Delta ASD-B2-0121-B User Manual page 279

Chapter 10 Troubleshooting
: Serial communication time out
Potential Cause
Setting value in time
out parameter is not
correct.
Not receiving
communication
command for a long
time.
: Reserve
: Input power phase loss
Potential Cause
Control power supply
is in error.
: Pre-overload warning
Potential Cause
The drive is going to
overload.
: Encoder initial magnetic field error
Potential Cause
The magnetic field of
the encoder U, V, W
signal is in error.
10-8
Checking Method
Check communication time out
parameter setting.
Check whether communication cable is
loose or broken.
Checking Method
Check the power cable and
connections of R, S, T. Check whether
the power cable is loose or the
possible loss of phase on input power.
Checking Method
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 to small.
Checking Method
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.
Corrective Actions
Correctly set P3-07.
Tighten the communication
cable, make sure the
communication cable is not
damaged and ensure all wiring
is correct.
Corrective Actions
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.
Corrective Actions
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.
Corrective Actions
If the error does not clear after
each checking is done, please
contact your distributor for
assistance or contact with
Delta.
Revision June 2010