Inovance SV670P Series - Page 41

Description of Fault Codes
‑40‑
Cause
Confirming Method
Solution
1. The encoder cable
connections are incorrect or
loosened.
Check the encoder cable
connection. Check whether
ambient vibration is too
large, which loosens the
encoder cable and even
damages the encoder.
Connect the cables again
according to the correct
wiring diagram. Connect the
cables again and ensure
encoder terminals are
connected securely.
2. The servo drive is faulty.
The fault persists after the
servo drive is restarted.
Replace the servo drive.
● E150.0: STO safety state
Cause:
The STO input protection applies (safety state).
Cause
Confirming Method
Solution
STO is effective.
1. Check whether the STO
function is activated.
There is no need to take any
corrective actions. After the
STO terminal is back to
normal, clear the fault using
the fault reset function.
2. Check whether the STO
power supply is normal.
Check whether the 24 V
power supply for the STO is
stable. Tighten the cables
that are loose or
disconnected.
3. The fault persists after
preceding causes are
rectified.
Replace the servo drive.
● E150.1: STO input abnormal
Cause:
The single‑channel input of STO is ineffective.
Cause
Confirming Method
Solution
1. The STO power supply is
abnormal.
Check whether the STO
power supply is normal.
Check whether the 24 V
power supply for the STO is
stable. Tighten the cables
that are loose or
disconnected.
2. The input resistor is
abnormal.
After STO is triggered, only
one STO signal is sent to
MCU after the 24 V power
supply is cut off due to input
resistor drift.
Replace the servo drive.
3. STO is ineffective
The fault persists after
preceding causes are
rectified.
Replace the servo drive.
● E150.2: Buffer 5 V voltage detection error