Kohler APM402 Operation page 135

WARNING
Disabling the generator set. Accidental starting can cause severe injury or death. Before working on the generator set or
equipment connected to the set, disable the generator set as follows: (1) Press the generator set off/reset button to shut down
the generator set. (2) Disconnect the power to the battery charger, if equipped. (3) Remove the battery cables, negative (–) lead
first. Reconnect the negative (–) lead last when reconnecting the battery. Follow these precautions to prevent the starting of the
generator set by the remote start/stop switch.
Battery short circuits. Explosion can cause severe injury or death. Short circuits can cause bodily injury and/or equipment
damage. Disconnect the battery before generator set installation or maintenance. Remove all jewelry before servicing the
equipment. Use tools with insulated handles. Remove the negative (–) lead first when disconnecting the battery. Reconnect the
negative (–) lead last when reconnecting the battery. Never connect the negative (–) battery cable to the positive (+) connection
terminal of the starter solenoid. Do not test the battery condition by shorting the terminals together.
Electrical Connection Procedure
1. Press the generator set master control OFF/RESET button.
2. Disconnect the power to the battery charger, if equipped.
3. Disconnect the generator set engine starting battery(ies), negative (-) lead first.
4. Remove the top panel of the controller connection box.
80 – 300 kW models: Remove the top panel of the controller connection box.
a.
350 – 500 kW models: Remove the front panel from the junction box below the controller.
b.
5. See Figure 66 for connections of analog inputs.
6. Select the normally open (NO) contacts of the relay, Form A dry contact, depending upon the application. Use a two-
wire harness for the NO connections.
7. Supply two lengths of stranded wire to make leads long enough to connect the user-supplied device to the dry contact
terminals and power supply. Use color-coded wire for easy identification. Make leads long enough to allow for walls,
ductwork, and other obstructions. Use separate conduit for the dry contact wiring.
8. 12/24-Volt DC Devices.
Attach the user-supplied 12/24-volt DC accessories to the starting battery positive (+) connection at the starter solenoid
and to the battery negative (-) connection at the engine ground. Otherwise, use a separate 12/24-volt DC supply. Do
not use terminals 42A and 2 on the controller connection kit terminal strip to supply the voltage to the relay contacts.
Supply separate leads connected directly to the battery for the supply voltage. The circuit must include fuse or circuit
breaker protection.
9. 120-Volt AC Devices.
Connect the user-supplied accessories to a separate 120-volt AC power supply. The circuit must include fuse or circuit
breaker protection.
10. Connect the user-supplied device per the Instructions and/or schematic supplied with the device to a power source and
to the dry contact terminals. Cut the user-supplied leads to length, strip lead ends, crimp on spade terminals (not
supplied), and connect the leads to the relay contact screw terminals. Route the wiring for the relay dry contacts away
from the generator set output leads.
11. Repeat Step 6 for the remaining dry contact relays.
TP-6694 9/20
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before working on the generator set. Remove the
negative (–) lead first when disconnecting the battery. Reconnect the negative (–)
lead last when reconnecting the battery.
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