Reer MZERO Installation, Use And Maintenance Manual page 73

Figure 32 - Example of feedback of the status of a door/gate connected to the guard lock. The signal
received by the module is processed by the "Guard Lock" operator.
"Unlock_cmd" input
The "Unlock_cmd" input detects the command sent by the user to lock or unlock the guard lock.
In detail:
➢ Request to unlock: the Unlock_cmd signal must be set to LL1
➢ Request to lock: the Unlock_cmd signal must be set to LL0
The command signal may be sent via a key, for example.
"Output" out
This signal indicates the information shown in the table below, depending on its value.
Output
Output
8541403 • 19/07/2021 • Rev.1
STAND ALONE PROGRAMMABLE SAFETY CONTROLLER
Value
•
LL1
•
•
LL0
•
Meaning
Door/Gate closed
Guard lock locked
User request to unlock the guard lock
Error condition
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