Inovance SV670N Series - Page 75

Description of Fault Codes
‑74‑
● E760.0: Encoder overtemperature
Cause:
The temperature of the absolute encoder is too high.
Cause
Confirming Method
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
Cause:
Cause
Confirming Method
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
Cause
Confirming Method
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
Cause
Confirming Method
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
Cause
Confirming Method
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.
● E770.3: BISS communication protocol timeout
Cause
Confirming Method
Solution
BISS fully closed‑loop
external loop encoder
communication timeout
● Check the wiring.
● Check whether H0F.28,
H0F.29, and H0F.30 are set
properly.
● Check the wiring.
● Set H0F.28, H0F.29 and
H0F.30 according to the
specifications of the BISS
encoder.
● E770.4: BISS communication CRC error