120
120
Figure 4: Min. distance for multiple safety switches
Alignment
The safety locking device can be mounted in any alignment.
Figure 5: Possible alignment of the safety locking device
4.4
Integrating into the electrical control
Switch-on commands which bring about a dangerous state of the machine must not be
enabled until the protective device is closed and the lock is activated. The lock must
not be deactivated until the dangerous state has ended. Depending on the safety con‐
cept, the signal is analyzed by, e.g., safety relays or a safety controller.
4.4.1
Lock
The logic to generate a locking command with the control changes depending on the
product variant selected.
Variant according to “power to release” principle
To lock, make sure there is no voltage at the “lock input” contact (locking command
active).
To unlock, apply 24 V DC voltage at the “lock input” contact (locking command inac‐
tive).
For variants according to “power to lock” principle
PROJECT PLANNING
4
8019972/2016-07-19 | SICK
O P E R A T I N G I N S T R U C T I O N S | TR10 Lock
13
Subject to change without notice