EUCHNER MGB-LxxB-PNA-xxx (PROFINET) with Data Structure Type A - Manual (Page 7)

Operating Instructions Safety System MGB-L..B-PNA-... (PROFINET)
7
Version MGB-L1B-..., guard locking by spring force
The locking arm is kept in locked position by spring force and is unlocked by
solenoid force (closed-circuit current principle).
Version MGB-L2B-..., guard locking by solenoid force
The locking arm is kept in locked position by solenoid force and unlocked by spring
force when the solenoid is switched off (open-circuit current principle).
Warning!
Ì The safety guard can be opened immediately in the event of interruption of
the solenoid power supply!
Ì Usage only in special cases after strict evaluation of the accident risk (see
EN 1088:1995+A2:2008, section 5.5)!
Typical case: If the risk of accidental locking inside a safety guard during a power
failure is higher than the risk of ineffective guard locking.
Control of the guard locking
From MGB version V2.36.4, the factory ensures that control is possible only from
the safe control area. Here, it was determined in the firmware that only bit S01
is evaluated.
By changing the parameters in the configuration tool of your control system, it can
be set that bit 016 is evaluated as well.
Important!
Control of the guard locking via the safe control area does not provide increased
safety, as the device-internal control of the guard locking is only of single-channel
design.
Important!
The following functions depend on the MGB version, the version of the GSD file
and the settings made there.
Compare the specified versions with those on your device and your GSD file. The
version number of your MGB can be found on the type plate (format: V X.XX.X).
MGB version GSD version Continue in section ...
up to and including V 2.35.4 ..._110026-20110725 Case A
..._110026-20110815 Case A
from V 2.36.4 ..._110026-20110725 Case B
..._110026-20110815 Case C