Muting safe process output data (muting F-PO)

WARNING

The active "Muting F-PO" function deactivates the safety sub-functions. This can cause the system to start up immediately.

Risk of death or severe 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 starting the emergency mode with 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.

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

• Another fault is present or has been detected.
• A fault is acknowledged.
• 1 to 60 minutes after activation via 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.