Inovance SV670N Series - Page 41

Description of Fault Codes
‑40‑
● E150.0: STO safety state applied
Cause:
The STO input protection applies (safety state).
Cause
Confirming Method
Solution
Two 24 V inputs are
disconnected
simultaneously, triggering
the STO function.
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 state abnormal
Cause:
The single‑channel input of STO is ineffective.
Cause
Confirming Method
Solution
1. STO input 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.STO 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
Cause:
The MCU monitors the 5 V power supply of the PWM Buffer to detect whether
overvoltage or undervoltage occurs. If the voltage is abnormal, E150.2 occurs.
Cause
Confirming Method
Solution
The 5 V voltage supplied to
the STO Buffer is abnormal
due to undervoltage or
overvoltage.
Check whether the fault can
be removed by a restart. If
not, the 5V voltage supplied
to the Buffer is abnormal.
Replace the servo drive.