EUCHNER CTM-LBI-BP-D Series User manual

EN
Operating Instructions
Transponder-Coded Safety Switch with Guard Locking for Process Protection
CTM-LBI-BP/BR-..D Unicode/Multicode
with Control of Guard Locking via IO-Link

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
2(translation of the original operating instructions) MAN20001661-01-05/23
Contents
1. About this document............................................................................................. 4
1.1. Scope............................................................................................................................................4
1.2. Target group ..................................................................................................................................4
1.3. Key to symbols...............................................................................................................................4
1.4. Supplementary documents ..............................................................................................................4
2. Correct use .......................................................................................................... 5
3. Description of the safety function .......................................................................... 6
4. Exclusion of liability and warranty ......................................................................... 7
5. General safety precautions ................................................................................... 7
6. Function............................................................................................................... 8
6.1. Bistable guard locking.....................................................................................................................8
6.2. Guard lock monitoring.....................................................................................................................8
6.3. Monitoring outputs/status bits .........................................................................................................8
6.3.1. Door position signal OD....................................................................................................8
6.3.2. Diagnostic signal OI .........................................................................................................8
6.3.3. Guard locking signal OL ...................................................................................................9
6.3.4. Status signal OM..............................................................................................................9
6.3.5. Locking element signal OLS..............................................................................................9
6.3.6. Communication connection C............................................................................................9
6.4. Guard locking .................................................................................................................................9
6.5. Switching states ...........................................................................................................................10
7. Manual release................................................................................................... 11
7.1. Auxiliary release............................................................................................................................11
8. Mounting............................................................................................................ 12
9. Electrical connection .......................................................................................... 13
9.1. Notes about .........................................................................................................................14
9.2. Safety in case of faults..................................................................................................................14
9.3. Fuse protection for power supply...................................................................................................14
9.4. Requirements for connecting cables...............................................................................................15
9.5. Connector assignments.................................................................................................................15
9.5.1. Connector assignment of safety switch CTM-…-BR-…-AZD-SA-…
with plug connector M12, 8-pin .......................................................................................15
9.6. Notes on operation with safe control systems.................................................................................15
10. Connection of a single CTM-BP/BR (separate operation)...................................... 16
11. Connection of several devices in a chain (series connection)................................ 17
11.1. Series connection with wiring in the control cabinet.........................................................................17
11.2. Series connection with Y-distributors ..............................................................................................18
11.2.1. Maximum cable lengths with BR switch chains..................................................................18
11.2.2. Determining cable lengths ..............................................................................................18
11.2.3. Connector assignment of Y-distributor for series connection with IO-Link communication .....19

3
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
12. Using communication data.................................................................................. 21
12.1. Connection to a BR/IO-Link Gateway GWY-CB..................................................................................21
12.2. Connection to a safety relay ESM-CB..............................................................................................21
12.3. Overview of the communication data ..............................................................................................22
12.3.1. Cyclical data (process data)............................................................................................22
12.3.2. Acyclical data (device data and events)............................................................................23
13. Setup ................................................................................................................. 24
13.1. Teaching-in actuator (only for unicode evaluation) ............................................................................24
13.2. Functional check...........................................................................................................................25
13.2.1. Mechanical function test .................................................................................................25
13.2.2. Electrical function test....................................................................................................25
14. Factory reset...................................................................................................... 25
15. Status and error messages ................................................................................. 26
15.1. LED displays ................................................................................................................................26
15.2. Status messages..........................................................................................................................27
15.3. Error messages............................................................................................................................28
15.4. Acknowledging error messages.....................................................................................................29
16. Technical data .................................................................................................... 30
16.1. Technical data for safety switch CTM-LBI ........................................................................................30
16.1.1. Typical system times......................................................................................................31
16.2. Radio frequency approvals.............................................................................................................32
16.3. Dimension drawing for safety switch CTM… ...................................................................................33
16.4. Technical data for actuator A-B-A1-A1-….........................................................................................34
16.4.1. Dimension drawing for actuator A-B-A1-A1-… ...................................................................34
16.5. Technical data for actuator A-B-A5-A1-….........................................................................................35
16.5.1. Dimension drawing for actuator A-B-A5-A1-… ...................................................................35
17. Ordering information and accessories................................................................. 36
18. Inspection and service ........................................................................................ 36
19. Service .............................................................................................................. 36
20. Declaration of conformity ................................................................................... 36

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
4(translation of the original operating instructions) MAN20001661-01-05/23
1. About this document
1.1. Scope
These operating instructions are valid for all CTM-LBI-BP/BR-..D… with Control of Guard Locking via IO-Link from version
V1.0.X to version V1.3.X. These operating instructions, the document Safety information and any available data sheet form
the complete user information for your device.
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 Meaning
Printed document
Internet
www Document is available for download at www.euchner.com
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
1.4. Supplementary documents
The overall documentation for this device consists of the following documents:
Document title
(document number) Contents
Safety information
(2525460) Basic safety information
Operating instructions
(MAN20001661) (this document)
Internet
www
Declaration of conformity Declaration of conformity
Internet
www
Possibly available data
sheet Item-specic information about deviations or additions
Internet
www
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.

5
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
2. Correct use
Safety switches series CTM-LBI-BP/BR-..D… with Control of Guard Locking via IO-Link are interlocking devices with guard
locking solenoid for process protection (type4). The device complies with the requirements according to EN60947-5-3.
Devices with unicode evaluation possess a high coding level, devices with multicode evaluation possess a low coding level.
Connection to a BR/IO-Link Gateway is required for the use of this safety switch.
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 released 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.
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
ÌIEC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60204-1
The safety switch is allowed to be operated only in conjunction with the intended EUCHNER actuators and the related con-
nection components from EUCHNER. On the use of different actuators or other connection components, EUCHNER provides
no warranty for safe function.
Safety switches in the version CTM-…-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 this in the speci-
cations of the device in question.
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.
ÌIt is only allowed to use components that are permissible in accordance with the table below.
Table 1: Possible combinations for CTM components
Safety switch
Actuator
A-B-A1-… A-B-A5-…
CTM-… Unicode/Multicode
Key to symbols Combination possible

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
6(translation of the original operating instructions) MAN20001661-01-05/23
3. Description of the safety function
Devices from this series feature the following safety functions:
Monitoring of guard locking and the position of the guard
(interlocking device with guard locking according to ENISO14119)
ÌSafety function (see chapter 6.5. Switching states on page 10):
- The safety outputs are switched off when guard locking is released (monitoring of the locking element).
- The safety outputs are switched off when the guard is open (monitoring of the door position).
ÌSafety characteristics: category, Performance Level, PFHD(see chapter 16. Technical data on page 30).
The following additionally applies in a BR series connection:
ÌThe safety outputs are switched on only when the device receives a corresponding signal from its predecessor in the chain.
NOTICE
You can regard the complete BR device chain as one subsystem during calculation. The following
calculation method applies to the PFHDvalue:
#1
PFHD,1 PFHD,ext
BR-Device #1 ... n External Evaluation
(e.g. PLC)
PFHDges =∑ PFHD,k + PFHd,ext
n
k=1
#2
PFHD,2
#n
PFHD,n
Alternatively, the simplied method according to section 6.3 of ENISO13849-1:2015 can be used
for calculation.
Control of guard locking via IO-Link communication
If the device is used as guard locking for personnel protection, control of guard locking must be regarded as a safety function.
The device does not feature a safety characteristic for the control of the guard locking.

7
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
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 safeguard particularly
Ìafter any setup work
Ìafter the replacement of a system component
Ìafter an extended period without use
Ìafter every fault
Independent of these checks, the safe function of the safeguard must be checked at suitable intervals as part of the main-
tenance 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 ineffective.
On this topic pay attention in particular to the measures for reducing the possibility of bypassing
according to ENISO14119:2013, section 7.
ÌThe switching operation must be triggered only by actuators designated for this purpose.
ÌPrevent bypassing by means of replacement actuators (only for multicode evaluation). For this pur-
pose, restrict access to actuators and to keys for releases, for example.
ÌDamaged actuators can lead to limited prevention of inadvertent locking position (faulty closure
protection) when the machine is switched on. The guard locking function can no longer be ensured if
an actuator is broken. Opening the door will immediately turn off the safety outputs. Regularly check
the actuator for mechanical damage.
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. You can download the operating
instructions from www.euchner.com.

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
8(translation of the original operating instructions) MAN20001661-01-05/23
6. Function
The device permits the locking of movable guards.
The system consists of the following components: coded actuator (transponder) and switch.
Connection to a BR/IO-Link Gateway is required for the use of this safety switch, because
control of guard locking is performed via IO-Link communication.
Whether the device learns the complete actuator code (unicode) or not (multicode) depends
on the respective version.
ÌDevices with unicode evaluation: The actuator must be assigned to the safety switch
by a teach-in operation so that it is detected by the system. This unambiguous assignment
ensures a particularly high level of protection against tampering. The system thus possesses
a high coding level.
ÌDevices with multicode evaluation: Unlike systems with unicode evaluation, on multi-
code devices a specic code is not requested but instead it is only checked whether the
actuator is of a type that can be detected by the system (multicode evaluation). There
is no exact comparison of the actuator code with the taught-in code in the safety switch
(unicode evaluation). The system possesses a low coding level.
When the guard is closed, the actuator is moved into the safety switch. Guard locking can be
activated only when the actuator is located in the switch (prevention of inadvertent locking
position (faulty closure protection)). When the operating distances are reached, power is supplied to the actuator by the
switch and data are transferred.
The door position signal OD is set when a permissible code is detected. Guard locking is activated automatically when bit
CL is set (bit CL=0). The safety outputs are switched on when guard locking is active.
The safety outputs are switched off and the guard locking signal OL is cleared when guard locking is released.
In the event of a fault in the safety switch, the safety outputs are switched off and the DIA LED illuminates red. The occurrence
of faults is detected at the latest on the next demand to close the safety outputs (e.g.on starting).
6.1. Bistable guard locking
Guard locking of the switch functions according to the bistable principle. This means that guard locking is kept in its last
position if the switch’s power supply is interrupted or when the machine is switched off for servicing, for example. As a result,
the safety door is either constantly locked or it can be closed and opened as required without activating the guard locking.
Guard locking is released via IO-Link communication. See also chapter 6.4. Guard locking on page 9.
6.2. Guard lock monitoring
All versions feature two safe outputs for monitoring guard locking. The safety outputs FO1A and FO1B are switched off
when guard locking is released.
6.3. Monitoring outputs/status bits
Depending on version, the signals listed in the following are available as a status bit or at the monitoring output. The status
bits are evaluated via the BR/IO-Link Gateway. Please refer to the corresponding data sheet for further information.
6.3.1. Door position signal OD
The door position signal is sent as soon as the actuator is inserted into the switch head (state: guard closed and not locked).
The signal is also present if the guard locking is active.
6.3.2. Diagnostic signal OI
The diagnostic signal is present if there is an error (switch-on condition as for DIA LED).
Transponder-coded
actuator
Safety switch

9
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
6.3.3. Guard locking signal OL
The guard locking signal is present if the guard locking is active.
6.3.4. Status signal OM
The status signal is present if the device’s safety outputs are switched.
6.3.5. Locking element signal OLS
The locking element signal is present if the locking element is stuck and guard locking cannot be released. The signal is
reset as soon as the actuator is no longer under tensile stress or the locking element is no longer stuck.
6.3.6. Communication connection C
A monitoring output with the sufx C has the additional function of providing a communication connection to a BR/IO-Link
Gateway. The switch delivers cyclical and acyclical data. You will nd an overview of the communication data in chapter12.
Using communication data on page 21.
If no BR/IO-Link Gateway is connected, this output behaves like a monitoring output.
6.4. Guard locking
Important!
Malfunctions due to incorrect use.
ÌThe actuator must not be under tensile stress during release.
ÌVery strong jolts or vibration can cause the guard locking state to change unintentionally. This gen-
erally applies when the switch is electrically isolated.
- The switch must not be used as a mechanical end stop.
- In case of heavy doors, ensure that the impact energy is cushioned on closing.
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 remains
released. This prevents people from being locked in unintentionally.
Control of guard locking via IO-Link communication
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: guard locking actuated by spring force and controlled by bitCL (bitCL=0).
Releasing guard locking: guard locking released by the device’s operating voltage and deactivated by bitCL (bitCL=1).

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
10 (translation of the original operating instructions) MAN20001661-01-05/23
6.5. Switching states
The detailed switching states for your switch can be found in chapter 15. Status and error messages on page 26. All
safety outputs, signals and display LEDs are described there.
Guard closed and locked Guard closed and not locked Guard being opened Guard open
Bit CL 0 1 1
off = Guard locking is
activated immediately
on closing
on = Guard locking remains
released on closing
Safety outputs FO1A and FO1B on off off off
Guard locking signal OL on off off off
Door position signal OD on on on off

11
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
7. Manual release
Important!
ÌAll release functions latch when the device is electrically isolated.
ÌGuard locking remains released when the release function is reset.
Some situations require the guard locking to be released manually (e.g. malfunctions or an emergency). A function test must
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:
7.1. Auxiliary release
In the event of malfunctions, the guard locking can be released with the auxiliary release irre-
spective of the state of the solenoid.
Important!
ÌThe actuator must not be under tensile stress during manual release.
ÌLoss of the release function due to mounting errors or damage during
mounting.
ÌCheck the release function every time after mounting.
ÌAfter manual release, the solenoid must be energized briey to re-es-
tablish guard locking.
ÌThe auxiliary release is not a safety function.
ÌThe correct function must be checked at regular intervals.
ÌObserve the notes on any available data sheets.
Actuating auxiliary release
1. Remove seal label or make a hole.
2. Using a screwdriver, turn the auxiliary release to in the direction of the arrow.
¨Guard locking is released.
¨The safety outputs are switched off.
¨The guard locking signal OL is switched off. The diagnostic signal OI is switched on.
3. Using a screwdriver, turn the auxiliary release to in the opposite direction to the arrow to reset.
4. Seal with sealing lacquer.
5. Close the guard.
6. Perform a reset; see Plausibility errors in chapter 15.3. Error messages.
¨The device operates normally again.
7. Check correct function of the device.
Auxiliary
release

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
12 (translation of the original operating instructions) MAN20001661-01-05/23
8. Mounting
CAUTION
Safety switches must not be bypassed (bridging of contacts), turned away, removed or otherwise
rendered ineffective.
ÌObserve ENISO14119:2013, section 7, for information about reducing the possibilities for bypassing
an interlocking device.
NOTICE
Risk of damage to equipment and malfunctions as a result of incorrect installation.
ÌSafety switches and actuators must not be used as an end stop.
ÌObserve EN ISO 14119:2013, sections 5.2 and 5.3, for information about mounting the safety
switch and the actuator.
ÌProtect the switch against damage, as well as against penetrating foreign objects such as swarf,
sand and blasting shot, etc.
ÌObserve the min. door radii (see chapter 16.3. Dimension drawing for safety switch CTM… on page 33).
ÌObserve the maximum permissible angle between switch and actuator (max. 5°).
ÌObserve the tightening torque for fastening the switch and the actuator (max. 2.9Nm).
ÌThe rear side of the switch and the actuator’s plate must lie fully on the mounting surface.
ÌActuator and safety switch must be mounted such that the actuator is perpendicularly and com-
pletely inserted into the switch when the guard is closed. The guard locking function is not assured
if installation is incorrect.
ÌThe following applies to devices with connecting cable: In areas where high-pressure cleaners are
used, ensure that the high-pressure cleaner jet does not act directly on the connecting cable or the
cable entry into the device. Potential damage due to the high-pressure cleaner can result in the degree
of protection IP69K no longer being achieved.
ÌWhen mounting several safety switches, observe the stipulated minimum distance to avoid mutual
interference.
20
40
40

13
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
9. Electrical connection
The following connection options are available:
ÌSeparate operation
ÌSeries connection with wiring in the control cabinet
ÌSeries connection with Y-distributors
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
ÌTo ensure safety, both safety outputs must always be evaluated.
ÌMonitoring outputs must not be used as safety outputs.
ÌLay the connecting cables with protection to prevent short circuits.
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
ÌDo not use a control system with pulsing or switch off the pulsing function in your control system.
The device generates its own test pulses on the safety outputs. A downstream control system must
tolerate these test pulses, which may have a length of up to 300µs. Depending on the inertia of the
downstream device (control system, relay, etc.), this can lead to short switching processes.
The test pulses are output only with the safety outputs switched off during device start.
ÌThe inputs on a connected evaluation unit must be positive switching, as the two outputs on the safety
switch deliver a level of +24V in the switched-on state.
ÌAll the electrical connections must either be isolated from the mains supply by a safety transformer
according to IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent
insulation measures (PELV).
ÌAll electrical outputs must have an adequate protective circuit for inductive loads. The outputs must
be protected with a free-wheeling diode for this purpose. RC interference suppression units must
not be used.
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.
ÌTo 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 EN60204-1 (EMC).
ÌPay attention to any interference elds from devices such as frequency converters or induction
heating systems. Observe the EMC instructions in the manuals from the respective manufacturer.
Important!
If the device does not appear to function when the operating voltage is applied (e.g. green STATE LED
does not ash), the safety switch must be returned to the manufacturer.

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
14 (translation of the original operating instructions) MAN20001661-01-05/23
9.1. Notes about
Important!
ÌThis device is intended to be used with a Class 2 power source in accordance with UL1310.
As an alternative an LV/C (Limited Voltage/Current) power source with the following properties can
be used:
This device shall be used with a suitable isolating source in conjunction with a fuse in accordance
to UL248. The fuse shall be rated max. 3.3A and be installed in the max. 30V DC power supply
to the device in order to limit the available current to comply with the UL requirements. Please note
possibly lower connection ratings for your device (refer to the technical data).
ÌFor use and application as per the requirements of UL 1) a connecting cable listed under the UL
category code CYJV/7, min. 24AWG, min. 80°C, must be used.
1) Note on the scope of the UL approval: the devices have been tested as per the requirements of UL508 and CSA/ C22.2 no. 14 (protection against electric shock and re).
9.2. Safety in case of faults
ÌThe operating voltage at UB is reverse polarity protected.
ÌThe safety outputs FO1A/FO1B are short circuit-proof.
ÌA short circuit between the safety outputs is detected on starting or when the safety outputs are activated by the device.
ÌA short circuit in the cable can be excluded by laying the cable with protection.
9.3. Fuse protection for power supply
The power supply must be provided with fuse protection depending on the number of switches and the current required for
the outputs. The following rules apply:
Max. current consumption of an individual switch Imax
Imax = IUB + IFO1A+FO1B + IOX
IUB = Switch operating current (max. 500mA)
IOX = Load current of monitoring outputs (max. 50mA per monitoring output)
IFO1A+FO1B = Load current of safety outputs FO1A + FO1B (2xmax. 150mA)
Important!
If there are further monitoring outputs, their load current must also be taken into account.
Max. current consumption of a switch chain ΣImax
ΣImax = IFO1A+FO1B + nx(IUB + IOX)
n = Number of connected switches

15
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
9.4. Requirements for connecting cables
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connecting cables.
ÌUse connection components and connecting cables from EUCHNER.
ÌOn the use of other connection components, the requirements in the following table apply. EUCHNER
provides no warranty for safe function in case of failure to comply with these requirements.
Observe the following requirements with respect to the connecting cables:
Parameter Value Unit
M12 / 8-pin
Recommended cable type LIYY8x0.34 mm²
Cable 8x0.34 mm²
Cable resistance R max. 80 W/km
Inductance L max. 0.65 mH/km
Capacitance C max. 120 nF/km
9.5. Connector assignments
9.5.1. Connector assignment of safety switch CTM-…-BR-…-AZD-SA-… with plug connector M12, 8-pin
Plug connector
(view of connection side) Pin Designation Function
Conductor color-
ing of connecting
cable 1)
1 x M12
8
5
6
7
2
4
3
1
1 FI1B Enable input, channel B WH
2 UB Electronics and solenoid operating voltage, 24V DC BN
3 FO1A Safety output, channelA GN
4 FO1B Safety output, channelB YE
5 Ox/C 2) Door position or guard lock monitoring output/communication GY
6 FI1A Enable input, channel A PK
7 0VUB Electronics and solenoid operating voltage, 0V DC BU
8 – n.c. RD
1) Only for standard EUCHNER connecting cable
2) Monitoring output Ox can assume the function OD (door position) or OL (guard locking). More detailed information about your device is available at
www.euchner.com. Simply enter the order number.
9.6. Notes on operation with safe control systems
Observe the following guidelines for connection to safe control systems:
ÌUse a common power supply for the control system and the connected safety switches.
ÌA pulsed power supply must not be used for UB. Tap the supply voltage directly from the power supply unit. If the power
supply is connected to a terminal of a safe control system, this output must provide sufcient electrical current.
ÌThe safety outputs FO1A and FO1B can be connected to the safe inputs of a control system. Prerequisite: the input must be
suitable for pulsed safety signals (OSSD signals, e.g. from light grids). The control system must tolerate test pulses on the
input signals. This normally can be set up by parameter assignment in the control system. Observe the notes of the control
system manufacturer. For the test pulse duration of your safety switch, refer to chapter 16. Technical data on page 30.
ÌWith series connection: Always connect inputs FI1A and FI1B directly to a power supply unit or to outputs FO1A and FO1B
of another EUCHNER BR device. Pulsed signals must not be present at inputs FI1A and FI1B.
A detailed example of connecting and setting the parameters of the control system is available for many devices at
www.euchner.com, in the area Service/Downloads/Applications/CTM. The features of the respective device are dealt with
there in greater detail.

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
16 (translation of the original operating instructions) MAN20001661-01-05/23
10. Connection of a single CTM-BP/BR (separate operation)
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
ÌTo ensure safety, both safety outputs FO1A and FO1B must always be evaluated.
Important!
The example shows only an excerpt that is relevant for connection of the CTM system. The example
illustrated here does not show complete system planning. The user is responsible for safe integration
into the overall system. Detailed application examples can be found at www.euchner.com. Simply enter
the order number of your switch in the search box. You will nd all available connection examples for
the device in Downloads.
Connected load
BR Evaluation unit/
IO-Link
Safety Outputs
Door
Monitoring
Safety Inputs
Monitoring Output
Read Head
Actuator
FO1A
3
FO1B
4
FI1A
6
FI1B
1
-B1
EUC.167797
CTM-LBI-BR-U-AZD-SA-167797
UB
2
0 V
UB
7
OD/C
5
1
2
-F1
24V DC
0 V
24V DC
0 V
Fig. 1: Connection example with control of guard locking via IO-Link (principle of operation)

17
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
11. Connection of several devices in a chain (series connection)
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
ÌTo ensure safety, both safety outputs FO1A and FO1B must always be evaluated.
Important!
ÌA BR chain may contain a maximum of 20 devices.
ÌThe example shows only an excerpt that is relevant for connection of the CTM system. The example
illustrated here does not show complete system planning. The user is responsible for safe integration
into the overall system. Detailed application examples can be found at www.euchner.com. Simply
enter the order number of your switch in the search box. You will nd all available connection exam-
ples for the device in Downloads.
ÌMake sure you use the correct Y-distributors. See chapter 11.2.3. Connector assignment of Y-dis-
tributor for series connection with IO-Link communication on page 19.
11.1. Series connection with wiring in the control cabinet
The series connection can be realized via additional terminals in a control cabinet.
Important!
In case of series connection with IO-Link communication:
ÌThe safety outputs are permanently assigned to the respective safety inputs of the downstream
switch. FO1A must be routed to FI1A and FO1B to FI1B.

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
18 (translation of the original operating instructions) MAN20001661-01-05/23
11.2. Series connection with Y-distributors
The series connection is shown here based on the example of the version with plug connector M12. The switches are con-
nected one behind the other with the aid of pre-assembled connecting cables and Y-distributors. If a safety door is opened
or if a fault occurs on one of the switches, the system shuts down the machine.
11.2.1. Maximum cable lengths with BR switch chains
Important!
The maximum number of switches in a BR switch chain depends on many factors, including the cable
length. This case example shows a standard application. You will nd further connection examples at
www.euchner.com.
SPS
PLC
l1l2
l
max
=200 m
ln
umin = 24 V
5 x 0,34 mm25 x 0,34 mm2 5 x 0,34 mm2
CTM-LBI-BR # n CTM-LBI-BR # n-1 CTM-LBI-BR # 1
iout
11.2.2. Determining cable lengths
n
Max. number of switches depending on the cable
length
IFO1A/FO1B (mA)
Possible output current per channel FO1A/FO1B
l1(m)
Max. cable length from the last switch to the
control system
0.34 mm²
1
10
70
25
50
100
150 60
2
10
20
25
50
100
150
3
10
20
25
50
100
150
41)
10
20
25
50
100
150
1) With solenoid control at an interval of 500ms.

19
MAN20001661-01-05/23 (translation of the original operating instructions)
Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
EN
11.2.3. Connector assignment of Y-distributor for series connection with IO-Link communication
Important!
ÌThese Y-distributors can be used only with device variants that control guard locking via IO-Link communication.
ÌThe switch chain must always be terminated with strapping plug 097645.
Plug connector X1 Y-distributor Plug connector X2 / X3
X1
Pin Function
X1.1 FI1B
X1.2 UB
X1.3 FO1A
X1.4 FO1B
X1.5 C
X1.6 FI1A
X1.7 0VUB
X1.8 n.c.
X1
Socket
6
5
8
4
3
2
7
1
157913
X1
X2
X3
X2
Plug
1
1
5
5
4
4
3
3
2
2
X3
Socket
X2
Pin Function
X2.1 UB
X2.2 FO1A
X2.3 0 V
X2.4 FO1B
X2.5 C
X3
Pin Function
X3.1 UB
X3.2 FI1A
X3.3 0 V
X3.4 FI1B
X3.5 C
X1
Socket
5
8
4
3
6
7
1
2
158192
158193
X1
X2
X3
With connecting cable
X2
Plug
5
1
43
2
5
1
4
3
2
X3
Socket

Operating Instructions
Transponder-Coded Safety Switch CTM-LBI-BP/BR-..D
20 (translation of the original operating instructions) MAN20001661-01-05/23
Bridging plug
1 2 4
Y-distributor / IO-Link Y-distributor / IO-Link
Connected load
BR/BP/IO-Link Evaluation
Safety Outputs
Door
Monitoring
Safety Inputs
Monitoring Output
Read Head
Actuator
FO1A
3
FO1B
4
FI1A
6
FI1B
1
UB
2
0 V UB
7
OD/C
5
n.c.
8
Safety Outputs
Door
Monitoring
Safety Inputs
Monitoring Output
Read Head
Actuator
FO1A
3
FO1B
4
FI1A
6
FI1B
1
UB
2
0 V UB
7
OD/C
5
n.c.
8
1:FI1B 6:FI1A 8:NC7:0V UB 2:UB 3:FIOA 4:FO1B5:C 1:FI1B 6:FI1A 8:NC7:0V UB 2:UB 3:FIOA 4:FO1B5:C
1:UB 3:0V UB 5:C 2:FI1A 4:FI1B
1:UB
3:0V UB
5:C
2:FO1A
4:FO1B
1:UB 3:0V UB 5:C 2:FI1A 4:FI1B
1:UB
3:0V UB
5:C
2:FO1A
4:FO1B
1 2
-F1
24V DC
0 V
24V DC
0 V
Fig. 2: Connection example for series connection with control of guard locking via IO-Link communication (principle of
operation)