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Rockwell Automation Publication 442G-UM002A-EN-P - December 2016
Chapter 1
General Description
Power-to-Release
For Power-to-Release versions, the locking arm is kept in the locked position by
spring force and unlocked by solenoid force when power is applied to the
solenoid.
Guard locking is activated when the guard is in the closed position and power is
removed from the solenoid.
Guard locking is deactivated when voltage is applied to the solenoid.
Power-to-Lock
For Power-to-Lock versions, the locking arm is kept in the locked position by
solenoid force when power is applied to the solenoid and unlocked by spring
force when power is removed from the solenoid.
Guard locking is activated when the guard is in the closed position and power is
applied to the solenoid.
Guard locking is deactivated when voltage is removed from the solenoid.
IMPORTANT
Safety output signal Unlock is turned off.
IMPORTANT
Safety output signal Unlock is turned on.
ATTENTION:
If the safety guard is open when power is removed from the
solenoid and the guard is then closed, guard locking is activated. This can
lead to persons being locked in unintentionally.
IMPORTANT
Safety output signal Unlock is turned off.
IMPORTANT
Safety output signal Unlock is turned on.
ATTENTION:
In the event of an unintended loss of power, guard locking will
be deactivated. Power-to-Lock versions should only be used for personal
protection if minimum safe distance is provided in accordance with
EN ISO 13855.
