Chapter 9 Troubleshooting ASDA-B2
9-8 Revision September 2013
: Input power phase loss
Potential Cause Checking Method Corrective Actions
Control power supply is
in error.
Check the power cable and connections
of R, S, and T. Check whether the power
cable is loose or the possible loss of
phase on input power.
If the fault does not clear even
when the three-phase power is
connected correctly, please
contact your distributor for
assistance or contact with Delta.
: 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 ALE06.
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 heat sink 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.
VARITEL INGENIERIA ELECTRONICA S.A.
info@varitel.com - www.varitel.com - Tel. (54) 11-4243-1171 / Fax: (54) 11-4292-7545
Manuel Baliña 456, Lomas de Zamora (B1832CCJ) Buenos Aires, Argentina.
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