Principle diagram
43°C
37°C
Engine heater
relay
Start attempt
DG running
INFO
The engine heater function is only active when the engine is stopped.
6.9.1 Engine heater alarm
If the temperature keeps dropping after the start set point has been exceeded, an alarm will be raised if configured in menu 6330.
6.10 Fuel pump logic
The fuel pump logic is used to start and stop the fuel supply pump to maintain the fuel level in the service tank at predefined levels.
The start and stop limits are detected from one of the three multi-inputs.
Parameters in menu 6550
Parameter
Name Function
6551 Fuel pump log. start Fuel transfer pump start point in percentage.
6552 Fuel pump log. stop Fuel transfer pump stopping point in percentage.
6553 Fuel fill check Delay timer before activating fuel fill check alarm.
6554 Output A
The output relay to be used for control of the fuel pump. The selected relay activates below the
start limit and deactivates above the stop level.
6555 Type
The multi-input or external analogue input to be used for the fuel level sensor.
Choose multi-input if 4-20 mA is used.
Choose "auto detection" if an RMI is used.
6556 Fail class The fail class of the fuel fill alarm.
INFO
The fuel pump relay can be activated via M-Logic.
INFO
The output relay should be configured as a limit relay. Otherwise, an alarm will be raised whenever the output is activated.
The below drawing shows how the fuel pump is activated when the level reaches 20% and stopped again when the level has
reached 80%.
DESIGNER'S HANDBOOK 4189341275A EN Page 126 of 196
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