Inovance SV820N Series, Manual, Page: 107 / 181

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5 Troubleshooting
5
■ E3.650: Heatsink overheat
Cause:
The temperature of the servo drive power module is higher than the over-temperature protection threshold.
Probable Cause Confirming Method Corrective Action
1. The ambient
temperature is too high. Measure the ambient temperature
Improve the cooling conditions for
the servo drive to reduce the ambient
temperature.
2. The servo drive is
powered off and
powered on several
times to reset the
overload fault.
View the fault records
(set 200B-22h and view 200B-23h) and
check whether an overload fault/warning
(E3.610, E3.620, E3.630, E3.650) occurs.
Change the fault reset method. After
overload occurs, wait 30s and then perform
the reset operation. Increase the capacity
of the servo drive and servo motor,
increase acceleration/deceleration time,
and reduce the load.
3. The fan is damaged.
Observe whether the fan works during
running.
Replace the servo drive.
4. The installation direction
and clearance away
from other servo drives
are improper.
Check whether installation of the servo
drive is proper.
Install the servo drive according to the
requirements.
5. The servo drive is faulty. The fault persists after restart and 5
minutes after powering off.
Replace the servo drive.
■ E3.731: Encoder battery failed
Cause:
The battery voltage of the absolute encoder is lower than 3.0 V.
Probable Cause Confirming Method Corrective Action
The battery is not connected
during power-off.
Check whether the battery is connected
during power-off.
Set 200D-15h=1 to remove the fault.
The battery voltage of the
encoder is too low.
Measure the battery voltage. Use a new battery of matching voltage.
■ E3.733: Encoder multi-turn counting error
Cause:
Encoder multi-turn counting error
Probable Cause Confirming Method Corrective Action
The encoder is faulty.
Set 200D-15h=2 to remove the fault. E3.733 persists after power-
on again.
Replace the motor.
■ E3.735: Encoder multi-turn counting overflow
■ E3.740: Encoder interference
Cause:
The encoder communication has been disturbed, resulting in an error in the communication process.
Probable Cause Confirming Method Corrective Action
1. The encoder
wiring is
incorrect.
Check the encoder wiring.
Reconnect cables according to
the correct wiring diagram.