System Manual Safety System MGB-AR in Combination with a Locking Module
5
Typical system times
Ready delay
After switching on, the unit carries out a self-test for 8 s. The system is ready for
operation only after this time.
Risk time according to EN 60947-5-3
If the guard locking is no longer effective, the safety outputs OA and OB on the
locking module are deactivated after a maximum of 00 ms.
Difference time
The safety outputs O
A
and O
B
switch with a minor time offset. They have the same
signal state at the latest after a difference time of 10 ms.
Max. time delay
From the control command to deactivate the guard locking to the shut down of
the safety outputs the maximum delay is 500 ms.
Important!
The system times given are maximum values.
Figure 20: Typical system times for operation as a separate system
Figure 21: Typical system times for operation in a switch chain
t
0
= t
0
+ 150 ms
t
off
t
0
=
+ 300 ms
t
off
t (ms)
t
0
t
off
Short-circuit or cross-circuit
on OA/OB or internal fault
Missing signal IA/IB
Locking arm no longer
in locked position
Non-identical input state
on IA/IB
= Safety outputs active
= Switch-off time
= Fault time/event
t
0
= t
0
+ 250 ms
t
off
t
0
=
+ 400 ms
t
off
t (ms)
t
0
t
off
Short-circuit or cross-circuit
on OA/OB or internal fault
Missing signal IA/IB
Non-identical input state
on IA/IB
= Safety outputs active
= Switch-off time
= Fault time/event
Locking arm no longer
in locked position
