Acceptance Test Reports; Acceptance Test Procedure; Use - ABB ACS560 Hardware Manual

154 Safe torque off function
An authorized person is an individual with authorization from the machine builder or end
user to carry out, report and sign off the safety function validation / acceptance testing on
behalf of the machine builder or end user.
￭

Acceptance test reports

Signed acceptance test reports must be stored in the logbook of the machine. The report
shall include documentation of start-up activities and test results, references to failure reports
and resolution of failures. Any new acceptance tests performed due to changes or
maintenance shall be logged into the logbook.
￭

Acceptance test procedure

After wiring the Safe torque off function, validate its operation as follows.
Action
WARNING!
Follow the Safety instructions (page
or death, or damage to the equipment.
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 themotor shaft is at a standstill.
Ensure that the drive operates as follows:
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. For the description of the warning,see ACS560 standard
control program firmware manual (3AXD50000044997[English]).
• 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 motorruns normally.
Document and sign the acceptance test report which verifies that the safety function is safe and
accepted for operation.

Use

1. Open the activation switch, or activate the safety functionality that is wired to the STO
connection.
2. STO inputs on the drive control board de-energize, and the drive control board cuts off
the control voltage from the drive IGBTs.
3. The control program generates an indication as defined by parameter.
4. The motor coasts to a stop (if running). The drive will not restart while the activation
switch or safety relay contacts are open.
5. Deactivate the STO by closing the activation switch, or resetting the safety functionality
that is wired to the STO connection.
11). Ignoring the instructions can cause physical injury