Testing the STO function

Before starting up the system, perform the following tests to ensure that the STO function is working properly. Here, the configured enable source must be taken into account in accordance with the settings in P1-15.

• 1. Initial situation:
• The inverter is not enabled. Therefore, the motor is in an idle state.
• The STO inputs are no longer energized ("Inhibit" displayed on the inverter display).
• Enable the inverter. Since the STO inputs continue to not be energized, "Inhibit" continues to be displayed on the inverter display.
• 2. Initial situation:
• The inverter is enabled. The motor rotates.
• Disconnect the STO inputs from the power supply.
• Check whether "Inhibit" is displayed on the inverter display, the motor is stopped, and the operation runs in accordance with sections Safe disconnection function (STO) and STO status and diagnostics.