This is the web edition of the original ‎⮫ AC500-S safety user manual, version 1.3.2. This web edition is provided for quick reference only. The original safety user manual must be used to meet functional safety application requirements.

This example uses the following safety functions:

• By pushing an emergency stop button all hazardous movements must be stopped (via SF_EmergencyStop). Emergency stop has the highest priority. After releasing the E-Stop push button, a reset via S0_Reset is required.

• By pressing both push buttons of the two-hand control, the safety output is activated. The release of any of the two-hand push buttons disables the safety output and stops the dangerous motion via the contactors K1 and K2 (via SF_TwoHandControlTypeII).

• The initial state and the operational state of the connected contactors K1 and K2 are monitored and if an error is detected, the safety output cannot become operational (via SF_EDM).

• After power-on of the safety or functional application, or after an emergency stop condition, the two-hand control must be released and re-operated in order to activate the safety output again (via SF_OutControl). In order to guarantee this for the functional application restart, the process signal from the functional application is connected to the Activate input of the two hand control function block THC_S2_S3 (If the application process is restarted while the two hand control is activated, the FB goes to the state C003 signaling an error that both buttons are pressed at the activation, prohibiting a restart.).