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.

Death or serious injury.

• Before activating the "Muting F-PO" function, the user must take organizational measures for the protection of personnel and machinery.
• The "Muting F-PA" function must be activated by the machine operator.

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 error is present or has been detected.
• An error 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.