EUCHNER MGB2-BP Series User manual

EN
Operating Instructions
Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-…
MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
from V1.0.0

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
2(Translation of the original operating instructions) 2500233-01-05/19
Contents
1. About this document............................................................................................. 5
1.1. Scope............................................................................................................................................5
1.1.1. Notes on older product versions ......................................................................................5
1.2. Target group ..................................................................................................................................5
1.3. Key to symbols...............................................................................................................................5
1.4. Supplementary documents ..............................................................................................................6
2. Correct use .......................................................................................................... 7
2.1. Main differences, MGB2-BP and MGB2-BR.........................................................................................8
3. Description of the safety function .......................................................................... 9
4. Exclusion of liability and warranty ....................................................................... 10
5. General safety precautions ................................................................................. 10
6. Function............................................................................................................. 11
6.1. Locking module MGB2-L1/L2 ........................................................................................................11
6.2. Guard locking for version MGB2-L1 ................................................................................................12
6.3. Guard locking for version MGB2-L2 ................................................................................................12
7. System overview................................................................................................. 13
7.1. Locking module MGB2-L.-… ..........................................................................................................13
7.2. Handle module MGB2-H-….............................................................................................................13
7.3. Escape release MGB-E-... (optional) ................................................................................................14
7.4. Dimension drawing .......................................................................................................................15
8. Manual release................................................................................................... 16
8.1. Auxiliary release and auxiliary key release (can be retrotted) ...........................................................16
8.1.1. Actuating auxiliary release .............................................................................................16
8.1.2. Actuating auxiliary key release .......................................................................................16
8.2. Emergency unlocking (can be retrotted) ........................................................................................17
8.2.1. Actuating emergency unlocking......................................................................................17
8.3. Lockout mechanism......................................................................................................................17
8.4. Escape release (optional) ..............................................................................................................18
8.4.1. Preparing escape release ..............................................................................................19
9. Mounting............................................................................................................ 20
9.1. Replacing modules........................................................................................................................22
9.2. Mounting submodules ...................................................................................................................22
9.3. Replacing submodules ..................................................................................................................23
9.3.1. Replacing submodule with a submodule with a different function (changing conguration) ...23
9.3.2. Fitting and removing lenses and labels for controls and indicators ....................................24
9.4. Changing direction of connection ...................................................................................................24

3
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
10. Changing the door hinge position ........................................................................ 25
10.1. Changing the interlocking/locking module to a different door hinge position ......................................25
10.2. Changing actuating direction of the handle module..........................................................................25
11. Protection against environmental effects............................................................. 27
12. Controls and indicators....................................................................................... 27
13. Electrical connection .......................................................................................... 28
13.1. Using submodules ........................................................................................................................29
13.2. Notes about .........................................................................................................................29
13.3. Safety in case of faults..................................................................................................................29
13.4. Fuse protection for power supply...................................................................................................30
13.5. Requirements for connection cables...............................................................................................30
13.6. Notes on cable laying....................................................................................................................31
13.7. Changing device conguration (using DIP switches) .........................................................................32
13.7.1. Changing system family (BR/BP switching)......................................................................32
13.7.2. Deactivating guard locking monitoring ............................................................................33
13.7.3. Activating release monitoring .........................................................................................33
13.8. Notes on operation with control systems ........................................................................................34
13.9. Connection of guard locking control ...............................................................................................35
13.9.1. Guard locking control for devices with IMM connection.....................................................35
13.9.2. Guard locking control for devices without IMM connection................................................35
13.10. Terminal assignment and contact description..................................................................................36
13.11. Terminal assignment, submodule with plug connector M23 ..............................................................37
13.12. Operation as separate device ........................................................................................................38
13.13. Information on operation in a BR switch chain .................................................................................39
13.13.1. System times ...............................................................................................................39
13.13.2. Wiring a BR switch chain................................................................................................39
13.13.3. Number of devices in switch chains................................................................................39
13.13.4. Resetting in switch chains..............................................................................................39
14. Setup ................................................................................................................. 40
14.1. Teach-in operation (only for MGB2 unicode).....................................................................................40
14.2. Mechanical function test................................................................................................................40
14.3. Electrical function test...................................................................................................................40
15. System states..................................................................................................... 42
15.1. Key to symbols.............................................................................................................................42
15.2. System status table MGB2-BR .......................................................................................................43
15.3. System status table MGB2-BP........................................................................................................45
15.4. System status table (slot LED) .......................................................................................................47
16. Technical data .................................................................................................... 48
16.1. Radio frequency approvals.............................................................................................................49
16.2. Typical system times.....................................................................................................................50

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
4(Translation of the original operating instructions) 2500233-01-05/19
17. Troubleshooting and assistance........................................................................... 51
17.1. Resetting errors ...........................................................................................................................51
17.2. Help on troubleshooting in the Internet ...........................................................................................51
17.3. Help on mounting in the Internet.....................................................................................................51
17.4. Application examples ....................................................................................................................51
18. Service .............................................................................................................. 51
19. Inspection and service ........................................................................................ 52
20. Declaration of conformity ................................................................................... 53

5
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
1. About this document
1.1. Scope
These operating instructions are valid for all MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-….
These operating instructions, the document “Safety information and maintenance” and any enclosed data sheet form the
complete user information for your device.
Series Guard locking types System families Product versions
MGB2
L1 (guard locking by spring force) …-BP…
from V1.0.0
…-BR…
L2 (guard locking by solenoid force) …-BP…
…-BR…
1.1.1. Notes on older product versions
Products with lower product versions or without a version number are not described by these operating instructions. Please
contact our support team in this case.
1.2. Target group
Design engineers and installation planners for safety systems on machines, as well as setup and servicing staff possessing
special expertise in handling safety components as well as expertise in the installation, setup, programming and diagnostics
of programmable logic controllers (PLC).
1.3. Key to symbols
Symbol/depiction Meaning
BP
This section applies on operation as MGB2-BP
BR
This section applies on operation as MGB2-BR
DIP
OFF
ON
In this section attention must be paid to the DIP switch settings
Printed document
Internet
www Document is available for download at www.euchner.com
Document on CD
DANGER
WARNING
CAUTION
Safety precautions
Danger of death or severe injuries
Warning about possible injuries
Caution Slight injuries possible
NOTICE
Important!
Notice about possible device damage
Important information
Tip Useful information

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
6(Translation of the original operating instructions) 2500233-01-05/19
1.4. Supplementary documents
The overall documentation for this device consists of the following documents:
Document title
(document number) Contents
Safety Information and
Maintenance Safety Sys-
tem MGB2-BR/MGB2-BP
from V1.0.0
Basic information for safe setup and service
Operating Instructions
(2500233) (this document)
Internet
www
Possibly enclosed data
sheets Item-specic information about deviations or additions
Important!
Always read all documents to gain a complete overview of safe installation, setup and use of the
device. The documents can be downloaded from www.euchner.com. For this purpose enter the doc.
no. in the search box.

7
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
2. Correct use
The system consists of at least one locking module MGB2-L1-…/MGB2-L2--… and one handle module MGB2-H…
The safety system MGB2-L.-… is an interlocking device with guard locking (type4). Devices with unicode evaluation possess
a high coding level, devices with multicode evaluation possess a low coding level.
The locking module can be congured with the aid of DIP switches. Depending on the setting, the locking module behaves
like a BP or BR device (see chapter 2.1. Main differences, MGB2-BP and MGB2-BR on page 8). In addition the guard
locking monitoring can be switched on or off. More detailed information about the possible settings is available in the chapter
13.7. Changing device conguration (using DIP switches) on page 32.
DIP
OFF
ON With active guard locking monitoring the following applies:
In combination with a movable guard and the machine control, this safety component prevents the guard from being
opened while a dangerous machine function is being performed.
This means:
ÌStarting commands that cause a dangerous machine function must become active only when the guard is
closed and locked.
ÌThe guard locking must not be unlocked until the dangerous machine function has ended.
ÌClosing and locking a guard must not cause automatic starting of a dangerous machine function. A separate
start command must be issued. For exceptions, refer to ENISO12100 or relevant C-standards.
With inactive guard locking monitoring the following applies:
In combination with a movable guard and the machine control, this safety component prevents dangerous machine
functions from occurring while the guard is open. A stop command is triggered if the guard is opened during the
dangerous machine function. With inactive guard locking monitoring, guard locking must be used only for process
protection.
This means:
ÌStarting commands that cause a dangerous machine function must become active only when the guard is
closed.
ÌOpening the guard triggers a stop command.
ÌClosing a guard must not cause automatic starting of a dangerous machine function. A separate start command
must be issued. For exceptions, refer to ENISO12100 or relevant C-standards.
Before the device is used, a risk assessment must be performed on the machine, e.g. in accordance with the following
standards:
ÌENISO13849-1
ÌENISO12100
ÌENIEC62061
Correct use includes observing the relevant requirements for installation and operation, particularly based on the following
standards:
ÌENISO13849-1
ÌENISO14119
ÌENIEC60204-1
The safety system MGB2 can be combined only with the intended modules in the MGB2 system family.
On the modication of system components, EUCHNER provides no warranty for function.
BR
Locking modules with the conguration MGB2-BR can be integrated into a BR switch chain.
Connection of several devices in a BR switch chain is permitted only using devices intended for series connection
in a BR switch chain. Check the operating instructions for the related device.

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
8(Translation of the original operating instructions) 2500233-01-05/19
Important!
ÌThe user is responsible for the proper 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.
ÌCorrect use requires observing the permissible operating parameters (see chapter 16. Technical
data on page 48).
ÌIf a data sheet is included with the product, the information on the data sheet applies.
Table 1: Possible combinations for MGB2 components
Evaluation unit
Handle module Submodules Submodules
MGB2-H-...
from V1.0.0
MSM-.-P-...
MSM-.-N-...
MSM-.-K-...
MSM-.-R-...
MGB2…BR/BP
from V1.0.0 –
Key to symbols Combination possible
– Combination not possible
2.1. Main differences, MGB2-BP and MGB2-BR
System family Symbol Use
MGB2-BP
BP
Optimized for operation in safe control systems.
If series connection is not necessary, the number of terminals required can be reduced using this system family.
MGB2-BR
BR
Linking of several guards on one shutdown path. As a consequence several safety doors can be very simply polled using one evalua-
tion unit or two control system inputs.

9
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
3. Description of the safety function
Devices from this series feature the following safety functions:
With active guard locking monitoring the following applies:
DIP
OFF
ON Monitoring of guard locking and the position of the guard
(interlocking device with guard locking according to ENISO14119)
ÌSafety function (see chapter 6. Function on page 11):
- The safety outputs are switched off when guard locking is released (monitoring of the locking element).
Important: This applies only if guard locking monitoring is active!
- The safety outputs are switched off when the guard is open.
- Guard locking can be activated only when the bolt tongue is located in the locking module (failsafe locking
mechanism).
ÌSafety characteristics: category, Performance Level, PFHD(see chapter 16. Technical data on page 48).
Activation of guard locking
ÌSafety function
If the device is used as guard locking for personnel protection, control of guard locking must be regarded as a
safety function.
The safety level of guard locking control is determined by the device PFHDint. and by the external control (e.g.
PFHDext. of the standstill monitor).
PFHDext.
Guardlocking Device
(e.g. standstill
monitor) (locking mean)
ÌSafety characteristics: category, Performance Level, PFHD(see chapter 16. Technical data on page 48).
With inactive guard locking monitoring the following applies:
DIP
OFF
ON Monitoring of the guard position
(interlocking device according to ENISO14119)
ÌSafety function: The safety outputs are switched off when the guard is open (see chapter 6. Function on page
11).
ÌSafety characteristics: category, Performance Level, PFHD(see chapter 16. Technical data on page 48).
The following applies to devices with emergency stop:
Emergency stop
(emergency stop device according to ENISO13850)
ÌSafety function: Emergency stop function
ÌSafety characteristics: B10D value (see chapter 16. Technical data on page 48)

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
10 (Translation of the original operating instructions) 2500233-01-05/19
4. Exclusion of liability and warranty
In case of failure to comply with the conditions for correct use stated above, or if the safety regulations are not followed,
or if any servicing is not performed as required, liability will be excluded and the warranty void.
5. General safety precautions
Safety switches fulll personnel protection functions. Incorrect installation or tampering can lead to fatal injuries to personnel.
Check the safe function of the guard and, if necessary, other safety functions particularly
Ìafter any setup work
Ìeach time after replacement of a component relevant to safety
Ìafter an extended period without use
Ìafter every fault
Ìafter any change to the DIP switch settings
Independent of these checks, the safe function of the guard should be checked at suitable intervals as part of the mainte-
nance schedule.
WARNING
Danger to life due to improper installation or due to bypassing (tampering). Safety components fulll
a personnel protection function.
ÌSafety components must not be bypassed, turned away, removed or otherwise rendered ineffec-
tive. On this topic pay attention in particular to the measures for reducing the possibility of bypass-
ing according to ENISO14119:2013, section 7.
ÌThe switching operation is allowed to be triggered only by the intended handle module MGB2-H…
that is positively fastened to the guard.
ÌPrevent bypassing by means of replacement actuators (only for multicode evaluation). For this
purpose, restrict access to actuators and to keys for releases, for example.
ÌMounting, electrical connection and setup only by authorized personnel possessing the following
knowledge:
- specialist knowledge in handling safety components
- knowledge about the applicable EMC regulations
- knowledge about the applicable regulations on operational safety and accident prevention.
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. For this reason you should
archive a printed copy of the operating instructions. You can download the operating instructions from
www.euchner.com.

11
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
6. Function
6.1. Locking module MGB2-L1/L2
Together with a handle module, the locking module makes it possible to lock movable guards. The combination also serves
as a mechanical door stop at the same time.
DIP
OFF
ON The following switch-on condition applies to the safety outputs FO1A and FO1B (also see chapters 15.2. System
status table MGB2-BR on page 43 and 15.3. System status table MGB2-BP on page 45):
DIP switch
Conguration
System family MGB2-BR MGB2-BP
Guard locking monitoring active inactive active inactive
Condition
No fault in the device
&
TRUE TRUE TRUE TRUE
Guard closed TRUE TRUE TRUE TRUE
Bolt tongue inserted in locking module TRUE TRUE TRUE TRUE
Guard locking active TRUE Not relevant TRUE Not relevant
In case of series connection:
Signal available from the upstream switch on the safety inputs FI1A
and FI1B
In case of separate operation:
DC24V present at the safety inputs FI1A and FI1B
TRUE TRUE Not relevant Not relevant
FO1A and FO1B are ON
The locking module detects the position of the guard and the position of the bolt tongue. The position of the guard locking
is also monitored.
Guard locking monitoring can be deactivated using DIP switches (see chapter 13.7. Changing device conguration (using
DIP switches) on page 32).
Important!
For use as guard locking for personnel protection in accordance with ENISO14119, guard locking
monitoring must be active.
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 into 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.

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
12 (Translation of the original operating instructions) 2500233-01-05/19
6.2. Guard locking for version MGB2-L1
(Guard locking actuated by spring force and released by power-ON)
Activating guard locking: close guard; no voltage at the solenoid.
Releasing guard locking: apply voltage to the solenoid.
The spring-operated guard locking functions in accordance with the closed-circuit current principle. If the voltage is interrupted
at the solenoid, the guard locking remains active and the guard cannot be opened directly.
Important!
If the guard is open when the power supply is interrupted and is then closed, guard locking is activated.
This can lead to persons being locked in unintentionally.
As long as the guard locking is closed, the bolt tongue cannot be pulled out of the locking module and the guard is locked.
If voltage is applied to the guard locking solenoid, the guard locking is opened and bolt tongue is released. The guard can
be opened.
6.3. Guard locking for version MGB2-L2
(Guard locking actuated by power-ON and released by spring force)
Important!
Use as guard locking for personnel protection is possible only in special cases, after strict assessment
of the accident risk (see ENISO14119:2013, section 5.7.1)!
Activating guard locking: apply voltage to the solenoid.
Releasing guard locking: disconnect voltage from the solenoid.
The magnetically actuated guard locking operates in accordance with the open-circuit current principle. If the voltage is
interrupted at the solenoid, the guard locking is released and the guard can be opened directly!
The guard can be opened as long as no voltage is applied to the guard locking solenoid.
If voltage is present at the guard locking solenoid, the guard locking is held in the locked position and the guard is locked.

13
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
7. System overview
Key:
1Interlocking modul/Locking module (MGB2-I…/
MGB2-L…)
2Escape release, optional (MGB-E-…)
3Handle module (MGB2-H…)
1 2
3
Figure 1: Overall system
7.1. Locking module MGB2-L.-…
Key:
1Depending on version: Cable gland
M20x1,5 or plug connector
2Module function LED indicators
3Auxiliary release (optional, only on
version with guard locking)
LED indicator for submodule in
SLOT1
5Submodule in SLOT1 (conguration
example)
6Auxiliary marking for correct align-
ment in relation to the handle module
7Locking arm
Terminals (X1-X4)
Internal reset
Notice:
Depending on the version, additional
controls and indicators may be integrated
into the cover and a mounting plate can
be included.
See enclosed data sheet.








Figure 2: Locking module MGB2-L.--…
7.2. Handle module MGB2-H-…
1
2
3
4
5
6
Key:
1Door handle
2Hinged lockout mechanism
3Automatically extending lockout mechanism (optional)
Auxiliary markings for max. permissible mounting distance
5Bolt tongue
6Latching pin for handle adjustment
Figure 3: Handle module MGB2-H-…

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
14 (Translation of the original operating instructions) 2500233-01-05/19
7.3. Escape release MGB-E-... (optional)
1 2 3 4
Key:
1Door handle
2Housing
3Actuation axis 8 x 8 mm
(different lengths available)
Protective sleeve
Notice:
Depending on the version, a mounting plate can be included.
See enclosed data sheet.
Figure 4: Escape release MGB-E-...

15
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
7.4. Dimension drawing
40
15
40
155
4
130
114
114,2 110,59
62,322,2
40
130
63
52,5
155
4
42
115,5
(289)
Figure 5: Dimension drawing MGB2 tted, without optional mounting plates

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
16 (Translation of the original operating instructions) 2500233-01-05/19
8. Manual release
Some situations require the guard locking to be released manually (e.g. malfunctions or an emergency). A function test
should be performed after release.
More information on this topic can be found in the standard ENISO14119:2013, section 5.7.5.1. The device can feature
the following release functions:
8.1. Auxiliary release and auxiliary key release (can be retrotted)
In the event of malfunctions, the guard locking can be released with the auxiliary release irrespective of the state of the
solenoid.
The safety outputs are switched off when the auxiliary release is actuated. Use the safety outputs to generate a stop
command.
The monitoring output OL is switched off; OD indicates the current state of the guard. Open the guard and close it again
after resetting the auxiliary release. The device will then operate normally again.
8.1.1. Actuating auxiliary release
1. Remove seal label or make a hole.
2. Undo locking screw.
3. Using a screwdriver, turn the auxiliary release to in the direction of the arrow.
¨Guard locking is released.
DIP
OFF
ON ÌWhen release monitoring is active, the system enters into a latching fault when the auxiliary release is actuated.
See System status table, signal sequence incorrect status (DIA red, Lock ashes 1 time).
ÌThe system might not enter into a latching fault if the auxiliary release is actuated very slowly.
Important!
ÌThe auxiliary release must be reset at the control system level, e.g. by means of a plausibility
check (status of the safety outputs does not match the guard locking activation signal). See
ENISO14119:2013, sec. 5.7.5.4.
ÌThe auxiliary release is not a safety function.
ÌThe machine manufacturer must select and use a suitable release (escape release, emergency
unlocking, etc.) for a specic application. A hazard assessment is required for this purpose. It may
be necessary to take specications from a product standard into account.
ÌThe correct function must be checked at regular intervals.
ÌLoss of the release function due to mounting errors or damage during mounting. Check the re-
lease function every time after mounting.
ÌPlease observe the notes on any enclosed data sheets.
8.1.2. Actuating auxiliary key release
On devices with auxiliary key release (can be retrotted), simply turn the key to release. Function as for auxiliary release.
For mounting, see the auxiliary key release supplement.
1 2 3
Figure 6: Auxiliary release

17
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
8.2. Emergency unlocking (can be retrotted)
Permits opening of a locked guard from outside the danger zone without tools. For mounting, see the mounting supplement.
Important!
ÌIt must be possible to operate the emergency unlocking manually from outside the protected area
without tools.
ÌThe emergency unlocking must possess a marking indicating that it may be used only in an emer-
gency.
ÌThe actuator must not be under tensile stress during manual release.
ÌThe unlocking function meets all other requirements from ENISO14119.
ÌThe emergency unlocking meets the requirements of Category B according to
ENISO13849-1:2015.
ÌLoss of the release function due to mounting errors or damage during mounting.
ÌCheck the release function every time after mounting.
ÌPlease observe the notes on any enclosed data sheets.
8.2.1. Actuating emergency unlocking
ÌTurn emergency unlocking clockwise until it clicks into place.
¨Guard locking is released.
To reset, press the snap-in bolt inward using a small screwdriver or similar tool and turn the emergency unlocking back.
The safety outputs are switched off when the emergency unlocking is actuated. Use the safety outputs to generate
a stop command.
The monitoring output OL is switched off; OD indicates the current state of the guard. Open the guard and close it again
after resetting the emergency unlocking. The device will then operate normally again.
8.3. Lockout mechanism
If the lockout mechanism is pivoted out, the bolt tongue cannot be extended. The lockout mechanism can be secured with
padlocks (see Figure 7). This is intended to prevent people from being locked in unintentionally. The lockout mechanism
does not fulll any safety function.
¨To pivot out, press the grooved part (possible only with bolt tongue retracted).
2
1
Key:
1Hinged lockout mechanism
Padlock ∅min. 2mm, ∅max. 10 mm
2Automatically extending lockout mechanism (optional)
Padlock ∅min. 6mm, ∅max. 10 mm
Notice:
You can t a maximum of 3 locks ∅8mm per lockout mechanism.
Figure 7: Lockout mechanism secured with padlock

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
18 (Translation of the original operating instructions) 2500233-01-05/19
8.4. Escape release (optional)
The escape release is used to open a locked guard from the inside without tools.
DIP
OFF
ON When release monitoring is active, the system enters into a latching fault when the escape release is actuated.
See System status table, signal sequence incorrect status (DIA red, Lock ashes 1 time).
The system might not enter into a latching fault if the escape release is actuated very slowly.
Depending on the parameters set in your conguration environment, the system may enter into a latching fault if the escape
release is actuated (see chapter 17. Troubleshooting and assistance on page 51).
Important!
ÌIt must be possible to actuate the escape release manually from inside the protected area without
tools.
ÌIt must not be possible to reach the escape release from the outside.
ÌThe bolt tongue must not be under tensile stress during manual release.
ÌThe escape release meets the requirements of Category B according to ENISO13849-1:2015.
ÌThe correct function must be checked at regular intervals.
ÌPlease observe the notes on any enclosed data sheets.
ÌFit escape release such that operation, inspection and maintenance are possible.
ÌThe actuation axis for the escape release must be inserted min. 9 mm into the handle module. Note the information on
the different prole widths in the chapter 8.4.1. Preparing escape release on page 19.
ÌAlign escape release axis at right angles to the handle module. See Figure 9.

19
2500233-01-05/19 (Translation of the original operating instructions)
Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
EN
8.4.1. Preparing escape release
Prole width Length required for
Actuation axis
Which EUCHNER parts are required? Necessary work steps
Without
mounting
plates
With mounting
plates
(4 mm each)
D D+9 D+17
30 mm 39 mm 47 mm Standard escape release
with 107 mm axis
(order no. 100465)
Shorten to required length
40 mm 49 mm 57 mm Standard escape release
with 107 mm axis
(order no. 100465)
If necessary,
extended actuation axis (order no. 106761)
Without mounting plates:
None
With mounting plates:
Use extended actuation axis and protective sleeve and
shorten to required length
45 mm 54 mm 62 mm Standard escape release
with 107 mm axis
(order no. 100465)
and
extended actuation axis (order no. 106761)
Use extended actuation axis and protective sleeve and
shorten to required length
50 mm 59 mm 67 mm Standard escape release
with 107 mm axis
(order no. 100465)
and
extended actuation axis (order no. 106761)
Use extended actuation axis and protective sleeve and
shorten to required length
55,5
M4
250
182
D -1
D + 10,25
±1,25
D
(11,5) 55,5
Example without mounting plates:
Escape release
Handle module
Actuation axis Protective sleeve
(+4 mm per mounting plate)
(+4 mm per mounting plate)
1Insert actuation axis. The snap ring Amust be in contact with the escape release B.
2Fit door handle.
3Tighten xing screw to 2Nm and press in cap.
Fit protective sleeve.
1
3
2
4
A
B
Figure 8: Preparing escape release

Operating Instructions Safety Systems
MGB2-L1…-BR.-… / MGB2-L2…-BR.-… and MGB2-L1…-BP.-… / MGB2-L2…-BP.-…
20 (Translation of the original operating instructions) 2500233-01-05/19
9. Mounting
WARNING
Mounting must be performed only by authorized personnel.
With two-leaf hinged doors, one of the two door leaves must also be latched mechanically.
Use a rod latch (Item) or a double-door lock (Bosch Rexroth) for this purpose, for example.
Important!
ÌIf installed ush, the switching distance changes as a function of the installation depth and the
guard material.
Locking
module Handle module
Locking
module Handle module
Surface mounting
Flush installation
Operating distance
Operating distance
Tip!
ÌYou will nd an animation on the mounting process at www.euchner.com.
ÌThe pushbuttons and indicators can be customized using replaceable color covers and labels.
For mounting steps , see Figure 9 and Figure 12 to Figure 17.
Attach system such that operation of the auxiliary release as well as inspection and maintenance are possible.
The locking screw must be screwed back in and sealed after assembly and after every use of the auxiliary release. (Seal
labels order no. 155853). Tightening torque 0.5Nm.