Verifying the Safety Function STO

Operation with Safety Function STO

If you want to use the safety function STO, carry out the following steps:

Power off the power stage supply and the 24 Vdc control supply:

oVerify that the signal wires at the inputs (STO_A) and (STO_B) are isolated from each other. The two signal wires must not be electrically connected.

Power on the power stage supply and the 24 Vdc control supply:

oEnable the power stage without starting a motor movement.

oTrigger the safety function STO.

If the power stage is now disabled and the error message 1300 is indicated, the safety function STO was triggered.

If a different error message is indicated, the safety function STO was not triggered.

oDocument all tests of the safety function in your acceptance protocol.

Operation without Safety Function STO

If you do not want to use the safety function STO:

oVerify that the inputs STO_A and STO_B are connected to +24VDC.