Commissioning, Operation, and Maintenance
‑86‑
Step
Action
Result
5
Switch the disconnector off and then switch the input power
supply on.
Test the STO1 or STO2 signal when the system stops:
1. Awake the STO function by disconnecting both the STO1
and STO2 signals. Check whether the AC drive enters the
STO activated state and displays STO.
2. Send a start command to the AC drive. Ensure that the AC
drive does not respond and the motor stays standstill.
3. The STO1 and STO2 channel signals are restored and the
system is restored to the normal state according to the
setting of F9‑79. Run the ON/RUN command on the AC drive,
and check whether the motor operates properly.
Test the STO1 channel signal when the system stops:
1. Awake the STO function by disconnecting the STO1
channel input signal (low state or open‑circuit). Check
whether the AC drive displays the fault code "E047.2".
2. Send a start command to the AC drive. Ensure that the AC
drive does not respond and the motor stays standstill.
The STO1 channel signal is restored and the fault is cleared.
Run the ON/RUN command on the AC drive, and check
whether the motor operates properly.
Test the STO2 channel signal when the system stops:
1. Awake the STO function by disconnecting the STO2
channel input signal (low state or open‑circuit). Check
whether the AC drive displays the fault code "E047.2".
2. Send a start command to the AC drive. Ensure that the AC
drive does not respond and the motor stays standstill.
The STO2 channel signal is restored and the fault is cleared.
Run the ON/RUN command on the AC drive, and check
whether the motor operates properly.
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