Maintenance Method for Controller Failure of Cummins Diesel Generator Set

The controller of Cummins diesel generator set is the control part of the generator and the brain part of Cummins diesel generator set, which controls the normal operation of the whole Cummins diesel generator set. Therefore, if the controller fails in operation, it will have a direct impact on the operation of Cummins diesel generator set.

1. Fault phenomenon: Cummins diesel generator set can be started, but the controller of Cummins diesel generator set shows that the start fails.

Cause of fault: The successful starting condition is: power generation, but Cummins diesel generator set is too slow to establish voltage, so that the control module can not detect the generator frequency within the starting time, resulting in starting failure.

Solution: Modify the starting success condition to: power generation+speed, and add the starting success judgment condition.

Fault phenomenon: press the manual key, the Cummins diesel generator set does not start, and the Cummins diesel generator set controller will display the start and safe operation delay. ‍‍

Reason for fault: In the conditions for successful startup, the speed is set to 0RPM and the power generation frequency is set to 0HZ.

Solution: Set the value of the startup success condition correctly. For example, the rotational speed is 360 rpm, the frequency is 14Hz, and the oil pressure is 200kpa.

3. Fault phenomenon: There is no output from the power on shutdown output port. ‍‍

Fault cause: The power on shutdown output time is set to 0s. ‍‍

Solution: Set the shutdown time at a certain point, for example, the power on shutdown time is 20 seconds

4. Fault symptom: Shutdown failure

Fault reason: The condition for successful startup has selected to detect the oil pressure during startup, and the oil pressure value is not 0kpa during shutdown

Solution:

1) Handle oil pressure faults. ‍‍

2) The modification of the conditions for successful startup does not include oil pressure. ‍‍

5. Fault phenomenon: The speed of the parallel control module is not adjusted

Fault reason: SW2 of the parallel control module GOV is set to 0

Solution: The SW2 value of the parallel control module is within the adjustment range, and it is necessary to set the value of the control module SW2 reasonably. The default value is 2

6. Fault phenomenon: The ATS switch needs to be switched in place twice

Fault reason: When the ATS control module controls the fast closing of the ATS without a break position, the controller module sets two break positions. ‍‍

Solution: Set the correct breaking position based on the dual power switch.

7. Fault phenomenon: ATS switch cannot open

Fault cause: The ATS control module's break position is set to no break position. ‍‍

Solution: Set the correct breaking position based on the dual power switch. ‍‍

The above is the maintenance method of Cummins diesel generator set controller fault introduced by Starlight Power Equipment. Regular inspection of diesel generator is required to understand all fault phenomena so that faults can be found and solved accurately and quickly. As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via sales@dieselgeneratortech.com.