Changing the actuating direction (here: from right to left) 19
Controls and indicators 21
Protection against environmental effects 22
Electrical connection 22
Connections on bus module 22
Setup 24
Integrating into PROFINET and PROFIsafe 24
Replacement of an MGB system without programming device 25
System reset to factory settings 25
Teach-in operation (only MGB unicode) 26
Mechanical function test 26
Electrical function test 27
PROFINET data bytes (data blocks for unsafe functions) 28
Data blocks for MGB modules 29
Data blocks of individual functions at a glance 31
PROFIsafe data bytes (data blocks for safe functions) 34
Diagnostic messages of the MGB system 36
PROFINET alarms 37
Fault in stacklight module 37
System status table
Technical data 39
Troubleshooting 40
Latching fault when actuating the escape release 40
Fault reset 40
Service 41
Inspection and service 41
Declaration of conformity 42
LEDs on interlocking/locking module38
2
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Scope
This manual is valid for all MGB-PN with data structure type B from version number
V3.22.0.
Correct use
MGB-L0
The safety system MGB-L0 is an electromagnetic interlocking device without guard
locking.
The system comprises at least one interlocking module MGB-L0 and one handle
module MGB-H...
In combination with a safety guard, this safety component prevents dangerous
machine movements from being performed for as long as the safety guard is
opened. A stop command is triggered if the safety guard is opened during the
dangerous machine function.
For the control system, this means that
Ì starting commands which cause hazardous situations must become active only
when the safety guard is in the protective position.
MGB-L1/MGB-L2
The safety system MGB-L1 / MGB-L2 is an electromagnetic interlocking device
with guard locking and guard lock monitoring.
The system comprises at least one locking module MGB-L1 / MGB-L2 and one
handle module MGB-H...
In combination with a safety guard and the machine control, the MGB system prevents the safety guard from being opened while a dangerous machine movement
is being performed.
For the control system, this means that
Ì starting commands which cause hazardous situations must become active
only when the safety guard is in protective position and the guard locking is in
locked position.
Ì The locked position of the guard locking must be released only when the haz-
ardous situation is no longer present.
MGB-L0/MGB-L1/MGB-L2
The interlocking module MGB-L0B-PN.-... and locking module MGB-L1B-PN.-... /
MGB-L2B-PN.-... are operated as an IO device in the PROFINET (PROFIsafe).
Before safety components are used, a risk assessment must be performed on the
machine, e.g. in accordance with
Ì EN ISO 13849-1, Safety of machinery. Safety related parts of control systems.
General principles for design
Ì EN ISO 12100, Safety of machinery – Basic concepts - General principles for
design - Risk assessment and risk reduction.
Correct use includes compliance with the relevant requirements for installation
and operation, in particular
Ì EN ISO 13849-1, Safety of machinery. Safety related parts of control systems.
General principles for design
3
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Ì EN 1088, Safety of machinery. Interlocking devices associated with guards.
Principles for design and selection
Ì EN 60204-1, Safety of machinery. Electrical equipment of machines. General
requirements.
The safety system MGB can only be combined with the intended modules in the
MGB system family.
On the modification of system components, EUCHNER provides no warranty for
safe function.
The customer is responsible for the safe overall function, especially for the safe
integration into the PROFIsafe environment.
Important!
Ì The user is responsible for the integration of the device into a safe overall
system. For this purpose, the overall system must be validated, e.g. in accordance with EN ISO 13849-2.
Ì Correct use requires observing the permissible operating parameters (see
Technical data).
Ì If a product data sheet is included with the product, the information on the
data sheet applies in case of discrepancies with the operating instructions.
Ì In the estimation of the PL for the overall system, a maximum value of
100 years can be assumed for the MTTFd according to the limit value in
EN ISO 13849-1:2008, section 4.5.2. This corresponds to a minimum value
for the PFHd of 2.47x10-8/h.
Exclusion of liability and warranty
In case of failure to comply with the conditions for correct use stated above, or
if the safety instructions are not followed, or if any servicing is not performed as
required, liability will be excluded and the warranty void.
4
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
General safety instructions
Safety switches fulfill personal protection functions. Incorrect installation or tampering can lead to fatal injuries to personnel.
Check the safe function of the safety guard particularly
Ì after any setup workÌ after the replacement of an MGB componentÌ after an extended period without useÌ after every fault
Independent of these checks, the safe function of the safety guard should be
checked at suitable intervals as part of the maintenance schedule.
Warning!
Loss of safety function in the event of incorrect connection or incorrect use.
Ì Safety switches must not be bypassed (bridging of contacts), turned away,
removed or otherwise rendered ineffective.
On this topic pay attention in particular to the measures for reducing the possibility of bypassing from EN 1088:1995+A2:2008, section 5.7.
Ì The switching operation is only allowed to be triggered by the intended han-
dle module MGB-H... that is positively fastened to the safety guard.
The device is only allowed to be installed and placed in operation by authorized
personnel
Ì who are familiar with the correct handling of safety components Ì who are familiar with the applicable EMC regulationsÌ who are familiar with the applicable regulations on health and safety and ac-
cident prevention
Ì who have read and understood the operating instructions.
Important!
Prior to use, read the operating instructions and keep these in a safe place.
Ensure the operating instructions are always available during mounting, setup
and servicing. EUCHNER cannot provide any warranty in relation to the readability
of the CD for the storage period required. For this reason you should archive
a printed copy of the operating instructions. You can download the operating
instructions from www.EUCHNER.de.
5
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Function
Interlocking module MGB-L0.B-PN.
Together with a handle module, the interlocking module makes it possible to interlock movable safety guards. The combination also serves as a mechanical door
stop at the same time.
The following switch-on condition applies to safety bit SI1.0 ( see also System
status table and section PROFIsafe data bytes):
The interlocking module detects the position of the safety guard and the position
of the bolt tongue.
The bolt tongue in the handle module is moved into and out of the interlocking
module by actuating the door handle.
Locking modules MGB-L1.B-PN. and MGB-L2.B-PN.
Important!
Together with a handle module, the locking module makes it possible to lock
movable safety guards. The combination also serves as a mechanical door stop
at the same time.
To operate the device as a guard lock according to EN 1088, the signals for
door position (T=PROFIsafe bit SI0.2), bolt position (R= PPOFIsafe bit SI0.3)
and guard lock monitoring (Z= PROFIsafe bit SI0.4) must be polled in a logical
AND operator. This operator is already implemented in the PROFIsafe data block
(safety bit SI1.0).
As an alternative, you can also link the bits SI0.2 to SI0.4 individually to your
control system.
The following switch-on condition applies to safety bit SI1.1 ( see also System
status table and section PROFIsafe data bytes):
Ì Safety guard closed (T)Ì Bolt tongue inserted into locking module (R)Ì Locking arm in locking position (guard lock monitoring) (Z)
The locking module detects the position of the safety guard and the position of
the bolt tongue. The position of the locking arm is also monitored.
The bolt tongue in the handle module is moved into and out of the locking module
by actuating the door handle.
When the bolt tongue is fully inserted in the locking module, the locking arm locks
the bolt tongue in this position. Depending on the version, this locking is by spring
force or solenoid force.
6
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Version MGB-L1B-...
The locking arm is kept in locked position by spring force and is unlocked by
solenoid force (closed-circuit current principle).
Version MGB-L2B-...
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
Important!
Important!
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 SO 0.0
is evaluated.
By changing the parameters in the configuration tool of your control system, it
can be set that bit O 0.0 (in the safe data block for the MGB evaluation module) is
evaluated as well (see description of the data blocks on page 30).
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.
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).
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Case A
You have an MGB with a version number of V 2.35.4 and a GSD file with a version
number of ..._110026-20110725 or older. Or you have an MGB with a version number of V 2.35.4 and a GSD file with a version number from ..._110026-20110815.
The guard locking can be controlled from the unsafe control area. The combination
with the more up-to-date GSD file allows a parameter to specify which bits are to
be used for control. However, the device does not support this function. In other
words, the setting in your configuration software remains ineffective.
8
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Case B
You have an MGB with a version number of V 2.36.4 and a GSD file with a version
number of ..._110026-20110725 or older.
The guard locking solenoid is controlled if
for MGB-L1...
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
System overview
Mounting plate
Escape release (optional)
(MGB-E...)
Handle module
(MGB-H...)
Evaluation module
(MGB-L...)
Bus module
(Profinet)
(MGB-B...)
Key:
1
LED indicator
2
Power supply
3
PROFINET connection
Note:
Depending on the version, additional
controls and indicators may be integrated
into the cover. See enclosed data sheet.
Figure 1: Components at a glance
Note: MGB-PN systems are completely factory configured. The configuration must not be changed subsequently. The illustrations in this section can
deviate from your system and serve only as examples. The configuration
of your MGB system can be found in the data sheet included with every
MGB system.
Bus module MGB-B-...-PN
1
2
3
Figure 2: Bus module MGB-B-...-PN (configuration example)
11
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Evaluation module MGB-L.-
Key:
1
LED indicator
2
Cover for mechanical release
3
Locking arm (only version with
guard locking)
4
Auxiliary marking for max. permit-
ted mounting distance
Note:
Depending on the version, additional
controls and indicators may be integrated into the cover. See enclosed
data sheet.
Key:
1
Door handle
2
Locking pins for housing cover
and handle adjustment
3
Lockout mechanism
4
Bolt tongue
Note:
Depending on the function, the handle
can feature additional functions
(second lockout mechanism, different handle, etc.). See enclosed data
sheet.
1
2
3
4
Figure 3: Evaluation module MGB-L.-
Handle module MGB-H-...
1
2
3
4
Figure 4: Handle module MGB-H-...
12
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
12345
Escape release MGB-E-... (optional)
Key:
1
Door handle
2
Setscrew
3
Cover
4
Actuation axis, length 118 mm (in-
cluded)
Alternatively:
Long actuation axis, length 250 mm
(order No. 106 761)
5
Protective sleeve
Note:
Depending on the version, a mounting
plate can be included. See enclosed data
sheet.
Figure 5: Escape release MGB-E-...
Dimension drawing
See enclosed data sheet
13
Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
Mechanical release
In the event of service, the guard locking can be released with the mechanical
release irrespective of the state of the solenoid (see Figure 6).
The locking screw must be screwed back in and sealed after use (for example with
sealing lacquer). Tightening torque 0.5 Nm.
1. Undo locking screw.
2. Lift locking arm using a screwdriver and actuate door handle.
Important!
The system enters into a latching fault when the mechanical release is actuated.
See “System status table LEDs on interlocking/locking module” on page 38,
state Signal sequence erroneous (DIA1 flashes 7 times).
Note:
The system might not enter into a latching fault if the mechanical release is actuated very slowly.
Figure 6: Mechanical release
14
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