Chapter 6 Troubleshooting                                                                                            IS620P User Manual                                                 
- 132 -
14. Er.208: FPGA system sampling operation timeout
Cause: 
 
•
The current sampling chip or related parameter is abnormal.
 
•
The communication of the encoder times out.
Cause Conrming Method Corrective Action
1. The FPGA system 
sampling operation times 
out
 
•
If the fault remains after the drive 
is powered off and powered on 
again several times, the servo 
drive is faulty.
Replace the servo drive.
2. The communication of 
the encoder times out.
 
•
Contact Inovance for technical 
support.
Contact Inovance for technical 
support.
15. Er.210: Output-to-ground short-circuit
Cause: 
 
•
The drive detects motor phase current or bus voltage abnormal during self-check at power-
on. 
Cause Conrming Method Corrective Action
1. The power output 
cables (UVW) of the 
servo drive are short-
circuited to ground.
 
•
Disconnect the UVW cables from 
the motor, and measure whether 
the motor UVW cables are short-
circuited to ground. 
Connect the cables again or 
replace them.
2. The motor is short-
circuited to ground.
 
•
Measure the insulation resistance 
between the UVW of the servo 
drive and the ground cable (PE) 
and check whether the insulation 
resistance is MΩ-level.
Replace the motor.
3. The servo drive is 
faulty.
 
•
Remove the power cables from 
the servo drive. The fault remains 
after the drive is powered off and 
powered on again several times.
Replace the servo drive.
16. Er.220: Internal fault