Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
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(Translation of the original operating instructions) 2500233-01-05/19
6.2. Guard locking for version MGB2-L1
(Guard locking actuated by spring force and released by power-ON)
Activating guard locking:
close guard; no voltage at the solenoid.
Releasing guard locking:
apply voltage to the solenoid.
The spring-operated guard locking functions in accordance with the closed-circuit current principle. If the voltage is interrupted
at the solenoid, the guard locking remains active and the guard cannot be opened directly.
Important!
If the guard is open when the power supply is interrupted and is then closed, guard locking is activated.
This can lead to persons being locked in unintentionally.
As long as the guard locking is closed, the bolt tongue cannot be pulled out of the locking module and the guard is locked.
If voltage is applied to the guard locking solenoid, the guard locking is opened and bolt tongue is released. The guard can
be opened.
6.3. Guard locking for version MGB2-L2
(Guard locking actuated by power-ON and released by spring force)
Important!
Use as guard locking for personnel protection is possible only in special cases, after strict assessment
of the accident risk (see EN ISO 14119:2013, section 5.7.1)!
Activating guard locking:
apply voltage to the solenoid.
Releasing guard locking:
disconnect voltage from the solenoid.
The magnetically actuated guard locking operates in accordance with the open-circuit current principle. If the voltage is
interrupted at the solenoid, the guard locking is released and the guard can be opened directly!
The guard can be opened as long as no voltage is applied to the guard locking solenoid.
If voltage is present at the guard locking solenoid, the guard locking is held in the locked position and the guard is locked.
