Chapter 10 Troubleshooting
: Overload
Potential Cause Checking Method Corrective Actions
The drive has
exceeded its rated
load during
continuous
operation.
Check if the drive is overloaded. The
users can set parameter P0-02 (Drive
Fault Code) to 11 and monitor if the
value of the average torque [%] exceeds
100% always.
Increase motor capacity or
reduce load.
Control system
parameter setting is
incorrect.
1. Check if there is mechanical vibration
2. Accel/Decel time setting is too fast.
1. Adjust gain value of control
circuit.
2. Decrease Accel/Decel time
setting.
The wiring of drive
and encoder is in
error.
Check the wiring of U, V, W and
encoder.
Ensure all wiring is correct.
The encoder of the
motor is damaged.
Please contact your distributor for assistance or contact with Delta.
: Overspeed
Potential Cause Checking Method Corrective Actions
Speed input
command is not
stable (too much
fluctuation).
Use signal detector to detect if input
signal is abnormal.
Ensure that input command
frequency is stable (not
fluctuate too much) and
activate filter function.
Over-speed
parameter setting is
defective.
Check if over-speed parameter setting
value is too low.
Correctly set over-speed
parameter setting (P2-34).
: Abnormal pulse control command
Potential Cause Checking Method Corrective Actions
Pulse command
frequency is higher
than rated input
frequency.
Use pulse frequency detector to measure
input frequency.
Correctly set the input pulse
frequency.
: Excessive deviation
Potential Cause Checking Method Corrective Actions
Maximum deviation
parameter setting is
too small.
Check the maximum deviation
parameter setting and observe the
position error value when the motor is
running.
Increases the parameter
setting value of P2-35.
Gain value is too
small.
Check for proper gain value. Correctly adjust gain value.
Torque limit is too
low.
Check torque limit value.
Correctly adjust torque limit
value.
There is an overload. Check for overload condition.
Reduce external applied load
or re-estimate the motor
capacity.
Revision January 2011 10-9
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
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