A53 Z0 9 0020 L En Technical documentation
Chapter : SUPPORT/Troubleshooting
The engine starts but runs above/below nominal speed.
Check the wiring (Same 0V connection between GENSYS 2.0 and the governor)
Check the fuel supply
Check the speed output:
This output (G9-G11) is used to interface with the speed governor. The main objective being to bias the
speed/fuel rack for synchronizing, load sharing, ramping load up and down. This output, only alters the
power (kW), can be set by parameters [E1077] (Offset) and [E1076] (Gain).
When connecting this output you must know the details of the input you are using. For example a
Woodward 2301A uses ± 2.5 Volts input around 0V.
Thus the span to achieve the required span (± 2.5Hz) is ± 2.5 Volts, therefore the settings are:
Gain [E1076]=25% (+/-2,5Vdc)
Offset [E1077]=0% (0V).
It’s important to do the first starting without connect the GENSYS 2.0 speed output in order to be sure that
the engine running at 50Hz. If it’s not the case, the speed governor control must be set correctly.
For the entire settings of the GENSYS 2.0 Speed governor, see §10.1.1.
When you power up the GENSYS 2.0, the display does not work
Check the jumper situated under the plastic cap near the logo on back cover is removed or in OFF position.
If not, remove power supply to remove this jumper or set it to OFF position.
If there is no change, the module is defective and needs to be returned to CRE Technology.
If fault occurs while testing speed or voltage
Check the connection of 0V signals.
In J1939, the communication doesn’t works
- Check that the ECU is powered.
- Check that the configuration correspond to the engine/ECU.
- Check that the J1939 (or MDEC) address is correct (Contact the manufacturer if it’s not a standard
address).
- Check that the wiring is correct (GENSYS 2.0 COM2 to ECU by J1939) and 120Ω resistors in end of
line are set.
- Switch off power supply (GENSYS 2.0 and ECU) and swicth on in order to reset the communication.
- Check that the configuration of the ECU and the ECU unit are consistent with the J1939 norm.
Note : Some ECU don’t give information if the engine is stop. Start the engine to display engine data.
To Next Page
Loading...