Kohler Decision-Maker MPAC 750, Operation

Page: 16 / 48

TP-6865 4/14 16 Section 2 Sequence of Operation
Unloaded Exercise Sequence Ends
1. Engine cooldown time delay expires.
2. The engine start contacts open, signaling the
generator to stop.
Loaded Exercise Sequence Starts
1. Exerciser timer begins.
2. The generator is signaled to start.
3. The generator starts and Source E becomes
available.
4. Preferred-to-standby time delay and pre-transfer
load control sequences run.
5. Contactor transfers to Source E.
Source E Fails (Source N is available)
1. Exerciser is deactivated.
2. Contactor immediately transfers to Source N.
3. Immediate failure to acquire standby alarm.
4. Engine cooldown time delay expires.
5. Engine start contacts open.
Loaded Exercise Sequence Ends
1. Contactor transfers to preferred.
2. Engine cooldown time delay expires.
3. The engine start contacts open, signaling the
generator to stop.
2.2.3 Test Sequence
Unloaded Test Function is Initiated
1. The generator set is signaled to start.
2. The generator starts and Source E becomes
available.
Unloaded Test Function is Ended
1. Engine cooldown time delay expires.
2. The generator is signaled to stop.
Loaded Test Function is Initiated
1. The generator is signaled to start (engine start
contacts close).
2. The generator starts and Source E becomes
available.
3. Preferred-to-standby time delay expires.
4. Contactor transfers to Source E.
Source E Fails (Source N is available)
1. Test function is deactivated.
2. Contactor immediately transfers to Source N.
3. Immediate failure to acquire standby alarm.
4. Engine cooldown time delay expires.
5. Engine start contacts open.
Loaded Test Function is Ended
1. Standby-to-preferred time delay sequence runs.
2. Contactor transfers to Source N.
3. Engine cooldown time delay expires.
4. The engine start contacts open, signaling the
generator to stop.