IS810N-INT Series Servo System User Manual (Brief) Chapter 7 Troubleshooting
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E1.650: Heatsink overheat
Cause:
The temperature of the servo drive power module is higher than the over-temperature
protection threshold.
Probable Cause Conrming 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 (E1.610, E1.620, E1.630,
E1.650) 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
10 minutes after powering off.
Replace the servo drive.
E1.661: NTC cable breaking
Cause:
The drive temperature detection circuit is abnormal.
Probable Cause Conrming Method Corrective Action
The drive
temperature
detection circuit is
abnormal.
Check whether H0B-27 (Drive temperature)
of a corresponding axis remains at 12°C.
Replace the servo drive.
E1.731: Encoder battery failed
Cause:
The battery voltage of the absolute encoder is lower than 3.0 V.
Probable Cause Conrming 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.
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