Inovance IS620P Series - Er.834: AD Sampling Overvoltage; Er.835: High-Accuracy AD Sampling Fault; Er.a33: Encoder Data Abnormal

IS620P User Manual Chapter 6 Troubleshooting
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30. Er.834: AD sampling overvoltage
Cause:
•
The AI sampling value is greater than 11.5 V.
Cause Conrming Method Corrective Action
1. The AI voltage is too
high.
Measure the voltage input through AI
and check whether the AI sampling
voltage (H0B-21 or H0B-22) is greater
than 11.5 V.
Adjust the AI input voltage and
view the AI sampling voltage
until the AI sampling voltage
does not exceed 11.5 V.
2. The AI wiring
is incorrect or
interference exists.
Check the AI wiring according to the
correct wiring diagram.
Re-wire the AI with a STP cable
and shorten the cable length.
Increase the AI lter time
constant:
AI1 lter time constant: H03-51
AI2 lter time constant: H03-56
31. Er.835: High-accuracy AD sampling fault
Cause:
•
High-accuracy AD circuit suffers interference.
Cause Conrming Method Corrective Action
1. Interference exists on
the high-accuracy AI.
Check the AI wiring according to the
correct wiring diagram.
Re-wire the AI with a STP cable
and shorten the cable length.
32. Er.A33: Encoder data abnormal
Cause:
•
The encoder internal parameters are abnormal.
Cause Conrming Method Corrective Action
1. The serial encoder
cable breaks or becomes
loose.
Check the serial encoder wiring.
Check connection of the encoder
cable to see whether incorrect
connection, wire breaking, or poor
contact exists.
If the motor cables and the
encoder cable are bundled
together, separate them.
2. Serial encoder
parameters read-write
abnormal
If the fault remains after the servo
system is powered off and re-
powered on several times, it
indicates that the encoder is faulty.
Replace the servo motor.