Muting safe process output data (muting F-PO)

WARNING

The active "Muting F-PO" function deactivates the encoder-dependent safety sub-functions (except STO). This can cause the system to start up immediately.

Severe or fatal injuries.

• Before activating the "Muting F-PO" function, the user must take organizational measures for the protection of personnel and machinery.

The "Muting safe process output data" function is activated by a 0 → 1 edge on a safe digital input F-DI or by starting the emergency mode using the keypad. The activated "Muting F-PO" function is signaled on the LED F-ERR by rapid yellow flashing. The "Muting F-PO" function has the following effects:

• Opening of the internal safe digital output F-DO_STO is suppressed due to the substitute values of the F-PO data.
• The fault responses of all safety sub-functions are suppressed.
• Activating the STO safety sub-function is still possible without any restrictions using a safe digital input F-DI.

The "Muting F-PO" function is automatically terminated in the following cases:

• Another fault (e.g. input fault) is present or has been detected.
• A fault is acknowledged.
• 1 to 60 minutes after activation via F-DI or the keypad. This time period is adjusted via the Maximum muting time parameter.
• 5 minutes after activation via emergency mode.
• Connection to the keypad is interrupted if the "Muting F-PO" function was activated using the keypad.

After automatic deactivation of the "Muting F-PO" function, all sources must revoke their activation prior to a new activation of the function.

Every time the "Muting F-PO" function finishes, the start inhibit is activated.