EUCHNER MGB-L**B-PN series User manual

EN
Operating Instructions
Safety Systems
MGB-L..B-PN.-… (PROFINET)
With Expanded Data Structure Type C
from V3.30.1

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
2(translation of the original operating instructions) 2123622-04-06/19
Contents
1. About this document............................................................................................. 4
1.1. Scope............................................................................................................................................4
1.1.1. Notes on older product versions ......................................................................................4
1.2. Target group ..................................................................................................................................4
1.3. Key to symbols...............................................................................................................................4
1.4. Supplementary documents ..............................................................................................................4
2. Correct use .......................................................................................................... 5
3. Exclusion of liability and warranty ......................................................................... 6
4. General safety instructions.................................................................................... 7
5. Function............................................................................................................... 8
5.1. Locking module MGB-L2.B-PN..........................................................................................................8
5.2. Guard locking for version MGB-L2 ....................................................................................................8
6. Control of guard locking ....................................................................................... 9
7. System overview................................................................................................. 10
7.1. Bus module MGB-B-…-PN ..............................................................................................................10
7.2. Evaluation module MGB-L.-.............................................................................................................11
7.3. Handle module MGB-H-…...............................................................................................................11
7.4. Escape release MGB-E-... (optional) ................................................................................................11
7.5. Dimension drawing .......................................................................................................................11
7.6. Manual release .............................................................................................................................11
7.7. Mechanical release .......................................................................................................................12
7.8. Lockout mechanism......................................................................................................................13
7.9. Escape release (optional) ..............................................................................................................13
7.9.1. Preparing escape release ..............................................................................................14
8. Mounting............................................................................................................ 15
8.1. Mounting color cover ....................................................................................................................16
9. Changing actuating direction .............................................................................. 17
10. Protection against environmental effects............................................................. 18
11. Controls and indicators....................................................................................... 19
12. Electrical connection .......................................................................................... 20
12.1. Notes about .........................................................................................................................21
12.2. Connections on bus module...........................................................................................................21
12.2.1. Terminal assignment for version with push-pull plugs........................................................21

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2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
13. Setup ................................................................................................................. 22
13.1. Integrating into PROFINET and PROFIsafe .......................................................................................22
13.2. Replacement of an MGB system without programming device ..........................................................22
13.3. System reset to factory settings....................................................................................................22
13.4. Mechanical function test................................................................................................................23
13.5. Electrical function test...................................................................................................................23
13.6. PROFINET data bytes for “standard” and “expanded” data structures
(data blocks for non-safety-related functions)...................................................................................24
13.7. Data blocks for MGB modules........................................................................................................24
13.7.1. Data block for “standard” MGB bus module.....................................................................25
13.7.2. Data block for “expanded” MGB bus module ...................................................................25
13.7.3. Additional button functions (only for conguration with expanded data structure)................26
13.7.4. Data block for MGB locking module L2 ...........................................................................26
13.8. Data blocks of individual functions at a glance ................................................................................27
13.8.1. Data block for “standard” emergency stop function..........................................................27
13.8.2. Data block for “standard” enabling switch function (optional) ............................................28
13.8.3. Data block for “expanded” enabling switch function (optional)...........................................28
13.8.4. Additional button functions (only for conguration with expanded data structure)................28
13.8.5. Data block for “standard” diagnostics function ................................................................29
13.8.6. Data block for “expanded” diagnostics function...............................................................30
13.9. PROFIsafe data bytes (data block for safe functions)........................................................................31
13.9.1. “Standard” PROFIsafe data bytes....................................................................................31
13.9.2. Data block for “standard” PROFIsafe...............................................................................32
13.9.3. “Expanded” PROFIsafe data bytes ..................................................................................33
13.9.4. Data block for “expanded” PROFIsafe .............................................................................33
14. Diagnostic messages of the MGB system............................................................. 36
15. System status table ............................................................................................ 38
16. Technical data .................................................................................................... 39
17. Troubleshooting .................................................................................................. 40
17.1. Latching fault when actuating the escape release............................................................................40
17.2. Fault reset....................................................................................................................................40
18. Service .............................................................................................................. 41
19. Inspection and service ........................................................................................ 41
20. Declaration of conformity ................................................................................... 42

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
4(translation of the original operating instructions) 2123622-04-06/19
1. About this document
1.1. Scope
These operating instructions are valid for all MGB-PN devices with the expanded data structure with version number V3.30.1 or
higher. These operating instructions and a possibly enclosed data sheet form the complete user information for your device.
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 devices on machines, as well as setup and servicing staff possessing
special expertise in handling safety components.
1.3. Key to symbols
Symbol/depiction Signicance
Printed document
Internet
www Document is available for download at www.EUCHNER.de
Document on CD
DANGER
WARNING
CAUTION
Safety precautions
Danger of death or severe injuries
Warning about possible injuries
Caution Minor injuries possible
NOTICE
Important!
Notice about possible device damage
Important information
Tip Tip/useful information
1.4. Supplementary documents
The overall documentation for this device consists of the following documents:
Document title
(document number) Contents
Operating instructions
(123622) (this document)
Possibly enclosed data
sheet 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.de. Enter the document number in the
search box for this purpose.

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2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
2. Correct use
The system comprises at least one locking module MGB-L2-… and one handle module MGB-H...
The safety system MGB is an interlocking device with guard locking (type4). Devices with unicode evaluation possess a
high coding level; devices with multicode evaluation feature a low coding level.
In combination with a safety guard and the machine control, this safety component prevents the safety 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 safety guard is closed
and locked.
ÌThe guard locking device must not be unlocked until the dangerous machine function has ended.
ÌClosing and locking a safety 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.
Locking module MGB-L2B-PN.-… is operated as an IO device in the PROFINET (PROFIsafe).
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, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design
ÌENISO12100, Safety of machinery – General principles for design – Risk assessment and risk reduction
ÌIEC62061, Safety of machinery. Functional safety of safety-related electrical, electronic and programmable electronic
control systems.
Correct use includes observing the relevant requirements for installation and operation, particularly based on the following
standards:
ÌENISO13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design
ÌENISO14119 (supersedes EN1088), Safety of machinery. Interlocking devices associated with guards. Principles for
design and selection
ÌEN60204-1, Safety of machinery – Electrical equipment of machines – Part 1: General requirements
The safety system MGB can only be combined with the intended modules in the MGB system family. Only handle modules
with a version number of V2.0.0 or higher may be used.
On the modication of system components, EUCHNER provides no warranty for function.
The customer is responsible for the safe overall function, especially for the safe integration into the PROFIsafe environment.
Comprehensive information about proper conguration of assembly and setup for PROFINET installations can be found at
http://www.probus.com/.
Important!
ÌThe user is responsible for the correct 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 39).
ÌIf a product data sheet is included with the product, the information on the data sheet applies.
Table 1: Possible combinations for MGB components
Evaluation unit
Handle module
MGB-H-...
from V2.0.0
MGB…PN
from V3.30.1
Key to symbols Combination possible

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
6(translation of the original operating instructions) 2123622-04-06/19
3. 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.

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2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
4. General safety instructions
Safety switches fulll personal protection functions. Incorrect installation or tampering can lead to fatal injuries to personnel.
Check the safe function of the safety guard particularly
Ìafter any setup work
Ìafter the replacement of an MGB component
Ìafter an extended period without use
Ìafter 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
Danger to life due to improper installation or due to bypassing (tampering). Safety components perform
a personal 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 only allowed to be triggered by the intended handle module MGB-H…
that is positively fastened to the safety guard.
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 occupational 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. 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.

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
8(translation of the original operating instructions) 2123622-04-06/19
5. Function
5.1. Locking module MGB-L2.B-PN.
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.
Important!
To operate the device as a guard lock according to ENISO14119, the signals for door position
(T=PROFIsafe bit SI0.2), bolt position (R= PROFIsafe 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 (ÜK=safety bit SI1.1).
As an alternative, you can also link the bits SI0.2 to SI0.4 individually in your control system.
The following switch-on condition applies to safety bit SI1.1 (see also chapter 15. System status table on page 38 and
chapter 13.9. PROFIsafe data bytes (data block for safe functions) on page 31):
ÌSafety guard closed (T)
ÌBolt tongue inserted into locking module (R)
ÌLocking 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.
5.2. Guard locking for version MGB-L2
(guard locking actuated by energy 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)!
The magnetically actuated guard locking operates in accordance with the open-circuit current principle. If voltage is inter-
rupted at the solenoid, guard locking is released and the safety guard can be opened directly!
The safety guard can be opened as long as no voltage is present at the guard locking solenoid.
If voltage is present at the guard locking solenoid, the locking arm is held in extended position and the safety guard is locked.

9
2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
6. Control of guard locking
By changing the parameters in the conguration tool of your control system, it can be set whether bit O 0.0 (in the safe
data block for the MGB locking module) is evaluated as well (see chapter 13.7.4. Data block for MGB locking module L2
on page 26).
The guard locking solenoid is controlled if
Ìbit O 0.0 OR bit SO 0.0 = 1
Truth table:
PROFINET bit PROFIsafe bit Guard locking with
O 0.0 SO 0.0 MGB-L2…
0 0 inactive
0 1 active
1 0 active
1 1 active

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
10 (translation of the original operating instructions) 2123622-04-06/19
7. System overview
Mounting plate
Escape release (optional)
(MGB-E…)
Handle module
(MGB-H…)
Evaluation module
(MGB-L…)
Bus module
(Pronet)
(MGB-B…)
Figure 1: Components at a glance
NOTICE
MGB-PN systems are completely factory congured. The conguration must not be changed subse-
quently. The illustrations in this chapter can deviate from your system and serve only as examples. The
conguration of your MGB system can be found in the data sheet included with every MGB system.
7.1. Bus module MGB-B-…-PN
Key:
1LED indicator
2Power supply
3PROFINET connection
Notice:
Depending on the version, additional controls and indicators may be integrated into
the cover. See enclosed data sheet.
1
23
Figure 2: Bus module MGB-B-…-PN (conguration example)

11
2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
7.2. Evaluation module MGB-L.-
2
1
3
4
Key:
1LED indicator
2Cover for mechanical release
3Locking arm (only for version with guard locking)
4Auxiliary marking for max. permitted mounting distance
Notice:
Depending on the version, additional controls and indicators may be integrated into
the cover. See enclosed data sheet.
Figure 3: Evaluation module MGB-L.-
7.3. Handle module MGB-H-…
1
2
33
4
Key:
1Door handle
2Locking screws T10 for housing cover and handle adjustment
3Fold-out locking mechanism
(optional: second, automatically extending lockout mechanism)
4Bolt tongue
Notice:
Depending on the version, a mounting plate can be included.
See enclosed data sheet.
Figure 4: Handle module MGB-H-…
7.4. Escape release MGB-E-... (optional)
1 2 3 4
Key:
1Door handle
2Housing
3Actuation axis 8 x 8 mm
(different lengths available)
4Protective sleeve
Notice:
Depending on the version, a mounting plate can be included.
See enclosed data sheet.
Figure 5: Escape release MGB-E-...
7.5. Dimension drawing
See enclosed data sheet.
7.6. Manual release
Some situations require 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:

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
12 (translation of the original operating instructions) 2123622-04-06/19
7.7. Mechanical release
In the event of service, the guard locking can be released with the mechanical release irrespective of the state of the sole-
noid (see Figure 6).
Important!
ÌThe system enters into a latching fault when the mechanical release is actuated. See System sta-
tus table, signal sequence incorrect status (DIA red, Lock ashes 1 time).
ÌThe system might not enter into a latching fault if the mechanical release is actuated very slowly.
Important!
ÌThe mechanical 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 risk 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 possibly enclosed data sheets.
The locking screw must be screwed back in and sealed (for example with sealing lacquer) after assembly and after every
use of the mechanical release. Tightening torque 0.5 Nm.
1. Undo locking screw.
2. Lift locking arm using a screwdriver and actuate door handle.
Figure 6: Mechanical release

13
2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
7.8. Lockout mechanism
If the lockout mechanism is pivoted out/extended, the bolt tongue cannot be extended. The lockout mechanism can be
secured with padlocks (see Figure 7).
¨To pivot out, press the grooved part (only possible with bolt tongue retracted).
12
Key:
1Padlock ∅min. 2mm, ∅max. 10 mm
Notice:
You can t a maximum of 3 locks Ø8mm.
2Automatically extending, second lockout mechanism
Padlock ∅min. 6mm, ∅max. 10 mm
Figure 7: Lockout mechanism secured with padlock
7.9. Escape release (optional)
The escape release is used to open a locked safety guard from the inside without tools.
The system enters into a latching fault when the escape release is actuated.
See chapter 15. System status table on page 38, 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.
Important!
ÌIt must be possible to operate 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 actuator must not be under tensile stress during manual release.
ÌThe escape release meets the requirements of Category B according to EN ISO 13849-1:2008.
ÌThe correct function must be checked at regular intervals.
ÌPlease observe the notes on possibly enclosed data sheets.
ÌFit escape release such that operation, inspection and service are possible.
ÌThe actuation axis for the escape release must be inserted min. 10 mm into the handle module. Note the information on
the different prole widths in the next chapter.
ÌAlign escape release axis at right angles to the handle module. See Figure 8.

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
14 (translation of the original operating instructions) 2123622-04-06/19
7.9.1. 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 + 9
D -1
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.
4Fit protective sleeve.
1
3
2
4
A
B
Figure 8: Preparing escape release

15
2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
8. Mounting
WARNING
Mounting must be performed only by authorized personnel.
With two-wing hinged doors, one of the two door wings additionally must 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
safety guard material.
Locking
module
Locking
module
Handle
module
Handle
module
Surface mounting
Flush mounting
Operating distance
Operating distance
Tip!
ÌYou can nd an animation on the mounting process at www.mgb.euchner.de.
ÌThe color and labeling of pushbuttons and indicators can be modied.
For mounting steps, see Figure 9 and Figure 10 to Figure 15.
Attach system such that operation of the mechanical release as well as inspection and maintenance are possible.
The locking screw of the mechanical release must be returned to its original position and sealed before putting into operation
(for example with sealing lacquer).

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
16 (translation of the original operating instructions) 2123622-04-06/19
Figure 9: Installation example for door hinged on the right (general view)
8.1. Mounting color cover
1 2
23
90°
Click!
1
Mounting
Removing
Color cover

17
2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
9. Changing actuating direction
(here: from right to left)
Important!
It is only possible to make this change when the bolt tongue is not extended and an escape release
is not yet mounted.
As supplied, the handle module is set either for doors hinged on the right or for doors hinged on the left.
Based on the example of a handle module for doors hinged on the right this means:
ÌThe safety guard opens by pressing down the door handle.
ÌThe system is mounted the other way around for doors hinged on the left. In other words, the safety guard is opened by
pressing up the door handle (see Figure 10). For this reason the actuating direction of the door handle must be changed
(see Figure 10 to Figure 15).
(Similarly on handle modules for doors hinged on the left.)
CLOSED
OPEN 1
3
2
1Press door handle up.
2Unscrew locking screws.
3Push cover aside.
Figure 10: Changing actuating direction, step 1Figure 11: Changing actuating direction, steps 2and 3
5
4
4Lift the locking pin on the door handle using a screwdriver and hold
it in this position.
5Turn door handle to the right.
7
8
6b
a
3 mm
6Only if using an escape release: using the hexagon head screw,
turn the joint counterclockwise from position (a) to position (b).
7Close cover.
8Screw in locking screws and tighten them to 0.8 Nm.
Figure 12: Changing actuating direction, steps 4and 5Figure 13: Changing actuating direction, steps 6to 8

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
18 (translation of the original operating instructions) 2123622-04-06/19
3 mm
9
10
11
OPEN
CLOSED
9Remove cover and undo hexagon socket head screw.
AT Reposition door handle 90° in clockwise direction and fasten again.
A Tighten hexagon socket head screw to 3 Nm. A State after repositioning.
Figure 14: Changing actuating direction, steps 9and A Figure 15: Changing actuating direction, nal state
10. Protection against environmental effects
Lasting and correct safety function requires that the system must be protected against foreign bodies such as swarf, sand,
blasting shot, etc., which can become lodged in the locking and handle modules. For this purpose a suitable installation
position should be selected.
Cover device during painting work!

19
2123622-04-06/19 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
EN
11. Controls and indicators
Data
Link
SF
BF
ON
B
U
1
1
2
Link
Data
2
X1 X3 X4
PN1PN2
X2
DC24V DC24V
Data2
Link2
SF
BF
ON
UB
Link1
Lock
DIA
State
Power
Data1
3
6
12
51 2 3 4
4
LEDs on the bus module
LED Color Description
Link 1 and
Link 2
Green Bus plug inserted:
statically on
Data 1 and
Data 2
Yellow Data transfer:
ashing
SF Red System error:
statically on
(see chapter on diag-
nostic messages of
the MGB system)
BF Red Bus error:
statically on
(see chapter on diag-
nostic messages of
the MGB system)
ON Green Self-test OK: stati-
cally on
User passivated:
ashing
UB Green Power supply OK:
statically on
LEDs on evaluation module
see System status table
DIP switches for PROFIsafe address
For coding see above
3
6
1 2
51 2 3 4
4
1 2 4 8 16 32
64
128 256 512
OFF
ON
ON
OFF
default address:
128 + 4 + 2 + 1 = 135
Binary coding of the DIP
switches for PROFIsafe
address (factory setting:
135)
Cover for DIP switches
Figure 16: Displays and controls/binary coding of the DIP switches for PROFIsafe address (factory setting: 135)

Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
20 (translation of the original operating instructions) 2123622-04-06/19
12. Electrical connection
WARNING
In case of an error, loss of the safety function through incorrect connection.
ÌMounting must be performed only by authorized personnel.
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
ÌAll the electrical connections must either be isolated from the mains supply by a safety trans-
former according EN IEC 61558-2-6 with limited output voltage in the event of a fault, or by other
equivalent isolation measures.
ÌPower devices which are a powerful source of interference must be installed in a separate location
away from the input and output circuits for signal processing. The cable routing for safety circuits
should be as far away as possible from the cables of the power circuits.
ÌIn order to avoid EMC interference, follow EMC notes on devices in the immediate vicinity of the
MGB system and their cables.
ÌIn order to avoid EMC interference, the physical environmental and operating conditions at the
installation site of the device must comply with the requirements according to the standard DIN
EN60204-1:2006, section 4.4.2 /EMC).
Important!
ÌThe supply for further users on the bus may be forwarded via the Euchner MGB system. The entire
supply current through the MGB must not be higher than specied in the chapter 16. Technical
data on page 39.
ÌThe function earth must be connected. An M6 threaded bore is available on the mounting plate
for this purpose.
ÌIf the device does not appear to function when operating voltage is applied (e.g. UB LED does not
illuminate), the safety switch must be returned unopened to the manufacturer.
ÌTo ensure the stated degree of protection IP67 is achieved, the cover screws must be tightened to
a tightening torque of 1 Nm.
ÌTighten screw for the cover of the mechanical release to 0.5 Nm.