Accessories; Common Fault And Auxiliary Run Relay Board - Kohler 12RES Installation Manual

1.10 Accessories

Have accessories installed by a Kohler authorized
distributor/ dealer or a licensed electrician. Follow the
installation instructions provided with each kit.
separate conduit for AC and DC leads to reduce the
possibility of electrical interference. Verify that the leads
and conduit do not interfere with the operation of the
generator set or obstruct the service areas. Verify that
the electrical installation complies with the National
Electrical Code (NEC) and all applicable local codes.
See Section 2, Wiring Diagrams, for more information
regarding generator set electrical connections.
If there are no accessories, proceed to Section 1.11,
Prestart Installation Check.
1.10.1 Common Fault and Auxiliary Run
Relay Board
The optional relay board provides two additional relays
to control customer-provided equipment:
Common fault relay, energized on a fault.
Auxiliary run relay, energized when the generator set
is running.
See Figure 1-22 for the relay board location.
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1. Relay board location (inside customer connection box)
Figure 1-22 Optional Relay Board Location
TP-6967 2/21
Connect customer equipment to terminal strip TB1 on
the relay board, following the markings on the board.
Connect to each relay's normally open or normally
closed contacts depending on the application. Use size
Use 14 AWG maximum wire for connections to TB1. See
Figure 1-23 and Figure 1-24.
1. Connect customer equipment to TB1, 14 AWG max.
Figure 1-23 Relay Board Connections
Terminal Label
COMMON FAULT NC
COMMON FAULT COM
COMMON FAULT NO
AUX RUN NC
AUX RUN COM
AUX RUN NO
ADV-7948
Note: Use maximum 14 AWG wire for TB1 connections.
Figure 1-24 Common Fault and Run Relay Board
Description
Common fault relay normally
closed contact.
Opens on a fault.
Common fault relay common
Common fault relay normally
open contact.
Closes on a fault.
Auxiliary run relay normally
closed contact.
Open when generator set is
running.
Auxiliary run relay common
Auxiliary run relay normally
open contact.
Closed when generator set is
running.
Harness Connections
Section 1 Installation
GM51403
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23