EUCHNER MGB-LxxB-PNA-xxx (PROFINET) with Data Structure Type A - Manual (Page 33)

Operating Instructions Safety System MGB-L..B-PNA-... (PROFINET)
33
Troubleshooting
Latching fault when actuating the escape release
In order to achieve monitoring of the locking device in category 4, PL e according
to EN ISO 13849-1, an internal monitoring logic system is integrated into every
locking module.
Result: The MGB system enters into a latching fault when the escape release is
actuated (refer to the System status table on page 31).
Note:
The system might not enter into a latching fault if the escape release is actuated
very slowly.
Fault reset
Proceed as follows:
1. Acknowledge fault via output bit O18.
2. Close safety guard if necessary and switch guard locking on.
¨ The system is in normal mode again.
Guar
d position
Position of the bolt tongue Guar
d locking
Input bit SI3 Input bit SI4 Input bit SI5 Input bit I10 Input bit I17 Input bit I18 Input bit I24
LED indicator
State
DIA 1 (gr
een)
POWER DIA 2 (r
ed)
ST
ATE (yel
-
low)
X X X off off off off on on X 7 x
Plausibility test erroneous (e.g. after actuation of the
escape release)*
LED not illuminated
LED illuminated
10 Hz (8 s) LED flashes for 8 seconds at 10 Hz
3 x LED flashes three times
X Any state