Chapter 14 Fault Codes and DescriptionsC2000 Plus
Torque compensation is too large
Adjust the torque compensation (refer to Pr.07-26
torque compensation gain)
until the output current reduces and the motor does not stall.
Malfunction caused by
interference
Verify the wiring of the control circuit and wiring/grounding of the main circuit
prevent interference.
The motor starts when in free run Enable the speed tracking during start-up of Pr.07-12.
Improper parameter settings for
the speed tracking function
(including restart after momentary
power loss and restart after fault)
Correct the parameter settings for speed tracking.
1. Start the speed tracking function.
2. Adjust the maximum current for Pr.07-09 speed tracking.
Incorrect combination of control
mode and used motor
Check the settings for Pr.00-11 control mode:
1. For IM, Pr.00-11 = 0, 1, 2, 3, 5
2. For PM, Pr.00-11 = 4, 6, or 7
The length of motor cable is too
long
Increase AC motor drive’s capacity.
Install AC reactor(s) on the output side (U/V/W).
Hardware failure
The ocA occurs due to short circuit or ground fault at the output side of the drive.
Check for possible short circuits between terminals with the electric meter:
B1 corresponds to U, V, W; DC- corresponds to U, V, W;
corresponds to U
V, W.
If short circuit occur, return to the factory for repair.
Check if the setting for stall
prevention is correct
Set the stall prevention to the proper value.
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