified. It must also be possible to manually release the hold-open device. According to the guidelines for hold-open systems applicable to

Germany, a manual release pushbutton is necessary when employing electro-magnets in such applicati-ons. The pushbutton employed must be red, carry the wording “Close door”, be located in the immediate vicinity of the door, and must not be hidden when the door is in its hold-open position.

HT

EM

RMZ

230 V AC ±10 %

MAG

EM = Electro-magnetHT = Manual release pushbuttonMAG = Armature plateRM-N = Smoke detector (ceiling-mounted)RMZ = Smoke detector (lintel-mounted)

G-SR-EMR = Door co-ordinator with integral smoke detector

RM-N

RM-N

MAG MAG

HT

EM

EM

230 V AC ±10%

G-SR-EMR

4

DORMA EM

Modular system overview

EM, GB

52 33 55

84 65 87

113 94 116

MAG

MAW

MAT

EM 500 G EM 500 U EM 500 A

Specification text

EM 500 GHold-open magnet with pole reversal protection for wall or floor mounting* Holding force 400 N24v AC/DC Generally approved by DIBt-Berlin for use in hold-open systems. (System acceptance inspec-tion may be necessary.)Requisite accessories: Armature plate

Make: DORMA EM 500 G

EM 500 UHold-open magnet with pole reversal protection for flush fixing Holding force 400 N24v AC/DC Generally approved by DIBt-Berlin for use in hold-open systems. (System acceptance inspec-tion may be necessary.)Requisite accessories: Armature plate

Make: DORMA EM 500 U

EM 500 AHold-open magnet with pole reversal protection and integral test pushbutton, for wall or floor mounting* Holding force 400 N24v AC/DC Generally approved by DIBt-Berlin for use in hold-open systems. (System acceptance inspec-tion may be necessary.)Requisite accessories: Armature plate

Make: DORMA EM 500 A

*) in conjunction with floor angle bracket, see Page 5

5EM, GB

DORMA EM

Accessories

64

26

29 37 44

10

8

84

22

85

85

UP

AP

82

82

Floor angle bracket

74 6839 36

66

35 323235 3235

EM 500 A EM 500 G

For installation of hold-open magnets EM 500 G and EM 500 A as floor-mounted units.

A DORMA EM 500 B hold-open magnet for floor mounting comprises an EM 500 G or EM 500 A hold-open magnet and an

associated floor angle bracket.

Specification text: see Page 4

Adapter frame

54 61

EM 500 G EM 500 A

The frame can be combined with the individual hold-open magnets of the series EM 500 G/U/A.

Separate manual release switchHT - UP HT - AP

18 51

For releasing the hold-open device by hand.

When employing electro-mag nets in hold-open systems for fire and smoke doors, a manual switch may have to be provided in accordance with local or

national regulations (e.g. the guidelines of the German Institute for Building Technology (DIBt), Berlin, for German applications).

Closedoor

92,5

54,5

7055

6ø 4,5

ø 50

175

/ 325

/ 47

512

5 / 2

75 /

425

150

/ 300

/ 45

0

185

5

ø 55

ø 4,

5

5544

5544

6

DORMA EM

Hold-open magnets

EM, GB

Special models EM 500 H for floor, ceiling and wall mounting, with integral test pushbutton

Specification text:24v DC hold-open magnet with pole reversal protection and integral test pushbutton for floor, ceiling and wall mounting.Holding force 490 N.Generally approved by theDIBt-Berlin for use in hold-open systems (in Germany).(System acceptance inspec-tion may be necessary.)

Size:Y 150/175 mmY 300/325 mmY 450/475 mmRequisite accessories:Armature plateMake: DORMA EM 500 H

EM + RMZ + 2x RM-N

N LPE

230 V A C

RMZ

B 10A

167 18 49

1012 23 1411

121 kΩ

HT

2 x 121 kΩ

1 234

-

C

B

T

A

+

-

-

B

T

A

+

-

1 234

2 x 121 kΩ

C

DORMA RM-N DORMA RM-N

EM

Recommended cabling: I - (St) Y 2 x 2 x 0.6

RS-AM (Optional)

7EM, GB

Note: A hold-open magnet for floor mount ing comprises an electro-magnet of the type EM 500 G or EM 500 A and the floor angle bracket.

y= Hold open magnet separate

X = Armature plate separate

# = Accessory

Colour XXwhite 11stainless steel finish 12

Separate manual release switch

HT-AP35901532

HT-UP35901531

MAG MAW MAT MAG I Floor Adapter angle frame bracket

xxX 69020110 xX 69020111 xX 69020112 xX 69021113 69011540 690xx541

Standard equipment and accessories

EM 500 G X X X 24 V AC/DC y690xx511 y y y

#

#

EM 500 U X X X 24 V AC/DC y690xx521 y y y

#

EM 500 A X X X 24 V AC/DC y690xx531 y y y

#

#

EM 500 H 150/175 mm X 24 V DC y69015005 y 300/325 mm X y69015006 y X y69015007 y

www.dorma.de

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DORMA Schweiz AG Industrie Hegi 1a CH-9425 Thal Tel. +41 71 88646-46 Fax +41 71 88646-56 www.dorma.ch

DORMA Hüppe Austria GmbH Hollabererstraße 4b A-4020 Linz Tel. +43 732 600 451 Fax +43 732 650 326

DORMA Hüppe Raumtrennsysteme GmbH + Co. KG Industriestraße 5 D-26655 Westerstede/Ocholt Tel. +49 4409 666-0 Fax +49 4409 666-489

DORMA GmbH + Co. KG DORMA Platz 1 D-58256 Ennepetal Tel. +49 2333 793-0 Fax +49 2333 793-4950

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