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Generator controller common faults and maintenance experience

2015-05-08 11:01      Click:


After many years of accumulation, will be Generator controller Common faults and maintenance experience and processing methods listed for generator maintenance personnel reference application.



The fault phenomenon

check

Check the result

The cause of the problem and the processing method

The oil pressure and temperature measurements are inaccurate

Is there a connection sensors dedicated the cathode circuit

Have a connection

Reconnect the battery cathode to the engine block, especially rust

Sensor connection screws is loose

There is no

- port voltage measure oil pressure sensor, requires less than 0.3 V

Low oil pressure alarm

LCD display is low oil pressure switch alarm or low oil pressure alarm

Oil pressure switch

- port configuration errors
- oil pressure switch circuit

Start with no response

Low oil pressure

No processing reference oil pressure measurement

Start the motor rotation, but success cannot be started

If the LCD display start state

Is not normal

Read the instructions carefully

If there is a electric fuel measuring controller output

There is no

The controller failure

With the output

Check the motor output of the controller

If there is a electric starter motor measurement controller output

There is no

The controller failure

There are

- start relay failure
- start the motor damage or jammed

Start the motor rotation, but success cannot be started

Check whether actuator movement or speed governor to the output of the actuator is more than 6 VDC

There are

Please refer to the speed control system troubleshooting methods

There is no

Check if there is a power of governor

If there is a power of governor

There is no

External extension relay contact is not good

There are

Please refer to the speed control system troubleshooting methods

After the success of the start motor not separation

Check the startup success conditions configuration, especially start successful oil pressure


Strongly recommend the use of speed conditions as a condition of separation will be more accurate

Boot failure warning

Check the other warning message in the process of start



Speed signal loss report to the police

Check for access speed sensor, or related lines

normal


Check whether the speed signal voltage is reached or exceed 2 vac

Low voltage signal

- clean the iron filings on sensors
- reduce the sensor and the clearance between the flywheel
- the sensor failure

No idle function

Check the governor of idle speed circuit connected to the controller

normal

- check the controller corresponding port configuration is correct
- check the idle time delay controller is 0

No help in the operation of the downtime

Carefully check whether there is a warning message

There is no

The controller failure

Since the launch of mains failure will not

Check the mains detection circuit

normal

Check the relevant mains failure configuration

The outage failure warning

After downtime check whether the oil pressure is not zero

0

The controller failure

During startup owe speed or undervoltage downtime

Increase the warm-up time




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