ABB ACH580-01 Series, Hardware Manual

Page: 353 / 396

Safe torque off function 353
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Acceptance test procedure
After wiring the Safe torque off function, validate its operation as follows.
If a CPTC-02 module is installed, refer to its documentation.
Action
WARNING! Follow the Safety instructions , page 15 . If you ignore them,
injury or death, or damage to the equipment can occur.
Ensure that the drive can be run and stopped freely during start-up.
Stop the drive (if running), switch the input power off and isolate the drive from the
power line by a disconnector.
Check the Safe torque off circuit connections against the wiring diagram.
Close the disconnector and switch the power on.
Test the operation of the STO function when the motor is stopped.
• Give a stop command for the drive (if running) and wait until the motor shaft is at a
standstill.
Ensure that the drive operates as follows:
• Open the STO circuit. The drive generates an indication if one is defined for the
‘stopped’ state in parameter 31.22 (see the firmware manual).
• Give a start command to verify that the STO function blocks the drive’s operation.
The drive generates a warning. The motor should not start.
• Close the STO circuit.
• Reset any active faults. Restart the drive and check that the motor runs normally.
Test the operation of the STO function when the motor is running.
• Start the drive and ensure the motor is running.
• Open the STO circuit. The motor should stop. The drive generates an indication if
one is defined for the ‘running’ state in parameter 31.22 STO indication run/stop
(see the firmware manual).
• Reset any active faults and try to start the drive.
• Ensure that the motor stays at a standstill and the drive operates as described
above in testing the operation when the motor is stopped.
• Close the STO circuit.
• Reset any active faults. Restart the drive and check that the motor runs normally.