Main Logic Circuit Board; Controller Operation - Kohler 14EKOZD Operation

2.13.2 Main Logic Circuit Board

The main logic circuit board provides the connection sockets to connect the controller to the engine/generator, input/output
connections, optional I/O module kit, and circuit protection fuses. See the Accessories section for the circuit board connectors.
Circuit Board Connections
P1 (35-Pin) Connector for engine/generator wiring harness.
P2 (14-Pin) Connector for sensor input connections and relay driver output connections.
P3 (8-Pin) Connector for generator set output voltage connection and paralleling bus voltage sensing connections.
P4 (Ethernet) Connector connects to a network communication line.

2.14 Controller Operation

Note:
Opening seacock. Before starting the generator set, open the seacock to allow cooling water passage. Failure to do so could
damage the seawater pump impeller and cause serious engine overheating damage.
Note:
Transfer switch. Check that the marine ship-to-shore transfer switch, if equipped, is in the ship position.
Note:
If the generator set does not start after 3 crank attempts (an overcrank fault occurs):
1) Close the seacock.
2) Completely drain the water from the exhaust system at the silencer's drain plug.
3) Do not attempt generator set restart.
4) Contact an authorized Kohler
starting and cause seawater entry into the engine cylinders through the exhaust valves. Water ingested into the engine may
cause major engine damage that the Kohler Co. warranty does not cover.
The controller operation includes several types of starting and stopping functions as detailed below. The controller buttons,
lamps, and alarm horn functions are summarized in Figure 16.
There are three primary modes of operation, selected by pressing the respective buttons:
•
OFF
•
RUN
•
AUTO (Standby Mode)
When the OFF button is pressed, the generator set is in OFF or goes to OFF and will not start. When the RUN button is pressed,
the generator set starts and runs until the OFF or AUTO button is pressed or until a fault is received. When the AUTO button is
pressed, the generator set enters the Standby Mode (STANDBY-RUNNING or STANDBY-OFF depending upon the start signal).
•
OFF. If the generator set was previously running, pressing the OFF button immediately shuts off the generator set, with no
engine cooldown. The generator set remains off and will not respond to a remote start signal.
•
RUN—Local Start. A single generator set starts. No other generator sets in the system will start (or stop).
•
AUTO—Standby or System Ready. The generator set is waiting for a start signal. The generator set will start and run
when a start signal is received via a remote start, local auto-start, or communications-based start.
All generator sets in the system (connected by PGEN and in Standby Mode by pressing AUTO) will start when any one of the
generator sets receives a start signal.
Any generator set in the system not in AUTO will not start.
If Generator Management is on, some generator sets may shutdown after a period of time.
With removal of the start signal, all generator sets will shutdown with the appropriate engine cooldown.
46
®
distributor/dealer. A water-filled exhaust piping and silencer may further hinder generator
TP-7044 6/23