Configure an analogue input with the Engine > Cooldown > Coolant water [C] function and Configure > Parameters > Engine >
Stop sequence > Cooldown > Temperature threshold.
INFO
You must configure the analogue input function to see the parameters.
8.4.4 Engine shutdown flowchart
The engine is shut down for the following alarm action:
• Trip generator breaker and shutdown engine
The engine is also shutdown if the controller's Emergency stop input is deactivated.
Table 8.18
Engine shutdown flowchart
Genset
shutdown
command
GB open
No
Yes
Stop engine
Running
detection
OFF
No
Yes
Genset
stopped
Trip GB
Alarm
1. GB open: The controller checks whether the generator breaker is open. If not,
the controller trips the generator breaker.
2. Stop engine: The controller shuts down the engine:
• Stop coil system: The controller activates the Stop coil output.
• Run coil system: The controller deactivates the Run coil output.
3. Running detection OFF: If Running detection is still ON after the time
allowed, the controller activates the Stop failure alarm.
INFO
The controller does not require the engine stop conditions to be met for an engine shutdown. Similarly, there is no
cooldown time for an engine shutdown.
8.5 Generator breaker
8.5.1 Introduction
The generator breaker (GB) connects the genset to the busbar. The genset must be running, and synchronised with the busbar, for
the generator breaker to close. The generator breaker is an important part of the system safety, and trips to protect the genset from
problems on the busbar. The generator breaker also trips to stop genset problems from disturbing the busbar.
DESIGNER'S HANDBOOK 4189340911K UK Page 299 of 521
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