Manual Safety relays 3TK2845 multifunction device...Important notes 3TK2845 Multifunction Device Manual iv NEB926208722000/RS-AC/005 Standards and approvals You can use the 3TK2845

Important notes Table of Contents

Product description 1

Functional information 2

Technical data 3

Mounting, wiring, commissioning

4

Applications 5

Safety relays

Manual

Edition 07/2015 3TK2890-0B

3TK2845 multifunction device

NEB926208722000/RS-AC/005

Last update: 09 July 2015

Safety Notices This manual contains information that you should observe to ensure your own personal safety and prevent material damage. The instructions for your personal safety are marked by a safety alert symbol. Instructions relating solely to material damage are not marked by a safety alert symbol. Depending on the degree of hazard, the warning information is shown as follows in decreasing sequence:

Dangerindicates that death or serious injury will result if proper precautions are not taken.

Warningindicates that death or severe personal injury may result if proper precautions are not taken.

Cautionwith a safety alert symbol indicates that minor personal injury can result if proper precautions are not taken.

Cautionindicates that property damage may result if proper precautions are not taken.

Noticeindicates that an undesirable event or state may arise if the relevant notes are not observed.

In the event of a number of levels of danger occurring simultaneously, the warning corresponding to the high-est level of danger is always used. A warning on a safety alert symbol indicating possible personal injury may also include a warning relating to material damage.

Qualified personnelThe product/system to which this documentation relates may only be used/operated by personnel qualified for the respective tasks, taking account of the appropriate documentation for those tasks,in particular, the safety and warning notices contained in the documentation. Qualified personnel are defined aspersons who are able, thanks to their training and experience in handling these products/systems, to recognizerisks and avoid potential hazards.

Intended useNote the following:

WarningSiemens products may only be used for the applications described in the catalog and the associated technical documentation. If third-party products or components are to be used, they must be recommended or approved by Siemens. To ensure trouble-free and safe operation of the products, they must be appropriately transported, stored, assembled, installed, commissioned, operated and maintained. The permissible environ-mental conditions must be maintained. The notes in the associated documentation must be complied with.

SIEMENS AGIndustry SectorP.O. Box 4848D-90026 Nuremberg, Germany

Siemens AG 2007Technical data subject to change.

Copyright Siemens AG 2007 All rights reserved

The reproduction, transmission, or use of this document or its con-tents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by pat-ent grant or registration of a utility model or design are reserved.

Disclaimer of liability

We have reviewed the contents of this publication to ensure consis-tency with the hardware and software described. Since variance can-not be precluded entirely, we cannot guarantee full consistency. Theinformation in this publication is reviewed regularly and any neces-sary corrections are included in subsequent editions. We welcomeany suggestions for improvement.

Technical Assistance: Phone: +49 (911) 895-5900 (8°° - 17°° CET) Fax: +49 (911) 895-5907e-mail: [email protected]: www.siemens.com/sirius/technical-assistance

mailto:[email protected]://www.siemens.com/sirius/technical-assistance

Table of Contents

1 Product description 1-1

1.1 3TK2845 multifunction device . . . . . . . . . . . . . . . . . . . . . . . 1-21.2 Function, properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.2.1 Several safety functions combined in one enclosure . . . . . . . . . . . . 1-41.2.2 Examples of using 3TK2845 modules . . . . . . . . . . . . . . . . . . . 1-61.3 3TK2845 order numbers . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

2 Functional information 2-1

2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.1.1 Function description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52.1.2 Symbol description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62.2 Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72.2.1 3TK2845-.HB.. "Monitored and automatic start" . . . . . . . . . . . . . . 2-72.2.2 3TK2845-.DB.. "Monitored start" . . . . . . . . . . . . . . . . . . . . . . 2-122.2.3 3TK2845-.EB.. "Enabling button" . . . . . . . . . . . . . . . . . . . . . . 2-162.2.4 3TK2845-.FB.. "Spring force interlocked tumbler" . . . . . . . . . . . . . . 2-212.2.5 3TK2845-.GB.. "Magnetic force interlocked tumbler" . . . . . . . . . . . . 2-24

3 Technical data 3-1

3.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23.2 Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43.3 Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53.4 Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

4 Mounting, wiring, commissioning 4-1

4.1 Mounting and coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44.3 Meaning of the LED indicators . . . . . . . . . . . . . . . . . . . . . . . 4-6

5 Applications 5-1

5.1 3TK2845-.HB40 "Monitored start and automatic start", instantaneous outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.2 3TK2845-.HB41 "Monitored start and automatic start", time-delayed outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.3 3TK2845-.DB40 "Monitored startup", instantaneous outputs . . . . . . . . 5-65.4 3TK2845-.DB41 "Monitored start", time-delayed outputs . . . . . . . . . . 5-85.5 3TK2845-.EB40 "Enabling button" . . . . . . . . . . . . . . . . . . . . . . 5-105.6 3TK2845-.FB41/2/4 "Spring force interlocked tumbler" . . . . . . . . . . . 5-125.7 3TK2845-.GB41/2/4 "Magnetic force interlocked tumbler" . . . . . . . . . 5-14

3TK2845 Multifunction Device ManualNEB926208722000/RS-AC/005 i

3TK2845 Multifunction Device Manualii NEB926208722000/RS-AC/005

Important notes

Important notes

Purpose of the manualThe information provided in this manual is intended to assist with the configura-tion of safety-oriented functions as part of an overall installation or machine.

Target groupThis manual is aimed at people with the required qualifications to commission and operate the 3TK2845 multifunction device.

Scope of validityThis manual applies to multifunction devices with the following order numbers:3TK2845-.HB40 *)3TK2845-.HB41 *)3TK2845-.HB42 *)3TK2845-.HB44 *)

3TK2845-.DB40 *)3TK2845-.DB41 *)3TK2845-.DB42 *)3TK2845-.DB44 *)

3TK2845-.EB40 *)3TK2845-.EB41 *)3TK2845-.EB42 *)3TK2845-.EB44 *)

3TK2845-.FB41 *)3TK2845-.FB42 *)3TK2845-.FB44 *)

3TK2845-.GB41 *)3TK2845-.GB42 *)3TK2845-.GB44 *)

*) 8th position in order no.: 1 = screw terminal, 2 = spring-loaded terminal

Shutdown response to power failure / device failure:On all 3TK28 devices, safety integrity level SIL CL 3 refers to the outputs with stop category 0. The time-delayed outputs are redundantly configured but can-not guarantee the set time in case of a failure (e.g. loss of power supply, device failure). These devices enter the safe state in the event of a failure, which always means that the outputs go to "zero" in this case.

3TK2845 Multifunction Device ManualNEB926208722000/RS-AC/005 iii

Important notes

Standards and approvalsYou can use the 3TK2845 safety relays in EMERGENCY-STOP facilities comply-ing with ISO 13850 (09.2008) and in safety circuits complying with EN 60204-1 (06.2007), e.g. for moving covers and protective doors or contactless protective equipment conforming to IEC 61496-1 (03.2009). Depending on the external wiring, PLe in accordance with DIN EN ISO 13849-1(12.2008) or SIL CL 3 in accordance with IEC 62061:2005 (02.2011) must be achieved.

Installation noteMeasures to be taken to improve immunity to conducted radio- frequency interference:o Spatial separation of sensitive circuits from interference sourceso Use of twisted-conductor cableso Sufficient distance between conductors emitting interference and the con-

ductors of sensitive circuitso Right-angled crossing of cables and conductors where possibleo Routing of the conductors as close as possible to the ground planeo Use of electrostatic / electromagnetic shields

Disclaimer of liabilityThe products described here have been developed to carry out safety-oriented functions as part of a complete plant or machine. A complete safety-oriented system generally features sensors, evaluation units, signaling units, and reliable shutdown concepts. It is the responsibility of the manufacturer to ensure that a system or machine is functioning properly as a whole. Siemens AG, its regional offices, and associated companies (hereinafter referred to as "Siemens") cannot guarantee all the properties of an entire plant, system or machine that has not been designed by Siemens.

Nor can Siemens assume liability for recommendations that appear or are implied in the following description. No new guarantee, warranty, or liability claims above those standard to Siemens can be derived from the following description.

Up-to-the-minute informationYou can obtain further assistance by calling the following numbers:

Technical Assistance: Phone: +49 (911) 895-5900 (8°° - 17°° CET)Fax: +49 (911) 895-5907

or on the Internet at:

e-mail: [email protected]: www.siemens.com/sirius/technical-assistance

SIEMENS AG, Technical AssistanceBreslauer Str. 5D-90766 Fuerth, Germany

Correction sheetA correction sheet is included at the end of this manual. Please use it to enter your suggestions for improvements, additions and corrections, and send it back to us. This will help us to improve the next edition of the manual.

3TK2845 Multifunction Device Manualiv NEB926208722000/RS-AC/005

http://www.siemens.com/sirius/technical-assistancehttp://www.siemens.com/sirius/technical-assistance

Product description 1

Chapter Subject Page

1.1 3TK2845 multifunction device 1-2

1.2 Function, properties 1-3

1.3 3TK2845 order numbers 1-7

3TK2845 Multifunction Device ManualNEB926208722000/RS-AC/005 1-1

Product description

1.1 3TK2845 multifunction device

Fig. 1-1: Illustration of the device version with screw connection, instantaneous enabling circuit

Fig. 1-2: Illustration of the device version with spring-loaded terminals, delayed enabling circuits

3TK2845 Multifunction Device Manual1-2 NEB926208722000/RS-AC/005

Product description

1.2 Function, properties

The 3TK2845 multifunction device is used to implement safety-related functions such as EMERGENCY-STOP monitoring, protective door monitoring and moni-toring functions using contactless protective equipment (ESPE) such as light curtains and safety shutdown mats in machines with movable components.

The device is especially suited for:

– Use on machines that operate without an interface to a bus system (stand-alone operation)

– Use on machines requiring several protection functions (e.g. EMERGENCY-STOP and a protective door, enabling button and protective door and locked protective door tumblers)

– Use on machines having components which must be switched off during operation (e.g. for servicing)

The advantage of using this device is the fact that several safety-related func-tions can be implemented using only one 3TK2845 multifunction device rather than using several safety relays. In addition, the device is also suited for opera-tional switching, cascading and adding safety relays either using contacts or switching electronically.

Note:Under the link https://support.industry.siemens.com/cs/ww/en/ps/16391/dl "Simulation safety switching device 3TK2845", you will find a simulation of the devices that will illustrate the functionality for you.


https://support.industry.siemens.com/cs/ww/en/ps/16391/dl

Product description

1.2.1 Several safety functions combined in one enclosure

Conventional designUntil now, common combinations of safety applications such as EMERGENCY-STOP and protective door monitoring could only be implemented by using sev-eral individual safety relays (as in the example shown; Fig. 1-3).

Fig. 1-3: Versions: 3TK2841 One safety relay required per safety function


Product description

Configuration with 3TK2845Multifunction devices of the 3TK2845 series combine several functions in one device.These devices are suitable for monitoring up to two safe 2-channel sensors and 1 safe 1-channel sensor (cascading input) and they also offer you the option of connecting a mode switch.Two solid-state enabling circuits and two relay enabling circuits ensure safe shutdown here.

Fig. 1-4: Versions: 3TK2845 EMERGENCY-STOP and protective door monitoring + key-operated switch for bridging the protective door in maintenance mode


Product description

1.2.2 Examples of using 3TK2845 modules

Monitoring of EMERGENCY-STOP and positioning switches with possible main-tenance for intervening in a secured area.

Monitoring of position switches and possible operation using an enabling button in "unsafe" mode (maintenance).


Product description

1.3 3TK2845 order numbers

Monitored and automatic start

Monitored start

Enabling button

Spring force interlocked tumblers

Magnetic force interlocked tumblers

Screw terminal Spring-loeaded terminal Time delay 3TK2845-1HB40 3TK2845-2HB40 instantaneous 3TK2845-1HB41 3TK2845-2HB41 time-delayed 0.05 … 3 s 3TK2845-1HB42 3TK2845-2HB42 time-delayed 0.5 … 30 s 3TK2845-1HB44 3TK2845-2HB44 time-delayed 5 … 300 s

Screw terminal Spring-loaded terminal Time delay 3TK2845-1DB40 3TK2845-2DB40 instantaneous 3TK2845-1DB41 3TK2845-2DB41 time-delayed 0.05 … 3 s 3TK2845-1DB42 3TK2845-2DB42 time-delayed 0.5 … 30 s 3TK2845-1DB44 3TK2845-2DB44 time-delayed 5 … 300 s

Screw terminal Spring-loaded terminal Time delay 3TK2845-1EB40 3TK2845-2EB40 instantaneous 3TK2845-1EB41 3TK2845-2EB41 time-delayed 0.05 … 3 s 3TK2845-1EB42 3TK2845-2EB42 time-delayed 0.5 … 30 s 3TK2845-1EB44 3TK2845-2EB44 time-delayed 5 … 300 s

Screw terminal Spring-loaded terminal Time delay 3TK2845-1FB41 3TK2845-2FB41 time-delayed 0.05 … 3 s 3TK2845-1FB42 3TK2845-2FB42 time-delayed 0.5 … 30 s 3TK2845-1FB44 3TK2845-2FB44 time-delayed 5 … 300 s

Screw terminal Spring-loaded terminal Time delay 3TK2845-1GB41 3TK2845-2GB41 time-delayed 0.05 … 3 s 3TK2845-1GB42 3TK2845-2GB42 time-delayed 0.5 … 30 s 3TK2845-1GB44 3TK2845-2GB44 time-delayed 5 … 300 s


Product description


Functional information 2


2.1 General 2-2

2.1.1 Function description 2-5

2.1.2 Symbol description 2-6

2.2 Versions 2-7

2.2.1 3TK2845-.HB.. "Monitored and automatic start" 2-7

2.2.2 3TK2845-.DB.. "Monitored start" 2-12

2.2.3 3TK2845-.EB.. "Enabling button" 2-16

2.2.4 3TK2845-.FB.. "Spring force interlocked tumbler" 2-21

2.2.5 3TK2845-.GB.. "Magnetic force interlocked tumbler" 2-24


Functional information

2.1 General

SIRIUS safety relays and the safety chainA safety chain generally consists of the functions detection, evaluation and switching-off.Detection:

– This means the sensing of a safety requirement, e.g. when an EMERGENCY-STOP facility is actuated or a hazardous area protected by sensors such as light arrays or laser scanners is entered.

Evaluation: – This means the detection of a safety requirement and the safe initiation of the

reaction (e.g. switching-off of the enabling circuits).– This means the monitoring of the correct functioning of the actuator and the

sensor.

Switching-off: – This means the switching-off of the hazard (e.g. of a power supply via the

downstream contactors).

SIRIUS safety relays play a role in the evaluation and reaction part of this safety chain.The safety functions are shown in a uniform schematic diagram (refer to Chapter 2.2) for a quick overview of the special functions of the individual device types.The sensor interface inputs, the actuator interface outputs and enabling circuits, as well as the special safety logic can all be seen at a glance.

Cascading input1. Safe linking of safety relaysIn this application a higher-level safety relay switches off the 3TK2845 via a safe output and the cascading input.Example: A -- higher-level -- EMERGENCY-STOP circuit must switch off the whole system.Several lower-level functional groups (e.g. protective doors) with local switch-off can be operated.

NoticeWhen faults are ruled out (protected laying of the control lead), the application's safety category corresponds to that of the higher-level safety relay.

2. Additional safety sensor circuitThe cascading input is AND-connected with the sensor inputs Y12, Y22. PLc according to EN ISO 13849-1, or SIL CL 2 according to IEC 62061 can be achieved when the cascading input is wired to single-channel safety sensors (positive opening) and the routing of the connecting cable is protected. The start function is set to automatic start. Cascading input 1 can be switched with floating or solid-state switching elements. Both types of switching elements must be fed by the same power supply as the device.



3. Operational switchingThe cascading input can be used for operational (non-safe) switching. Switching is possible with floating or solid-state switching elements. Floating switching elements must be fed by the same power supply as the device.

4. Initial device start4.1 Cross-circuit detection:

o If a voltage of + 24 V DC is applied at Y35, cross-circuit evaluation between Y11/Y12 and Y21/Y22 is deactivated (necessary for non-floating sensors, e.g. light barriers).

o If a voltage of + 24 V DC is applied at Y65, cross-circuit evaluation between Y41/Y42 and Y51/Y52 is deactivated (necessary for non-floating sensors, e.g. light barriers).

o If no voltage is applied at Y35 or Y65, cross-circuit detection is active (necessary for pressure sensitive mats according to the cross-circuit principle, and non-floating sensors, e.g. EMERGENCY-STOP).

Note:If 1-channel sensors are used, Y35 (in the case of 1-channel sensor on Y12 or Y22 or Y65 (in the case of 1-channel sensor on Y42 or Y52)) must be supplied with a voltage of +24 V DC.

Note:If a pressure sensitive mat is used, it MUST be wired before switching on the device. Otherwise, the device will not detect the pressure sensitive mat, and a device fault will occur when the pressure sensitive mats are actuated.

5. Switch-on conditionso Voltage present at A1/A2.o Sensor circuit Y12/Y22 closed (exception in the case of variant

3TK2845-.EB4.).o Sensor circuit Y42/Y52 closed (exceptions during maintenance).o Cascading input supplied with 24 V DC.o Feedback circuit closed (supplied with 24 V DC).o An ON signal at Y34 is required for monitored start.

For the safe monitoring of device function, sensors and actuators, the state of all input variables must remain unchanged for at least 400 ms after the 3TK2845 outputs drop out. If, for example, a sensor circuit is closed during this time, a device fault occurs that can only be remedied by resetting the supply voltage.



6. Monitoring the ON buttono Both the positive and negative signal change are monitored on the ON button.o If the ON button is pressed for longer than 5s, the ON command is rejected in

the device and the device does NOT start when the ON button is released!o Monitored start requires status "1" at input Y34 as the start condition. When

this condition is fulfilled, the safe outputs become active, that is, they are set to "1" (depending on the device version).The start signal at input Y34 is only valid when the following applies:

- The time sequence of the START signal corresponds to the values"0 - 1 - 0".

- The value "1" must be present for 0.2 to 5 s.

7. Use of a 1-channel sensor connection on Y11/12, Y21/22, or Y41/42, Y51/52o If a single-channel sensor is to be connected to one of the two 2-channel

sensor inputs, cross-circuit detection must be deactivated for this sensor circuit. The single-channel sensor must be supplied with an external + 24 V DC signal in this case.

o If a single-channel sensor is desired at sensor input Y11/12, Y21/22, terminal Y35 must also be supplied with + 24 V DC

o If a single-channel sensor is desired at sensor input Y41/42, Y51/52, terminal Y65 must also be supplied with + 24 V DC.

8. Monitoring the feedback circuitsExternal actuators such as contactors or pneumatic valves are monitored with the feedback circuit.o The feedback circuit is tested for correct functioning when all enabling cir-

cuits are switched off (must be closed within 200 ms after switching off the enabling circuits). If the feedback circuit remains open after opening the enabling circuits, the device assumes a fault state (LED 24 & 44 flash). It must not be possible to switch the device on in this state.

o An ON command is not accepted during a fault in the feedback circuit.o If the fault in the feedback circuit is corrected, the device can be started again

as normal.o If an actuator with feedback is not used, feedback input Y64 must be supplied

with 24 V DC.



2.1.1 Function description

Automatic sensor detectionSensors such as EMERGENCY-STOP control devices or position switches and safety shutdown mats have different modes of operation. While EMERGENCY-STOP control devices, for example, interrupt the sensor circuit when activated, safety shutdown mats establish a cross-circuit between the two input channels of the evaluation system when stepped on. This means that1. in the case of a sensor which interrupts the sensor circuit, a cross-circuit

leads to a fault.2. in the case of safety shutdown mats an interruption of the sensor circuit

leads to a fault.

All safety shutdown mats and switching strips operating in a 4-wire configura-tion that work in accordance with the principle of cross-circuit tripping can be connected to the 3TK2845 safety relay.The tripping of the 3TK2845 is initiated by a cross-circuit in the sensor cables.If the safety shutdown mat resistance is < 1000 Ω for the mat + the connecting leads, safe evaluation is performed in accordance with DIN EN 1760-1 and DIN EN 1760-2.

The 3TK2845 automatically detects the mode of operation of the connected sensor.

If, during first activation of the sensor after a device restart, 1. opening of the sensor circuits is detected, the 3TK2845 only accepts

sensors which open the sensor circuits (floating NC contacts such as EMERGENCY-STOP control devices or position switches). A cross-circuit between the sensor circuits leads to a fault.

2. a cross-circuit is detected between the sensor circuits, the 3TK2845 only accepts sensors causing a sensor circuit short-circuit (safety shutdown mats). Opening of the sensor circuits leads to a fault.



2.1.2 Symbol description

Explanation of symbols

Symbol Meaning

START button

EMERGENCY-STOP

Protective door

Enabling button

Light curtain, light array, light barrier

Safety shutdown mat

Cross-circuit monitoring

Feedback circuit

Key-operated switch

Table 2-1: Explanation of symbols



2.2 Versions

2.2.1 3TK2845-.HB.. "Monitored and automatic start"

The 3TK2845-.HB.. has two sensor inputs (Y11/12; Y21/22) with monitored start, (Y41/42; Y51/52 with automatic start), one cascading input (1, with automatic start) as well as one switching input (key-operated switch). On the output side there are two relay and two enabling circuits and two solid-state enabling cir-cuits as well as one solid-state signaling output.

Standard operationIn standard operation (key-operated switch "OFF") all enabling circuits are acti-vated. All input blocks are AND-connected to one another and affect all enabling circuits at the same time. Some are time-delayed (in the versions: 3TK2845-.HB41; -.HB42; -.HB44).

MaintenanceDuring maintenance (key-operated switch "ON") only two of the four enabling circuits are activated. In this case, sensor input Y42/Y52 (e.g. protective door) has no function. The hazardous area can be entered since the dangerous motion has been switched off via the two inactive enabling circuits. The sensor input Y12/Y22 and the cascading input (1, with automatic start) still affect the active enabling circuits.

Monitored start is required:o At initial start after applying the control supply voltage.o After opening and closing sensor circuits Y12/Y22 (even if this is followed by

deactivation and reactivation of cascading!)

Automatic start takes place:o After closing sensor circuits Y42/Y52 (following "standard operation")o After activation of the cascading input (not on first switching on the device

AND after opening and closing of the sensor on Y12/Y22).o After exiting maintenance mode (not if the sensor on Y12/Y22 has been

actuated!)



Outputs:o Standard operation (Y72/Y82 at 0 V):

All enabling circuits (13/14, 24, 33/34, 44 or 13/14, 24, 37/38, 48 with the time-delayed versions 3TK2845-.HB41; -.HB42; -.HB44), some time-delayed, switch on with the Start command or on closing of sensor circuit Y42/Y52 (automatic start, if Y12/Y22 was not opened).All enabling circuits are deactivated by actuating a sensorSignaling circuit 52 always switches inversely to the enabling circuits

o Maintenance (Y72/Y82 at 24 V DC):If sensor circuit Y12/Y22 or the cascading input (1, with automatic start) is opened during maintenance, all enabling circuits switch off, and signaling circuit 52 is active.

Starting maintenance mode from the idle condition:Enabling circuits 13/14 and 24 (13/14 and 48 with the time-delayed versions) switch on with the Start command (if all other switch-on conditions are met at the same time).Enabling circuits 13/14 and 24 switch on when the key-operated switch is actuated (24 V DC at Y72/Y82) regardless of the status at input Y42/Y52 (if the sensor at Y42/Y52 was the only cause of switching off).Signaling circuit 52 pulses with a frequency of 1.2 Hz.

Starting maintenance from standard operation (all enabling circuits active).Enabling circuits 33/34 and 44 switch off when maintenance mode is selected, but enabling circuits 13/14 and 24 remain active.Signaling circuit 52 pulses with a frequency of 1.2 Hz.



Status diagrams

Fig. 2-1: Status diagram: 3TK2845-.HB40

Fig. 2-2: Status diagram: 3TK2845-.HB41

Eingänge

Norm albetrieb Servicebetrieb Norm albetrieb

Y34

1

Y12/22

Y42/52

Y72/82

13/14

24

33/34

48

52

Ausgänge

-Um schaltung Norm al- / ServicebetriebChangeover from standard operation to maintenance

MaintenanceStandard operationIn

puts

Outp

uts

Standard operationEingänge

Norm albetrieb Servicebetrieb

Y34

1

Y12/22

Y42/52

Y72/82

13/14

24

37/38

48

52

Ausgänge

t v

Um schaltung Norm al- / Servicebetrieb

tvv v tv tv tv tv

Changeover from standard operation to maintenance

MaintenanceStandard operation

Inpu

tsOu

tput

s



Connections: Monitored and automatic start instantaneous

Inputs (sensors) Outputs (enabling circuit)

Sensor Terminals Description Description Terminals

1 Cascading Safe relay outputinstantaneous

1314

or

or

or

Y11Y12

Y21Y22

Sensor connection Safe solid-state outputinstantaneous

240

Y34 START button

Safe relay outputinstantaneous

3334Y35

refers to Y11/Y12, Y21/Y22

- with cross-circuit detec-tion (not connected)- without cross-circuit detection (with 24V DC = terminal A1 connected)

or

or

Y41Y42

Y51Y52

Sensor connectionSafe solid-state outputinstantaneous 44

Y65refers to Y41/Y42, Y51/Y52


Solid-state signaling output1)

(must not be used for safety-related applica-tions)

52Y72Y82

Key-operated switch

Y64External device monitor-ing circuit

1) Solid-state signaling output

Enabling circuits active: Signaling output OFF

Enabling circuits inactive: Signaling output ON

Key-operated switch operation: Signaling output clocked (approx. 1.2 Hz)



Connections: Monitored and automatic start, time-delayed




1314

or

or

or

Y11Y12

Y21Y22


24

Y34 START button

Safe relay outputtime-delayed

3738Y35



or

or

Y41Y42

Y51Y52

Sensor connectionSafe solid-state outputtime-delayed 48





52Y72Y82

Key-operated switch








2.2.2 3TK2845-.DB.. "Monitored start"

The 3TK2845-.DB.. has two sensor inputs (Y42/Y52, Y12/Y22 with monitored start), one cascading input (1, with automatic start) as well as one switching input (key-operated switch). On the output side there are two relay and two enabling circuits and two solid-state enabling circuits as well as one solid-state signaling output.

Standard operationIn standard operation (key-operated switch "OFF") all enabling circuits are acti-vated. All input blocks are AND-connected to one another and affect all enabling circuits at the same time. Some are time-delayed (in the versions: 3TK2845-.DB41; -.DB42; -.DB44).

MaintenanceDuring maintenance (key-operated switch "ON") only two of the four enabling circuits are activated. In this case, sensor input Y42/Y52 (e.g. protective door) has no function. The hazardous area can be entered since the dangerous motion has been switched off via the two inactive enabling circuits. The sensor input Y12/Y22 and the cascading input (1, with automatic start) still affect the active enabling circuits.

A monitored start is required:o At initial start of the device.o After opening one or both sensor circuits (Y12/Y22 or Y42/Y52).o After exiting maintenance mode, if the protective door has been opened.

Automatic start takes place if:o Cascading input 1 (if no Y12/Y22 or Y42/Y52 sensor has been actuated previ-

ously).o Service switch Y72/Y82 (if the protective door has not been opened during

maintenance).

Outputs:o Standard operation (Y72/Y82 at 0 V):

All enabling circuits (13/14, 24, 33/34, 44; or 13/14, 24, 37/38, 48 with the time-delayed versions 3TK2845-.DB41; -.DB42; -.DB44), some time-delayed, switch on with the Start command.All enabling circuits are deactivated by actuating a sensor.Signaling circuit 52 always switches inversely to the enabling circuits.

o Maintenance (Y72/Y82 at 24 V DC):If sensor circuit Y12/Y22 or the cascading input (1, with automatic start) is opened during maintenance, all enabling circuits switch off, and signaling circuit 52 is active.

Starting maintenance mode from the idle condition:Enabling circuits 13/14 and 24 (13/ and 48 with the time-delayed versions) switch on with the Start command regardless of the status at sensor input Y42/Y52 (if all other switch-on conditions are met at the same time).Signaling circuit 52 pulses with a frequency of 1.2 Hz.

Starting maintenance from standard operation (all enabling circuits active)Enabling circuits 33/44 and 44 switch off when maintenance mode Y72/Y82 is selected, but enabling circuits 13/14 and 24 remain active.Signaling circuit 52 pulses with a frequency of 1.2 Hz.



Status diagrams

Fig. 2-3: Status diagram: 3TK2845-.DB40

Fig. 2-4: Status diagram: 3TK2845-.DB41

Eingänge


Y 34

1

Y 12/22

Y 42/52

Y 72/82

13/14

24

33/34

44

52

Ausgänge

-Um schaltung Norm al- / ServicebetriebChangeover from standard operation to maintenance


Inpu

tsOu

tput

sStandard operation

Eingänge

Y34

1

Y12/22

Y42/52

Y72/82

13/14

24

37/38

48

52

Ausgänge

tv tv tv

Inpu

tsOu

tput

s



Connections: Monitored start instantaneous




1314

or

or

or

Y11Y12

Y21Y22


24

Y34 START button


3334Y35



or

or

Y41Y42

Y51Y52

Sensor connectionSafe solid-state outputinstantaneous 44





52Y72Y82

Key-operated switch

Y64External device monitoring circuit







Connections: Monitored start time-delayed




1314

or

or

or

Y11Y12

Y21Y22


24

Y34 START button

Safe relay outputtime-delayed

3738



or

or

Y41Y42

Y51Y52

Sensor connectionSafe solid-state outputtime-delayed 48





52Y72Y82

Key-operated switch

Y64External device monitoring circuit







2.2.3 3TK2845-.EB.. "Enabling button"

The 3TK2845-.EB.. has two sensor inputs (Y12/Y22 enabling button with automatic start, Y42/Y52 protective door with monitored start/automatic start), one cascading input (1, with automatic start) as well as one switching input (key-operated switch). On the output side there are two relay and two enabling circuits and two solid-state enabling circuits as well as one solid-state signaling output.

Standard operationIn standard operation (key-operated switch "OFF") all enabling circuits are activated. The cascading input (1, with automatic start) and the protective door input Y42/Y52 are AND-connected with each other and affect all enabling cir-cuits at the same time. Some are time-delayed. Input Y12/Y22 for the enabling button has no function in this context. The opening of the protective door or a missing signal at the cascading input CAS/OS deactivates all enabling circuits.

MaintenanceDuring maintenance (key-operated switch "ON") only two of the four enabling circuits are activated. In this case, sensor input Y42/Y52 (e.g. protective door) has no function. The hazardous area can be entered since the dangerous motion has been switched off via the two inactive enabling circuits. The dangerous motion can be started again via the enabling button at sensor input Y12/Y22 despite the protective door being open.

Parameterization for monitored/automatic start for sensor circuit Y42/Y52:o If Y32 is at 24 V DC, the device powers up in automatic start.o If there is no voltage at Y32, the device powers up in monitored start.- If the protective door is not opened during maintenance, all enabling circuits

close automatically on exiting maintenance mode. This applies to both monitored start and automatic start.

If "monitored start" is parameterized:- A monitored start is required:o At initial start after applying the control supply voltage.o After opening and closing sensor circuits Y42/Y52 (even if this is followed by

deactivation and reactivation of cascading!)

- Automatic start takes place:o After activation of the cascading input (not on first switching of the device

AND after opening and closing of the sensor on Y12/Y22 if maintenance mode is not selected).

o After exiting maintenance mode (if Y42/Y52 has not been actuated).

If "automatic start" is parameterized:o After the switch-on conditions have been met, all enabling circuits switch in

(not in maintenance mode!)



Outputs:- Standard operation (Y72/Y82 at 0 V):o All enabling circuits (13/14, 24, 33/34, 44; or. 13/14, 24, 37/38, 48 with the

time-delayed versions 3TK2845-.EB41; -.EB42; -.EB44) switch on with the Start commandAll enabling circuits are deactivated by actuating the sensor circuit Y42/Y52.

o Signaling circuit 52 always switches inversely to the enabling circuits.

- Maintenance (Y72/Y82 at 24 V DC):General:

If cascading input 1 is opened during maintenance, all enabling circuits switch off, and signaling circuit 52 is active.

o When exiting maintenance mode, all enabling circuits switch on only after a renewed Start command (if Y42/Y52 has been actuated).

Starting maintenance mode from the idle condition:o Enabling circuits 13/14 and 24 switch on with the Start command regardless

of the status at sensor input Y12/Y22 (if all other switch-on conditions are met at the same time).

o Outputs 33/34 and 44 (37/38 and 24 with the time-delayed versions) can be activated in maintenance mode with the enabling button (even if door Y12/Y22 is opened).

o Signaling circuit 52 pulses with a frequency of 1.2 Hz.

Starting maintenance from standard operation (all enabling circuits active).o Enabling circuits 33/44 and 44 (24, 37/38 with the time-delayed versions)

switch off when maintenance mode Y72/Y82 is selected, but enabling circuits 13/14 and 24 remain active.

o Outputs 33/34 and 44 (37/38 and 24 with the time-delayed versions) can be activated in maintenance mode with the enabling button (even if door Y12/Y22 is opened).

o Signaling circuit 52 pulses with a frequency of 1.2 Hz.



Status diagrams

Fig. 2-5: Status diagram: 3TK2845-.EB40

Fig. 2-6: Status diagram: 3TK2845-.EB40

Eingänge


Y34

1

Y12/22

Y42/52

Um schaltung Norm al- / Servicebetrieb

Y72/82

13/14

24

33/34

44

52

Ausgänge

Changeover from standard operation to maintenance


Inpu

tsOu

tput

sStandard operation

Eingänge


Y34

1

Y12/22

Y42/52

Y72/82

13/14

24

37/38

48

52

Ausgänge

tv tv tv tv tv tv

- /ServicebetriebUm schaltung Norm al- / Servicebetrieb-Changeover from standard operation to maintenance


Inpu

tsOu

tput

s

Standard operation



Connections: Enabling button instantaneous




1314Y11

Y12

Y21Y22

Sensor connectionSafe solid-state outputinstantaneous

24

or

or

Y41Y42

Y41Y42

Sensor connection


3334

Y34 START button

Safe solid-state outputinstantaneous

44Y32

- Monitored start(not connected)- Automatic start(with 24 V DC = terminal A1 connected)


- with cross-circuit detec-tion (not connected)- without cross-circuit detection (with 24V DC = terminal A1 connected) Solid-state signaling

output1)


52Y72Y82

Key-operated switch








Connections: Enabling button time-delayed




1314Y11

Y12

Y21Y22

Sensor connectionSafe solid-state outputinstantaneous

24

or

or

Y41Y42

Y51Y52

Sensor connection


3738

Y34 START button


48Y32

- Monitored start(not connected)- Automatic start(with 24 V DC = terminal A1 connected)



output1)


52Y72Y82

Key-operated switch








2.2.4 3TK2845-.FB.. "Spring force interlocked tumbler"

The 3TK2845-.FB.. has two sensor inputs (Y12/Y22 EMERGENCY-STOP with monitored start, Y42/Y52 protective door with tumbler and monitored start), one cascading input (1, with automatic start) as well as one door enable input. On the output side there are one relay enabling circuit and two solid-state enabling circuits as well as a solenoid control output and a solid-state signaling output.

Not enabledIf the protective door is not enabled, it cannot be opened. Cessation of the signal at the inputs Y12/Y22 or at the cascading input (1, with automatic start) deactivates the enabling circuits.

EnabledThe solenoid control output and the second solid-state enabling circuit are acti-vated via a signal to the door enable input after the delay time has passed. This enables the protective door.

A monitored start is required:o At initial start of the device.o After opening one or both sensor circuits (Y12/Y22 or Y42/Y52).o After cessation of the door enable (Y82), if the protective door has been

opened.

Automatic start takes place only:o In the case of a cascading input (if no sensor has been actuated previously).o After cessation of the door enable, if the protective door has not been

opened.

Outputs:o Standard operation (Y82 at 24 V):

Enabling circuits 13/14 and 24 switch on with the Start command.Enabling circuits 13/14 and 24 are deactivated by actuating a sensor.Signaling circuit 52 always switches inversely to the enabling circuits.

o Door enabling mode (Y82 at 0 V DC):In the mode for door enabling, outputs 13/14 and 24 are always inactive.

Starting the mode for door enabling from the idle condition:Enabling circuits 37/38 and 48 are inactive, and the spring force interlocked tumbler remains enabled (protective door can be opened).Signaling circuit 52 pulses with a frequency of 1.2 Hz.

Starting the mode for door enabling from standard operation (all enabling cir-cuits active)Enabling circuits 13/14 and 24 switch off when maintenance Y82 is selected, and enabling circuits 37/38 and 48 switch off after the set time and enable the door tumbler.Signaling circuit 52 pulses with a frequency of 1.2 Hz.



Status diagram

Fig. 2-7: Status diagram: 3TK2845-.FB4.

Eingänge

Norm albetrieb Türfreigabe Norm al

Y34

1

Y12/22

Y42/52

Y72

13/14

24

37/38

48

52

Ausgänge

Start

Kaskadier

NO T HALT Überwacht

Schutztür Überwacht

M agnetüberwachung

Y82 Türfreigabe

O UT1

O UT2

O UT3 Türverriegelung


M eldeausgangtv

OUT1

OUT2

OUT3 door interlock

Signaling output

OUT4 door interlock

Cascading

EMERGENCY Stop monitored

Protective door monitored

Door enabling

Magnet monitoring

Start

Standard operation

Inpu

tsOu

tput

s

Door Standardenabling



Connections: Spring force interlocked tumbler




1314Y11

Y12

Y21Y22

Sensor connection


24Y34 START button

Y35


Safe relay outputswitch-on delaye.g. for door interlock

3738

or

or

Y41Y42

Y51Y52

Sensor connectionSafe solid-state outputswitch-on delaye.g. door interlock

48



output1)


52Y72 Magnet monitoring

Y82 Door enable








2.2.5 3TK2845-.GB.. "Magnetic force interlocked tumbler"

The 3TK2845-.GB.. has two sensor inputs (Y12/Y22 EMERGENCY-STOP with monitored start, Y42/Y52 protective door with tumbler and monitored start), one cascading input (1, with automatic start) as well as one door enable input. On the output side there are one relay enabling circuit and two solid-state enabling circuits as well as a relay solenoid control output and a solid-state signaling output.

Not enabledIf the protective door is not enabled, it cannot be opened. Cessation of the signal at the inputs Y12/Y22 or at the cascading input (1, with automatic start) deactivates the enabling circuits (13, 14; 24).

EnabledThe solenoid control output and the second solid-state enabling circuit are deactivated via a signal to the door enable input after the delay time has passed. This enables the protective door.

A monitored start is required:o At initial start of the device.o After opening one or both sensor circuits (Y12/Y22 or Y42/Y52).o After closing the door enable, if the protective door has been opened.

Automatic start only:o In the case of a cascading input (if no sensor has been actuated previously).o After closing the door enable, if the protective door has not been opened.

Outputs: o Standard operation (Y82 at 24 V DC):

Enabling circuits 13/14 and 24 switch on with the Start command.Enabling circuits 13/14 and 24 are deactivated by actuating a sensor.Signaling circuit 52 always switches inversely to the enabling circuits.

o Door enabling mode (Y82 at 0 V DC)In the mode for door enabling, outputs 13/14 and 24 are always inactive.

Starting the mode for door enabling from the idle condition:Enabling circuits 37/38 and 48 are inactive, and the magnetic force interlocked tumbler remains enabled (protective door can be opened).Signaling circuit 52 pulses with a frequency of 1.2 Hz.

Starting the mode for door enabling from standard operation (all enabling cir-cuits active):Enabling circuits 13/14 and 24 switch off when door enabling is selected (Y82 at 0 V DC), and the magnetic force interlocked tumbler becomes inactive after the set time (protective door can be opened).Signaling circuit 52 pulses with a frequency of 1.2 Hz.



Status diagram

Fig. 2-8: Status diagram: 3TK2845-.GB4.

Eingänge

Norm albetrieb Türfreigabe Norm al

Y34

1

Y12/22

Y42/52

Y72

13/14

24

37/38

48

52

Ausgänge

Start

Kaskadier

NO T HALT Überwacht

Schutztür Überwacht

M agnetüberwachung

Y82 Türfreigabe

O UT1

O UT2



M eldeausgangtv

OUT1

OUT2

OUT3 door interlock

Signaling output

OUT4 door interlock

Cascading

Protective door monitored

Door enabling

Magnet monitoring

Start

Door StandardenablingStandard operation

Inpu

tsOu

tput

s

EMERGENCY Stop monitored



Connections: magnetic force interlocked tumbler




1314Y11

Y12

Y21Y22

Sensor connection


24

Y34 START button

Y35refers to Y11/142, Y21/Y22


Safe relay outputoff-delaye.g. door interlock

3738

or

or

Y41Y42

Y51Y52

Sensor connectionSafe solid-state outputoff-delaye.g. door interlock

48



output1)


52Y72 Magnet monitoring

Y82 Door enable







Technical data 3


3.1 Technical data 3-2

3.2 Terminals 3-4

3.3 Terminal assignment 3-5

3.4 Dimensional drawings 3-6


Technical data

3.1 Technical data

Type 3TK2845-.....

Standards EN 60204-1, EN ISO13489-1, IEC 62061

EMC EN 60947-5-1

Category in accordance with DIN EN13841-1 PLe /CAT 4

Safety Integrity Level Claim Limit (SIL CL) 3

Test verification documents TÜV

Overvoltage category II

Rated insulation voltage Ui 300 V

Rated impulse withstand voltage Uimp 2,5 kV

Rated control supply voltage Vs 24 V DC

Operating range 0,85 to 1,15 Us

Rated power 5 W

Short-circuit protection Semiconductor outputs: Short-circuit-proofUse 4 A gL/gG or quick-response fuse-links for the floating safe outputs, e.g. LV HRC type 3NA, DIAZED type 5SB, NEOZED type 5SE

Switching frequency z during rated operation 2000 1/h

Response time Max. 60 ms

Release time, (stop category 0) in the case of EMERGENCY-STOP

45 ms

Release time, (Stop category 1) at the safe outputs during EMERGENCY-STOP

Max. 300 seconds (adjustable)

Supply power buffering 25 ms

Recovery time during EMERGENCY-STOP/power failure

At least 200 ms/at least 8 seconds

Minimum EMERGENCY-STOP command time 30 ms

START button command time 0.2 to 5 seconds

Permissible ambient temperature Ta during operation and storage

–25 to +60 °C/–40 to +80 °C

Total resistance of sensor circuit RSG Max. 250ΩTotal capacity of sensor circuit CSG max. 500 nF

Degree of protection according to EN 60529, enclosure/terminals

IP20

Touch protection, DIN VDE 0106, Part 100 Finger-safe

Weight 0.4 kg

Permissible mounting position Any

Shock resistance Sine wave 8/10 and 15/5 g/ms

PFHD 6.86 x 10 -9

PFD 6.1 x 10 -4

Table 3-1: Technical data


Technical data

Data sheetYou can find all the technical data of the product in the Siemens Industry Online Support.

1. Enter the full article number of the desired device in the "Product" field, and confirm with the Enter key.

2. Click the "Technical data link.

HFT 1

Lifetime 20 years

SFF [%] > 90 %

T1 20 years

Type 3TK2845-.....

Table 3-1: Technical data (Contd.)


https://support.industry.siemens.com/cs/ww/en/ps/tdhttps://support.industry.siemens.com/cs/ww/en/ps/td

Technical data

Rated operating currents Ie in accordance with IEC 60 947-5-1

NoticeA gL/gG 4 A or quick-response fuse (DIN EN60947-5-1) must be connected upstream of the device as short-circuit protection (For information, refer to chapter 3.2).

3.2 Terminals

The 3TK2845 multifunction device has a total of 24 terminals available either as screw terminals or spring-loaded terminals, which are suitable for the following connection cross sections:

The rated supply voltage Us (24 V DC) is applied at terminals A1(L+) and A2(M).

The terminals have degree of protection IP20 according to EN 60 529.

Protection against direct contact is given as shock-hazard protection according to DIN EN 50274 (VDE 0660, Part 514).

Terminal(s)Utiliza-tion cate-gory

Rated operational voltage Ue

Rated opera-tional current Ie

13, 14; 33, 34; 37, 38 DC-13 24 V 1.0 A

13, 14; 33, 34; 37, 38 AC-15 230 V 3.0 A

24; 44; 48 DC-13 24 V 1,0 A

52 DC-13 24 V 0.5 A

Table 3-2: Rated operational currents Ie

3TK2845-1... 3TK2845-2...

∅ 5 ... 6 mm / PZ20,8 ... 1.2 Nm7 ... 10.3 lb-in —

1 x 0.5 ... 4.0 mm²2 x 0.5 ... 2.5 mm² 2 x 0.25 ... 1.5 mm²

2 x 0.5 ... 1.5 mm²1 x 0.5 ... 2.5 mm² 2 x 0,25 ... 1.5 mm²

— 2 x 0,25 ... 1.5 mm²

AWG 2 x 20 to 14 2 x 24 to 16

10

10

10


Technical data

3.3 Terminal assignment

Fig. 3-1: Terminal assignment

A1

48

13 2414

37 38 48

*E01*

1

38

24

14

37

13

SIRIUSDEVICE

1 Y12Y11

A1+ DC24V Y41 Y42

Y42/52

A2-Y82Y72

Y64Y34 52

3TK2845-1....

Y72/82

21,51

Y12/220,05

0,5

3s

2,5

3TK28

Y22Y21Y35

Y51Y65 Y52

A1

48

13 2414

37 38 48

*E01*

1

38

24

14

37

13

SIRIUSDEVICE

1 Y12Y11

A1+ DC24V Y41 Y42

Y42/52

A2-Y82Y72

Y64Y34 52

3TK2845-1....

Y72/82

21,51

Y12/220,05

0,5

3s

2,5

3TK28

Y22Y21Y35

Y51Y65 Y52

Y343433 44 Y64 52

SIRIUS

Y72

3TK2845-1....

1413 24

*E01*

44

1

34 33

DEVICE

24

14 13

A1

Y82 A2-

Y42/52

Y72/82

Y12/22

Y35

Y65Y42A1+ Y41DC

Y11

24V

1 Y12

Y51 Y52

3TK28

Y21 Y22

3TK2845-1DB40 3TK2845-1EB403TK2845-1HB40

3TK2845-1DB41/42/44 3TK2845-1EB41/42/443TK2845-1HB41/42/44

3TK2845-1FB403TK2845-1GB40

3TK2845-1FB41/42/443TK2845-1GB41/42/44

Y343433 44 Y64 52

SIRIUS

Y72

3TK2845-1EB40

1413 24

*E01*

44

1

34 33

DEVICE

24

14 13

A1

Y82 A2-

Y42/52

Y72/82

Y12/22

Y32

Y65Y42A1+ Y41DC

Y11

24V

1 Y12

Y51 Y52

3TK28

Y21 Y22


Technical data

3.4 Dimensional drawings

Fig. 3-2: Dimensional drawing

115a

b

102

5

28,8

c d

6

45

7,2

68,2

91,5

118,

5 x

3713

8,5

x 37

2,97,2

75,1

98,4

3TK2845-1... 3TK2845-2...

a 94 -

b 65 -

c 82,6 84,8

d 105,9 107,7


Mounting, wiring, commissioning 4


4.1 Mounting and coding 4-3

4.2 Wiring 4-4

4.3 Meaning of the LED indicators 4-6



WarningHazardous voltage! Can lead to electric shock and burns. Turn off and lock out all power supplying this device before working on this device.

NoticeTaking the ambient conditions into account, you must install the devices in con-trol cabinets with the IP32, IP43 or IP54 degree of protection.

NoticeThe actuators/sensors must be actuated at least once a year. (Fault detection according to IEC 62061)



4.1 Mounting and coding

The 3TK2845 multifunction device is designed for snap-on mounting on a 35mm standard mounting rail complying with DIN EN 60 715. The devices can also be screw mounted with two push-in lugs, order number 3RP1903.

Fig. 4-1: 3TK2845 multifunction device for snap-on or screw mounting

Removable terminals simplify exchanging the device according to need. The ter-minals are coded to prevent confusion.

WarningBefore replacing the terminals, you must disconnect the system and device from the power supply.

The terminal blocks can be disconnected in the order a, b and can be connected in the order c, d.

Fig. 4-2: Mounting and coding of the removable terminals

35 mm standardmounting rail

3RP1903

a

b

d

c

A

C

D

B

A, B, C, D:Coding



4.2 Wiring

The 3TK2845 multifunction device is available either with screw terminals or spring-loaded terminals.Please refer to the following table for details of the required connection cross-sections and maximum permissible torques.

Fig. 4-3: Overview of the connection cross sections/maximum permissible torques

WarningUse a power supply unit with protective extra-low voltage (SELV, PELV). This means that these modules must only be subjected to a voltage of Um in the event of a fault. The following applies to this switching device: Um < 60.0 V.You can find more detailed information about protective extra-low voltage in the data sheets of the power supplies to be used.

CautionFor the non-floating outputs (24, 44, 48, 52) it must be ensured that the actuators or loads to be switched have the same ground potential as the 3TK2845.

NoticeExternal loads must be equipped with a protective circuit which is suitable for the respective load (e.g. RC elements, varistors, suppressors) to reduce electromagnetic interference and to enhance the service life of the OSSD.

1

2

5 3

4

4

53

7

8

7

DIN ISO 2380 -1A 0,5 x 3 3RP1903

~10°

~10°

3TK2845-1... 3TK2845-2...

∅ 5 ... 6 mm / PZ20.8 ... 1.2 Nm7 ... 10.3 lb-in —

1 x 0.5 ... 4.0 mm²2 x 0.5 ... 2.5 mm² 2 x 0.25 ... 1.5 mm²

2 x 0.5 ... 1.5 mm²1 x 0.5 ... 2.5 mm² 2 x 0.25 ... 1.5 mm²

— 2 x 0.25 ... 1.5 mm²

AWG 2 x 20 to 14 2 x 24 to 16

10

10

10



The 3TK2845 multifunction device is ready for operation after the power supply is connected at terminals A1 and A2. The device runs a self-test during which the proper functionality of the internal electronics is checked. The internal circuit elements are cyclically monitored for faults during operation.

If any sensor responds, the multifunction device will be safely switched off.

Devices equipped with a time delay (3TK2845-B41/B42/B44) have a sealable cover cap to protect the set delay time against unauthorized changes.

It can be ordered as an accessory with the order number 3RP1902.

Fig. 4-4: Sealable cover cap

4

5

41

2

3

3RP1902



4.3 Meaning of the LED indicators

Nine LEDs indicate the operating status and the function of the device.Display during self-test: 2 s lamp test: all LEDs light up, i.e. the two-color "DEVICE" LED lights up yellow and then the device LED flashes green for approximately 4 seconds.

LED Meaning

Device OFF No supply voltage / supply voltage too low or internal fuse tripped.

Green Supply voltage in the permissible operating range

Green flashing Self-test after restart

Red Device defective → replace device

Red flashing Sensor fault (cross-circuit, configuration changed during operation) → remedy fault and restart device

14 -- 13 OFF Output passive

Green Output active

24 OFF Output passive

Green Output active

Green flashing Feedback circuit open

34 -- 33(38 -- 37)

OFF Output passive

Green Output active

44 (48) OFF Output passive

Green Output active

Green flashing Feedback circuit open

Y 12/22 OFF Input passive (switch-on condition not fulfilled)

Green Input active (If device flashes red: the configuration has been changed during operation)

Green flashing Cross-circuit at the input (if device flashes red), Sensor simultaneity not fulfilled

Y 42/52 OFF Input passive (switch-on condition not fulfilled)

Green Input active (If device flashes red: the configuration has been changed during operation)

Green flashing Cross-circuit at the input (if device flashes red), Sensor simultaneity not fulfilled

Y 72/82 OFF Input passive

Green Input active

Table 4-1: Meaning of the LED indicators


Applications 5The following chapter lists common applications. The 3TK2845 multifunction device can be used for all of these applications. The advantage of using this device is the fact that several safety-related functions, e.g. protective door mon-itoring, monitoring functions using contactless protective equipment (ESPE), such as light curtains, safety shutdown mats and EMERGENCY-STOP control devices, can be implemented using only one 3TK2845 multifunction device rather than using several safety relays. In addition, the device is also suited for operational switching, cascading and adding safety relays (either using contacts or switching electronically).

This chapter contains only a few examples of possible applications. Depending on the application, the wiring can differ from the examples shown here.


5.1 3TK2845-.HB40 "Monitored start and automatic start", instantaneous outputs

5-2

5.2 3TK2845-.HB41 "Monitored start and automatic start", time-delayed outputs

5-4

5.3 3TK2845-.DB40 "Monitored startup", instantaneous outputs 5-6

5.4 3TK2845-.DB41 "Monitored start", time-delayed outputs 5-8

5.5 3TK2845-.EB40 "Enabling button" 5-10

5.6 3TK2845-.FB41/2/4 "Spring force interlocked tumbler" 5-12

5.7 3TK2845-.GB41/2/4 "Magnetic force interlocked tumbler" 5-14


Applications

5.1 3TK2845-.HB40 "Monitored start and automatic start", instantaneous outputs

Brief description:Monitoring an EMERGENCY-STOP control device with monitored start and a protec-tive door with automatic start and maintenance.

Properties:Stop category 0 according to EN 60204-1;Two solid-state enabling circuits;Two floating enabling circuits;One solid-state signaling output;Us 24 V DC

Function:See Status diagram: 3TK2845-.HB40 on page 2-9

Note:Connecting several position switches in series for protective door monitoring is not permissible for PLe according to DIN EN ISO 13849-1 (fault detection).

NoticeThe only sensors that can be used are safety sensors with positive-opening con-tacts.


Applications

Fig. 5-1: Monitored start and automatic start, instantaneous outputs; max. achievable PL = e; SIL CL= 3

Fig. 5-2: Monitored start and automatic start, instantaneous outputs; max. achievable PL = c; SIL CL = 1

M

L+(24V DC)

Q1-Q4

Y52

A2

Y22Y21Y12Y11

44 Y64 5234

A1 Y51Y65Y42Y41

Y7224 Y821413

1

33

Y35

Y34

Q3 Q4Q1 Q2M1

Q1Q2

M2

Q3Q4

3TK2

845-

.HB4

0

STA

RT

STA

RT

M2M1

52 Y64 Y34 44 34 33 A2 Y82 Y72 241413

Y22 Y21 Y35 Y12 Y11 1 Y52 Y51 Y65 Y42Y41A1

Q2 Q1

MQ1 Q2

L+(24 V DC)

Q2 Q1


Applications

5.2 3TK2845-.HB41 "Monitored start and automatic start", time-delayed outputs


Properties:Stop category 0/1 according to EN 60204-1;Two solid-state enabling circuits;Two floating enabling circuits;One solid-state signaling output;Us 24 V DC

Function:See Status diagram: 3TK2845-.HB41 on page 2-9




Applications

Fig. 5-3: Monitored start and automatic start, time-delayed outputs; max. achievable PL = e; SIL CL = 3

Fig. 5-4: Monitored start and automatic start, time-delayed outputs; max. achievable PL = c; SIL CL = 1

M

L+(24V DC)

Q1-Q4

Y52

A2

Y22Y21Y12Y11

48 Y64 5238

A1 Y51Y65Y42Y41

Y7224 Y821413

1

37

Y35

Y34

STAR

T

3TK

2845

-.HB

41

M1

Q1Q2

M2

Q3Q4

Q3 Q4Q1 Q2 Q4Q3Q2Q1

STA

RT

M2M1

52 Y64 Y34 48 38 37 A2 Y82 Y72 241413

Y22 Y21 Y35 Y12 Y11 1 Y52 Y51 Y65 Y42Y41A1

Q2 Q1

Q1 M

Q2

L+(24 V DC)

Q2 Q1


Applications

5.3 3TK2845-.DB40 "Monitored startup", instantaneous outputs

Brief description:Monitoring an EMERGENCY-STOP control device and a protective door with moni-tored start and maintenance.


Function:See Status diagram: 3TK2845-.DB40 on page 2-13




Applications

Fig. 5-5: Monitored start, instantaneous outputs; max. achievable PL = e; SIL CL = 3

Fig. 5-6: Monitored start, instantaneous outputs; max. achievable PL = c; SIL CL = 1

M

L+(24V DC)

Q1-Q4

Y52

A2

Y22Y21Y12Y11

44 Y64 5234

A1 Y51Y65Y42Y41

Y7224 Y821413

1

33

Y35

Y34

Q3 Q4Q1 Q2M1

Q1Q2

M2

Q3Q4

3TK2

845-

.DB4

0

STAR

TS

TAR

T

52 Y64 Y34 44 34 33 A2 Y82 Y72 241413

Y22 Y21 Y35 Y12 Y11 1 Y52 Y51 Y65 Y42Y41A1

Q2 Q1

Q1 M

Q2

L+(24 V DC)

M2M1

Q2 Q1


Applications

5.4 3TK2845-.DB41 "Monitored start", time-delayed out-puts



Function:See Status diagram: 3TK2845-.DB41 on page 2-13




Applications

Fig. 5-7: Monitored start, time-delayed outputs; max. achievable PL = e; SIL CL = 3

Fig. 5-8: Monitored start, time-delayed outputs; max. achievable PL = c; SIL CL = 1

M

L+(24V DC)

Q1-Q4

Y52

A2

Y22Y21Y12Y11

48 Y64 5238

A1 Y51Y65Y42Y41

Y7224 Y821413

1

37

Y35

Y34

3TK

2845

-.DB

41

M1

Q1Q2

M2

Q3Q4

Q3 Q4Q1 Q2

STAR

T

Q4Q3Q2Q1

STA

RT

52 Y64 Y34 48 38 37 A2 Y82 Y72 241413

Y22 Y21 Y35 Y12 Y11 1 Y52 Y51 Y65 Y42Y41A1

Q2 Q1

Q1 M

Q2

L+(24 V DC)

M2M1

Q2 Q1


Applications

5.5 3TK2845-.EB40 "Enabling button"

Brief description:Monitoring an EMERGENCY-STOP control device and a protective door with moni-tored start and maintenance with enabling button.


Function: See Status diagram: 3TK2845-.EB40 on page 2-18

Note:Terminal Y32 can be used to choose between autostart (24 V) and monitored start (0 V) for the protective door input (Y41/Y42 and Y51/Y52).



NoticeWhen faults are ruled out (protected laying of the control lead to cascading input 1), the application's safety category corresponds to that of the higher-level safety relay.


Applications

Fig. 5-9: Enabling button; max. achievable PL = e; SIL CL = 3

M

L+(24V DC)

Y52

A2

12Y 22YY12Y11

44 Y64 5234

A1 Y51Y6514Y 24Y

Y7224 Y8231 41

1

33

Y32

Y34

START

3TK

2845

-.EB

40

I II III

Zustimmschalter

3TK

2841

-1BB

40

A1

Y35

11Y 21Y 43YY321

Y22A2 14 24Y21

L+(24V DC)

M

M1 M2Q3 Q4Q1 Q2

Q1-Q4

Q1Q2

Q3Q4

Enabling button


Applications

5.6 3TK2845-.FB41/2/4 "Spring force interlocked tumbler"

Brief description:Monitoring an EMERGENCY-STOP control device and a protective door with tum-bler (spring force, interlocked when de-energized).


Function: See Status diagram: 3TK2845-.FB4. on page 2-22



Applications

Fig. 5-10: Spring force interlocked tumbler; closed and locked; max. achievable PL = e; SIL CL = 3

1

STAR

T

closed open

protective door

actuator

magnet

prot

ectiv

e do

or

enab

le

Y52

A2

Y22Y21Y12Y 11

48 Y64 5238

A1 Y51

24 Y821413

1

37

Y 35

E1(+)

E 2(-)

3SE5322-0SD21

52

42

51

41

11

12

21

22

21 22

3SE5112-0CH0113 14

L+(24 V DC )

Y65Y42Y41

Y72 Y 34

Q1

Q2

3TK

2845

-.FB

41/2

/4

Q 1Q 2

Q1 Q2M 1

M


Applications

5.7 3TK2845-.GB41/2/4 "Magnetic force interlocked tumbler"

Brief description:Monitoring an EMERGENCY-STOP control device and a protective door with tum-bler (magnetic force, interlocked when switched on).


Function: See Status diagram: 3TK2845-.GB4. on page 2-25



Applications

Fig. 5-11: Magnetic force interlocked tumbler; closed and locked; max. achievable PL = e; SIL CL = 3

closed open

protective door

actuator

magnet

prot

ectiv

e do

or

STAR

T

enab

le

Y52

A2

Y22Y21Y12Y 11

48 Y64 5238

A1 Y51Y65Y42Y41

Y7224 Y8231 41

1

37

Y 35

Y 34

3SE5322-0SB21

3SE5112-0CH01

L+(24 V DC )

3TK

2845

-.GB

41/2

/4

E1(+)

E 2(-)

52

42

51

41

11

12

21

22

21 22

13 14

M 1

Q 1Q 2

M

Q1

Q2

Q1 Q2


Applications


TO:SIEMENS AGDF CP PRM IM 2Werner von Siemens Str. 48

92220 Amberg/Germany

Fax: 09621 / 80-3337

Manual for Safety Relays 3TK2845 Multifunction Device

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3TK2845 Multifunction Device ManualNEB926208722000/RS-AC/005

3TK2845 Multifunction Device ManualNEB926208722000/RS-AC/005

Manual 3TK2845 Multifunction device, Edition 07/2015Safety NoticesTable of ContentsImportant notes1 Product description1.1 3TK2845 multifunction device1.2 Function, properties1.2.1 Several safety functions combined in one enclosure1.2.2 Examples of using 3TK2845 modules

1.3 3TK2845 order numbers

2 Functional information2.1 General2.1.1 Function description2.1.2 Symbol description

2.2 Versions2.2.1 3TK2845-.HB.. "Monitored and automatic start"2.2.2 3TK2845-.DB.. "Monitored start"2.2.3 3TK2845-.EB.. "Enabling button"2.2.4 3TK2845-.FB.. "Spring force interlocked tumbler"2.2.5 3TK2845-.GB.. "Magnetic force interlocked tumbler"

3 Technical data3.1 Technical data3.2 Terminals3.3 Terminal assignment3.4 Dimensional drawings

4 Mounting, wiring, commissioning4.1 Mounting and coding4.2 Wiring4.3 Meaning of the LED indicators

5 Applications5.1 3TK2845-.HB40 "Monitored start and automatic start", instantaneous outputs5.2 3TK2845-.HB41 "Monitored start and automatic start", time-delayed outputs5.3 3TK2845-.DB40 "Monitored startup", instantaneous outputs5.4 3TK2845-.DB41 "Monitored start", time-delayed outputs5.5 3TK2845-.EB40 "Enabling button"5.6 3TK2845-.FB41/2/4 "Spring force interlocked tumbler"5.7 3TK2845-.GB41/2/4 "Magnetic force interlocked tumbler"

Correction sheet

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Documents

Manual Safety relays 3TK2845 multifunction device...Important notes 3TK2845 Multifunction Device Manual iv NEB926208722000/RS-AC/005 Standards and approvals You can use the 3TK2845