Latching

• Menu: 4.9.75-5.1-1
• Index: 8704.5[0]

Description

When a safety sub-function is activated via the safe digital input F-DI, the lock prevents the safety sub-function from being deactivated by a signal change at the safe digital input (from signal state 0 to signal state 1). The safe digital input remains locked until it is unlocked by one of the following methods:

• Via another safe digital input that is parameterized to Unlatch F-DI or to Unlatch F-DI and acknowledge faults.
• If the safe digital input parameterized to the unlock function permanently has the signal state 1, a warning is issued after 20 s.
• Via the bit Unlock F‑DI in the safe process output data

A locked safe digital input remains in locked state – including every time the safety option is activated – until an unlocking function is executed.

If one of the following functions/safety sub-functions is assigned to the safe digital input, the lock function must not be activated:

• All acknowledgment functions and unlock functions
• Position – SLI increment enable
• Brake test – SBT clearance
• Muting
• Test mode

DefaultSetting

Not active