D-500L Firmware V-5.8
K35D03-EN - 128 -
The unit is able to provide a digital output function in order to drive the fuel pump motor.
The fuel pump is used to transfer fuel from the large capacity main tank (if exists), to the genset daily tank
which is generally integrated in the chassis and has a limited capacity.
The fuel level reference is measured through the analog fuel level sender. When the measured fuel level
falls below
Fuel Pump Low Limit
parameter, the fuel pump output function will become active. When the
fuel level reaches
Fuel Pump High Limit
parameter, the output function will become passive. Thus the
chassis fuel tank level will be always kept between
Fuel Pump Low Limit
and
Fuel Pump High Limit
parameters.
If the
Fuel Pump High
Limit is not reached within
Fuel Filling Timer
duration, then the fuel pump will
stop for safety.
The fuel pump relay function may be assigned to any digital output using
Relay Definition
program
parameters.
The unit provides a special function for the fuel solenoid control of a gas engine.
The fuel solenoid of a gas engine is different from a diesel engine. It should be opened after the cranking
has been started and should be closed between crank cycles. The delay between the crank start and
solenoid opening is adjusted using the
Gas Solenoid Delay
program parameter.
The gas engine fuel solenoid relay function may be assigned to any digital output using
Relay Definition
program parameters.
The controller is able to provide a pre-transfer digital output function.
This function is designed for elevator systems, in order to bring the cabin to a floor and open cabin doors
before transfer.
The duration where this output is active is adjusted with the
Pre-Transfer Delay
parameter.
If the Pre-transfer Delay parameter is not zero, this will delay
transfers by the same amount.
26.18. PRE-TRANSFER SIGNAL
26.17. GAS ENGINE FUEL SOLENOID CONTROL
26.16. FUEL PUMP CONTROL
Содержание D Series
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