Kohler 1250-2250 kW, Operation

Page: 12 / 76

TP-6161 1/12 12 Section 1 Specifications and Features
The 16-light controller with communications has a new
circuit board GM28725 that is different in appearance
and has additional functions from the earlier versions
but is a
direct replacement for earlier version circuit
boards including A-336415 . Features of the new
circuit board include the following items:
D
Red circuit board, previous versions are green.
D
Terminal strips (TB1, TB2, and TB3).
D
SW1 DIP switch (8 switches).
D
Communication connector P21 for Modbus
r
to
download new application program software or to
connect the remote serial annunciator using RS-485
communications.
Requires RS-485 to RS-232
converter for downloading application program.
D
Communication connector P22 for J1939 engine
communication.
New Application Program Software. Contact your
local authorized distributor for application program
updates when instructed to do so during troubleshooting
and/or when adding specific accessories.
Refer to
TT-1285 Program Loader Software instruction for
additional download information.
1.2.1 Annunciator Panel Lamps
Figure 1-2 lists the annunciator lamps included on each
controller and describes the lamp functions.
Lamp Description
Air damper This light is not used on current standard products.
Auxiliary fault Flashes or lights upon fault detection. Figure 1-3 describes auxiliary fault conditions.
High engine
temperature Lights if the engine has shut down because of high engine temperature. The shutdown occurs 5 seconds after the
engine reaches the high engine temperature shutdown range.
Low oil pressure Lamp lights if the generator set shuts down because of insufficient oil pressure. The shutdown occurs 5 seconds
after the engine reaches the low engine oil pressure shutdown range.
Overspeed Lamp lights if the generator set shuts down because the governed frequency on 50/60 Hz models exceeds
60/70 Hz.
Overcrank Cranking stops and the lamp lights if the engine does not start after 30 seconds of continuous cranking or
75 seconds of cyclic cranking. See Section 2.3.1, Normal Operation.
Note: The engine ECM may limit the crank cycle even if the controller is set to a longer time period.
Cranking stops and the overcrank lamp lights after 25 seconds if the starter or engine does not turn (locked rotor).
The overcrank lamp flashes if the speed sensor signal is absent for longer than one second.
Low water
temperature Lights if water temperature falls below the minimum preset temperature. This lamp may require an optional
prealarm sender kit in order to function.
Battery charger fault Lights if the battery charger malfunctions. This lamp requires an optional battery charger.
Emergency stop Lights and the generator set shuts down if the optional emergency stop switch is energized either locally or from a
remote location. The local emergency stop switch is standard on selected models.
Generator switch not
in auto
Lights when the generator set master switch is in the RUN or OFF/RESET position.
High battery voltage Lights if the battery voltage rises above preset level. An optional battery charger is required for the lamp to function.
Low battery voltage Lights if the battery voltage drops below a preset level. This lamp requires an optional battery charger in order for
the lamp to function.
Low fuel warning Lights if the fuel level in tank approaches empty. This lamp requires a low fuel sensor in the fuel tank in order to
function. On gas-fueled systems, this lamp lights if the gas line pressure drops below a preset level.
Prealarm high engine
temperature Lights if the engine temperature approaches the shutdown range. This lamp may require an optional prealarm
sender kit.
Prealarm low oil
pressure Lights if the engine oil pressure approaches the shutdown range. This lamp may require an optional prealarm
sender kit in order to function.
System ready Lights when the generator set master switch is in the AUTO position and the system senses no faults. Indicates
that the generator set is ready for operation.
Figure 1-2 Annunciator Panel Lamps
Modbus
r
is a registered trademark of Schneider Electric.