Chapter 10 Troubleshooting
: Pre-overload warning
Potential Cause Checking Method Corrective Actions
The drive is going to
overload.
1. Check the load condition of the servo
motor and drive.
2. Check the setting value of P1-56.
Check whether the setting value of P1-
56 is too small.
1. Please refer to the correction
actions of AL006.
2. Increase the setting value of
P1-56 or set P1-56 to 100
and above.
: Encoder initial magnetic field error
Potential Cause Checking Method Corrective Actions
The magnetic field
of the encoder U, V,
W signal is in error.
1. Check if the servo motor is properly
grounded.
2. Check if the encoder signal cables are
placed in separate conduits from the
cables connected to R, S, T and U, V, W
terminals to prevent the interference.
3. Check if the shielded cables are used
when performing encoder wiring.
If the error does not clear after
each checking is done, please
contact your distributor for
assistance or contact with
Delta.
: Encoder internal error
Potential Cause Checking Method Corrective Actions
The internal memory
of the encoder is in
error. An encoder
counter error
occurs.
1. Check if the servo motor is properly
grounded.
2. Check if the encoder signal cables are
placed in separate conduits from the
cables connected to R, S, T and U, V, W
terminals to prevent the interference.
3. Check if the shielded cables are used
when performing encoder wiring.
1. Please connect the
grounding (green color) of
U, V, W terminal to the
heatsink of the servo drive.
2. Ensure that the encoder
signal cables are placed in
separate conduits from the
cables connected to R, S, T
and U, V, W terminals to
prevent the interference.
3. Please use shielded cables
for Encoder wiring.
4. If the error does not clear
after all the above actions
are done, please contact
your distributor for
assistance or contact with
Delta.
Revision January 2011 10-13
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
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