In the process of using any machine, some faults will occur in the later period. Let's see the general rule of the faults of the indicator lamp of the scotch yoke pneumatic actuator in the process of using.
1. Fault phenomena:
When the scotch yoke pneumatic actuator is powered on, it is found that the power indicator light is not on, the servo board has no feedback, and the signal does not move.
Fault diagnosis and repair process:
Because the power indicator is not on, first check whether the fuse is open. After checking the fuse is intact and comprehensive failure, it can be inferred that the failure may occur in the power supply part of the servo panel. Then check the power indicator, use the multimeter detection to find that the fuse is open, replace the fuse indicator and troubleshoot.

CONCLUSION: Opening the power indicator will cause the whole servo panel not to work.

2. Fault phenomena: (found in debugging)
When the actuator of the scotch yoke pneumatic actuator is energized, the signal can be turned on and off.
Fault diagnosis and repair process:
First, carefully check the feedback circuit, confirm that the feedback signal is fault-free, turn on the indicator light when turning on the signal, explain that the switch on is normal, turn off the indicator light when turning off the signal is not on, explain that there is a problem in turning off the thyristor part. First, check the switch off indicator light, use the multimeter detection to find that the turn off indicator light is open, and then replace it and troubleshoot.
CONCLUSION: Controlled silicon can not move when the indicator light is not turned on or off.
The above two phenomena are some rules in the failure of the indicator lamp of the scotch yoke pneumatic actuator. If the above phenomena occur, you can repair them by your selves according to the repairing process of the small arrangement, or contact the purchaser for repairing.