User's Manual

8 Rockwell Automation Publication 440G-UM004C-EN-P - August 2020
Chapter 1 Product Overview
Guard Locking on Power to Release Versions
With a Power to Release switch, the locking bolt extends when the guard is
closed with the actuator inserted in the switch and a lock command is issued to
the switch:
Guard Locking on Power to Lock Versions
With a Power to Lock switch, the locking bolt extends when the guard is closed
with the actuator inserted in the switch and a lock command is issued to the
switch:
Assembly Overview
Table 2 - Lock Command
Mode Description
OSSD The lock signal (pin 5) is connected to 0V DC
GuardLink® A lock command is issued to the switch on the CLU signal from a GuardLink safety master.
IMPORTANT If power is removed from a Power to Release switch in the locked position, the
locking bolt remains in its extended position (switch locked). Use the auxiliary
release to unlock the switch.
ATTENTION: Under normal operating conditions, the locking bolt does not extend in
the absence of the actuator. The only exception is when power is removed from a
switch in the first 4 seconds of the start-up sequence. In this case, the bolt does
extend. If the guard door is closed when the start-up sequence is interrupted, the
guard door is locked. Use the auxiliary release to unlock the switch.
Table 3 - Lock Command
Mode Description
OSSD The lock signal (pin 5) is connected to 24V DC
GuardLink A lock command is issued to the switch on the CLU signal from a GuardLink safety master.
IMPORTANT If power is removed from a Power to Lock switch or a fault occurs while in the
locked position, the bolt retracts and the switch unlocks.
ATTENTION: Under normal operating conditions, the locking bolt does not extend in
the absence of the actuator. The only exception is when power is removed from a
switch in the first 4 seconds of the start-up sequence. In this case, the bolt does
extend. If the guard door is closed when the start-up sequence is interrupted, the
guard door is locked. Use the auxiliary release to unlock the switch.
Actuator
LINK and DEVICE
status indicators