Description of Fault Codes
‑70‑
● E760.0: Encoder overtemperature
Description:
The temperature of the absolute encoder is too high.
Cause
Troubleshooting
Solution
The temperature of the
absolute encoder is too
high.
Measure the encoder or
motor temperature.
Switch off the S‑ON signal to
wait for the encoder to cool
down.
● E765.0: Nikon encoder over‑temperature or overspeed
Description:
Encoder over‑temperature or overspeed
Cause
Troubleshooting
Solution
Motor overtemperature
Check if the ambient
temperature or the average
load rate is too high.
Switch off the S‑ON signal to
wait for the encoder to cool
down.
● E770.0: Fully‑closed input phase A wire breakage
Description:
Fully‑closed phase A input differential voltage wire breakage.
Cause
Troubleshooting
Solution
Fully‑closed phase A input
differential voltage wire
breakage
Measure the phase AB
differential voltage to check
if it is below 2.5 V.
Adjust the fully‑closed loop
phase A input voltage.
● E770.1: Fully‑closed input phase B wire breakage
Description:
Fully‑closed phase B input differential voltage wire breakage.
Cause
Troubleshooting
Solution
Fully‑closed phase B input
differential voltage wire
breakage
Measure the phase B
differential voltage to check
if it is below 2.5 V.
Adjust the fully‑closed loop
phase B input voltage.
● E770.2: Fully‑closed input phase Z wire breakage
Description:
Fully‑closed phase Z input differential voltage wire breakage.
Cause
Troubleshooting
Solution
Fully‑closed phase Z input
differential voltage wire
breakage
Measure the phase Z
differential voltage to check
if it is below 2.5 V.
Adjust the fully‑closed loop
phase Z input voltage.
● EA33.0: Encoder read/write check error
Description:
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