Original Issue Date: 2/12
Model: 14RESA/RESAL, 20RESA/RESAL, and 48RCL
Market: Residential/Light Commercial
Subject: Programmable Interface Module (PIM) Kits GM81529-KP1-QS
The optional Programmable Interface Module (PIM)
provides two programmable inputs and six
programmable outputs for connection to
customer-supplied equipment. The PIM operates only
with generator sets equipped with the Kohler RDC2 or
DC2 controller, including the following models:
ThePIM ismounted in aNEMA3Renclosure, which can
be installed indoors or outdoors. The PIM with
enclosure is shown in Figure 1. For outdoor installation,
use watertight conduit hubs.
Figure 1 Programmable Interface Module (cover
removed for illustration)
Inputs and outputs are factory-set to theevents shown in
Figure 7. The inputs and outputs 3--6 can be changed
using a laptop computer connected to the RDC2 or DC2
controller and Kohler SiteTech software . SiteTech is
available to Kohler-authorized distributors.
A maximum of three accessory modules can be
connected to the generator set. Accessorymodules can
include one programmable interface module (PIM), one
Model RXT transfer switch, and/or one load control
Read the entire installation procedure and compare the
kit parts with the parts list at the end of this publication
before beginning installation. Perform the steps in the
OnCue Remote Monitoring and
The Kohler OnCue Generator Management System
can be used to monitor the PIM inputs and outputs.
OnCue can also be used to remotely control PIMoutputs
3 through 6. For example, connect output 3 to the storm
shutters on your vacation home and label it Storm
Shutters in the Power Chain view in OnCue. When bad
weather is forecast, you can use your computer to close
the storm shutters from a remote location.
The OnCue kit is available from Kohler-authorized
distributors and dealers. See TP-6796, OnCue
Software Operation Manual, for instructions to connect
the generator set to the Internet and use OnCue on a
2 TT-1584 2/12a
Observe the following safety precautionswhile installing
Accidental starting.Can cause severe injury or death.
Disconnect the battery cables beforeworking on the generator set.
Remove the negative (--) lead firstwhen disconnecting the battery.Reconnect the negative (--) lead lastwhen reconnecting the battery.
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on thegenerator set or equipment connected to the set, disable thegenerator set as follows: (1) Press the generator set off/resetbutton to shut down the generator set. (2) Disconnect thepower to the battery charger, if equipped. (3) Remove thebattery cables, negative (--) lead first. Reconnect the negative
(--) lead last when reconnecting the battery. Follow theseprecautions to prevent the starting of the generator set by theremote start/stop switch.
Hazardous voltage.Will cause severe injury or death.
Disconnect all power sources beforeopening the enclosure.
1. Press the OFF button on the generator sets
2. Disconnect the utility power to the generator set.
3. Disconnect the generator set engine starting
battery(ies), negative (--) lead first.
4. Remove the PIM enclosure cover. Cover the PIM
circuit board to protect it from metal chips and
5. Cut holes in the PIMenclosure for the generator set
communication leads and input and output leads.
For outdoor installation, use weather-tight conduit
Note: Use separate conduit for the low-voltage
communication leads to the generator set
controller. To ensure separation of circuits
per NEC requirements, route low-voltage
AC and DC wiring separately from
6. Mount the PIM enclosure to a wall. See the
dimension drawing in Figure 26 for the mounting
hole size and locations.
Note: The mounting holes have gaskets to seal
out moisture. Use washers with the
mounting screws to protect the gaskets.
7. Connect A, B, PWR, andCOMon connector P10 to
the corresponding generator set connectors. See
Figure 2 through Figure 5. Use Belden #9402
(4-conductor) or equivalent 20 AWG shielded,
twisted-pair cable. The maximum cable length is
61 m (200 ft.).
Note: If a longer cable run is required, or if
additional accessories such as a transfer
switch or a load control module (LCM) are
used, seeCommunication Connectionswith
Additional Accessories on page 5.
1. Customer connection terminal block
Figure 2 14/20RESA Terminal Block Location
TT-1584 2/12a 3
1. Customer connection terminal block
Note: Access panel removed for illustration.
Figure 3 Model 48RCL Terminal Block Location
1. TB4, relay 3 and relay 4 connections
2. P10, connection to generator set3. TB2, input 1 and input 2 connections
4. LED1, online
5. TB3, relay 1 and relay 2 connections6. TB5, relay 5 and relay 6 connections
7. LED2, power
Figure 4 PIM Circuit Board Connections and LEDs
Connect one end of each cable shieldto GROUND at the generator set.
Leave one end of each cable shielddisconnected at the last device.
1. Communication cable Belden #9402 or equivalent 20 AWG shielded, twisted-pair cable
NOTE: See Figure 2 or Figure 3 for the terminal block
location on the generator set. Check the decal on thegenerator set for terminal block connections.
Figure 5 PIM Communication Connections to Generator Set
4 TT-1584 2/12a
8. Connect customer equipment to inputs 1 and 2 on
TB2 on the PIM circuit board. See Figure 6 for the
cable size. See the wiring diagram in Figure 27.
9. Connect customer equipment to output relays 1
through 6 on TB3, TB4, and TB5. Note the
factory-default output settings shown in Figure 7.
Refer to the wiring diagram in Figure 27 and
connect to each relays normally open or normally
closed contacts as required.
10. Turn the locking tab out so that the enclosure door
can be secured with a padlock.
11. Install the door and secure with the door screw.
Lock the enclosure door with a padlock to prevent
12. Reconnect the generator set engine starting
battery, negative (--) lead last.
13. Reconnect utility power to the generator set.
14. Press the AUTO button on the generator set
PIM Connection Specifications
Input Rating 10 mA @ 12 VDC dry contact
Output Relay Rating 10 A @ 120 VAC
Wire Size 12--24 AWG
Screw Torque 7 in. lbs
Figure 6 Input/Output Connection Specifications
15. Note the factory-assigned functions for the digital
outputs shown in Figure 7. Use a personal
computer connected to theRDC2or DC2 controller
and Kohler SiteTech software to change the
input and output functions, if necessary. Available
input and output functions are listed in Figure 16
and Figure 17. See TP-6701, SiteTech Software
Operation Manual, for instructions.
PIM Connection SiteTech Name
Input 1 TB2 IN1 Digital Input B1 None
Input 2 TB2 IN2 Digital Input B2 None
Output 1 TB3
Digital Output B1 Generator
Output 2 TB3
Digital Output B2 Common Fault
Output 3 TB4
Digital Output B3 Low Battery
Output 4 TB4
Digital Output B4 Not in Auto
Output 5 TB5
Digital Output B5 Cooldown
Output 6 TB5
Digital Output B6 Normal Source
Figure 7 Inputs and Outputs
TT-1584 2/12a 5
Communication Connections with
See Figure 9 through Figure 14 for connection options
with up to three accessory modules. Accessory
modules can include one Model RXT transfer switch,
one programmable interface module (PIM), and/or one
load control module (LCM).
See Figure 8 for the maximum total cable length with 1,
2, or 3 accessory modules per cable run.
Use Belden #9402 (4-conductor) or equivalent
20 AWG shielded, twisted-pair cable. Note the shield
connections shown in Figure 9.
If longer cable runs are required, #12--14 AWG wire
can be used for the COMand PWR connections. The
maximum total cable length is the value shown for
#12 or #14 AWGwire in Figure 8. The 20 AWG cable
used for communication connections A and B (only)
can be as long as 152 m (500 ft.).
Cable (TB1--PWR and COM)
Maximum length per run, meters (ft.)
Number of Modules (ATS, PIM, and LCM) per Run
1 Module 2 Modules 3 Modules
Belden #9402 or equivalent 20AWG 61 (200) 31 (100) 21 (67)
14 AWG 152 (500) 152 (500) 122 (400)