Phoenix Contact PSR-CT Series User manual

Original operating instructions
Non-contact
safety switch PSR-CT

2019-01-25
PHOENIX CONTACT GmbH & Co. KG • Flachsmarktstraße 8 • 32825 Blomberg • Germany
phoenixcontact.com
108366_en_01
Non-contact safety switch PSR-CT
Designation As of version Order No.
PSR-CT-F-SEN-1-8 V1.1.0 2702976
PSR-CT-C-SEN-1-8 V1.1.0 2702972
PSR-CT-M-SEN-1-8 V1.1.0 2702975
PSR-CT-C-ACT V1.0.0 2702973
Original operating instructions
This user manual is valid for:
UM EN PSR-CT, Revision 01

Table of contents
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Table of contents
1 For your safety ...........................................................................................................................6
1.1 Identification of warning notes ...............................................................................6
1.2 Qualification of users .............................................................................................6
1.3 Field of application of the product..........................................................................7
1.3.1 Intended use ..........................................................................................7
1.3.2 Foreseeable misuse ...............................................................................8
1.3.3 Product changes ....................................................................................8
1.4 Safety notes...........................................................................................................9
1.4.1 General safety notes ..............................................................................9
1.4.2 Electrical safety ....................................................................................10
1.4.3 Safety of machines or systems ............................................................11
1.4.4 Safety when starting applications .........................................................11
1.5 Directives and standards .....................................................................................11
1.6 Documentation ....................................................................................................12
1.7 Safety hotline.......................................................................................................12
2 Product description and method of operation ..........................................................................13
2.1 Product features ..................................................................................................13
2.2 PSR-CT components...........................................................................................13
2.2.1 Approved combinations .......................................................................13
2.2.2 Mounting accessories ..........................................................................14
2.2.3 Optional accessories ............................................................................14
2.3 Design .................................................................................................................15
2.4 Inputs and outputs ...............................................................................................16
2.4.1 24 V supply connection ........................................................................16
2.4.2 Safety inputs ........................................................................................16
2.4.3 Start/reset input ....................................................................................17
2.4.4 Safety outputs ......................................................................................18
2.4.5 Signal output/diagnostic output ............................................................18
2.4.6 Switching states of the outputs .............................................................19
2.5 Connector pin assignment...................................................................................20
2.6 Coding types .......................................................................................................21
2.7 Active sensor areas and response area...............................................................22
2.8 Actuation positions and travel directions..............................................................23
2.9 Limit range monitoring .........................................................................................24
2.10 Series connection................................................................................................24
2.11 Error safety ..........................................................................................................25
2.12 Safe state ............................................................................................................25

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3 Mounting ..................................................................................................................................26
3.1 Positioning and distances....................................................................................26
3.2 Mounting instructions...........................................................................................30
3.3 Mounting..............................................................................................................31
4 Electrical connection ................................................................................................................32
4.1 Connection notes.................................................................................................32
4.1.1 Notes on using Y distributors and dummy plugs ..................................33
4.1.2 UL notes ...............................................................................................33
4.2 Fuse protection for the power supply...................................................................34
4.3 Requirements on connecting cables....................................................................34
4.4 Maximum cable lengths.......................................................................................35
4.4.1 Checking the planned design ...............................................................36
5 Startup .....................................................................................................................................38
5.1 Startup information ..............................................................................................38
5.2 Safety switches with multicode sensors...............................................................38
5.3 Safety switches with unicode or fixcode sensors.................................................38
5.3.1 Teaching in actuators ...........................................................................39
6 Function test ............................................................................................................................40
6.1 Performing the function test.................................................................................40
7 Service and maintenance ........................................................................................................42
8 LED status indicators and switching states ..............................................................................43
8.1 Recovery in the event of an error .........................................................................45
9 Application examples ...............................................................................................................46
9.1 Application information ........................................................................................46
9.2 PSR-CT safety switches with safety relay............................................................47
9.2.1 Series connection with central reset on the switching device ...............47
9.2.2 Series connection with central reset for all safety switches ..................49
9.2.3 Series connection with local reset on all safety switches ......................51
9.2.4 Series connection with mixed startup behavior ....................................53
9.3 PSR-CT safety switch connected to a safe controller ..........................................55

Table of contents
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10 Technical data and ordering data .............................................................................................57
10.1 Technical data .....................................................................................................57
10.1.1 System properties of safety switches ...................................................57
10.1.2 Technical data for the sensors .............................................................57
10.1.3 Technical data for the actuator .............................................................60
10.1.4 Safety-related characteristics ...............................................................62
10.1.5 Interface types according to ZVEI classification ...................................62
10.1.6 Approvals .............................................................................................62
10.2 Ordering data.......................................................................................................63
A Technical appendix...................................................................................................................64
A 1 Explanation of switching distances ......................................................................64
A 2 Explanation of the typical system times ...............................................................65
A 3 FCC / IC conformity .............................................................................................66
B Revision history ........................................................................................................................67

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1 For your safety
Read this user manual carefully and keep it for future reference.
1.1 Identification of warning notes
1.2 Qualification of users
The use of products described in this user manual is oriented exclusively to:
– Qualified personnel who plan and design safety equipment for machines and systems
and are familiar with regulations governing occupational safety and accident preven-
tion.
– Qualified personnel who install and operate safety equipment in machines and sys-
tems.
Qualified personnel Qualified personnel are people who, because of their education, experience, and instruction
and their knowledge of relevant standards, regulations, accident prevention, and service
conditions, have been authorized by those responsible for the safety of the system to carry
out any required operations and who are able to recognize and avoid any possible dangers.
Requirements Knowledge of the following topics is required:
– Handling safety components
– Valid EMC regulations
– Valid regulations governing occupational safety and accident prevention
This symbol indicates hazards that could lead to personal injury.
There are three signal words indicating the severity of a potential injury.
DANGER
Indicates a hazard with a high risk level. If this hazardous situation is not
avoided, it will result in death or serious injury.
WARNING
Indicates a hazard with a medium risk level. If this hazardous situation is not
avoided, it could result in death or serious injury.
CAUTION
Indicates a hazard with a low risk level. If this hazardous situation is not avoided,
it could result in minor or moderate injury.
This symbol together with the NOTE signal word warns the reader of actions that
might cause property damage or a malfunction.
Here you will find additional information or detailed sources of information.

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1.3 Field of application of the product
PSR-CT safety switches are suitable for use in applications for contact-free detection of
secure positions of doors, flaps, or moving parts of a machine, for example.
1.3.1 Intended use
Safety function As locking devices without guard locking device, PSR-CT safety switches perform the fol-
lowing safety functions:
– Monitoring the position of movable guards
– Secure position monitoring on machines
Combined with a movable guard and the machine control system, the safety switch prevents
a dangerous machine function from being executed as long as the guard is open. A stop
command is triggered when the guard is opened during hazardous machine operation.
For intended use, comply with the requirements for installation and operation, in particular
according to the following standards:
–EN ISO 13849-1, Safety-related parts of control systems
– EN ISO 14119, Interlocking devices associated with guards
–EN 60204-1, Electrical equipment of machines
Fulfilled requirements and
safety integrity
Depending on the conditions of use, the safety switch meets the following requirements and
safety integrity features:
– Design 4 according to EN ISO 14119
– Requirements according to EN 60947-5-3
– Suitable up to category 4, PL e (EN ISO 13849-1), SIL 3 (IEC 61508)
Technical data and envi-
ronmental conditions
Only use the device according to the defined technical data and environmental conditions.
 See Section “Technical data” on page 57.
Approved components Only use approved components and combinations for PSR-CT safety switches.
 See Section “PSR-CT components” on page 13.

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1.3.2 Foreseeable misuse
– The safety switch may not be used as a stop.
– Do not connect any other signals to the safety inputs of a PSR-CT safety switch. Only
the following signals are permitted:
– Connection to 24 V DC for a single switch or the first switch in a series connection
with PSR-CT safety switches
– Connection through the safety outputs of a PSR-CT safety switch in a series con-
nection with PSR-CT safety switches
1.3.3 Product changes
Modifications to hardware and firmware of the device are not permitted.
Incorrect operation or modifications to the device can endanger your safety or damage the
device. Do not repair the device yourself. If the device is defective, please contact
Phoenix Contact.
WARNING: Serious risks due to inappropriate use
Inappropriate or unintended use, as well as manipulation of the safety switch, can lead to
serious danger for the user or damage to the machine or system.
•Please refer to the detailed information in standard EN ISO 14119.

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1.4 Safety notes
1.4.1 General safety notes
Documentation
Safety of personnel
and equipment
The safety ofpersonnel and equipment can only be assured if the safety switch isused cor-
rectly.
 See Section “Intended use” on page 7.
Startup, mounting, and
modifications
Startup, mounting, modifications, and upgrades may only be carried out by qualified person-
nel.
Installationconditions and
tamper protection
Safety components may not be bridged, turned away, removed or rendered ineffective in
another manner.
•Observe the measures for reducing the bypassing possibilities of locking devices
according to EN ISO 14119, Section 7.
The switching procedure may only be triggered by actuators designed specifically for this
purpose.
•Make sure that no bypassing by replacement actuators takes place.
•For this, restrict the access to actuators.
Safety switches and actuators may not be used as a stop.
•Observe EN ISO 14119, Sections 5.2 and 5.3 for attaching safety switches and actua-
tors.
Defective devices The devices might be damaged following an error. Correct operation can no longer be
ensured.
•In the event of an error, replace the device.
Do not open the housing Only the manufacturer or their authorized representative may perform the following activi-
ties. Otherwise the warranty is invalidated.
– Repairs to the device
– Opening the housing
Decommissioning and dis-
posal
•Dispose of the device in accordance with environmental regulations.
•Make sure that the device can never be reused.
WARNING: Serious risks due to inappropriate use
Depending on the application, inappropriate use of the safety switch may pose serious
risks for the user.
•Observe the safety notes in this section.
•Observe the warning instructions provided elsewhere in this document.
Observe all information in this user manual and the accompanying documents.
See Section “Documentation” on page 12.

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1.4.2 Electrical safety
Electrical connection Electrical connection may only be carried out by qualified personnel.
PELV power supply All electrical connections have to be insulated from the mains using suitable measures.
•Observe the requirements according to EN 60204-1, Section 6.4.
•Use safety transformers according to IEC 61558-2-6 with limitation of the output voltage
in the event of an error.
•Another option is to use an equivalent insulation measure according to PELV require-
ments.
•Use the same power source for all devices that are electrically connected to the safety
switch.
Ground contact • Use the same ground contact for all devices that are electrically connected to the safety
switch.
Fuse protection for power
supply
•Protect the power supply with a suitable external fuse.
 See Section “Fuse protection for the power supply” on page 34.
Protective circuit in the
case of inductive loads
All electrical outputs require an adequate protective circuit in the case of inductive loads.
•Protect the outputs with a freewheeling diode.
•Implement the protective circuit in parallel to the load.
•Do not use RC suppressors.
Sources of interference
from power devices
Power devices may represent a major source of interference.
•Remove the input and output circuits for signal processing locally from these sources
of interference.
•Ensure the cable installation of the safety circuits is as far away as possible from the
lines of the power circuits.
EMC interference For avoiding EMC interference:
•Ensure that the physical ambient and operating conditions at the installation location
meet the requirements of EN 60204-1, Section 4.4.2.
•Observe possible fields of interference for devices like frequency converters or induc-
tion heating systems. Observe the manufacturer's information.
ESD information
WARNING: Loss of safety function/hazardous shock currents
Incorrect installation can result in the loss of the safety function as well as hazardous
shock currents. Depending on the application, there may be serious risks for the user.
•Observe the notes on electrical safety.
•Observe the warning instructions provided elsewhere in this document.
•Plan the devices used and their installation in the system according to the specific
requirements.
•Recheck plants and systems retrofitted with the safety switch.
NOTE: Electrostatic discharge
Electrostatic discharge can damage or destroy the components. When handling the
device, observe the necessary safety precautions against electrostatic discharge (ESD)
according to EN 61340-5-1 and IEC 61340-5-1.

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1.4.3 Safety of machines or systems
Draw up and implement a
safety concept
The machine or system manufacturer and the operator are responsible for the safety of the
machine or system and the application in which the machine or system is used. In order to
use the device described in this document, you must have drawn up an appropriate safety
concept for your machine or system. This includes risk assessment according to the direc-
tives and standards mentioned in Section “Directives and standards” on page 11.
Risk assessment, valida-
tion and function test
•Before using the device, perform risk assessment for the machine or system.
•Validate your entire safety system.
•Carry out a new validation every time you make a safety-related modification.
•Perform a function test on a regular basis.
Achievable safety integrity Functional safety is guaranteed for the device as a single component. However, this does
not guarantee functional safety for the entire machine or system. In order to achieve the
desired safety level for the entire machine or system, define the safety requirements for the
machine or system, as well as how to implement them, from both a technological and orga-
nizational perspective.
1.4.4 Safety when starting applications
Start conditions Take the following into consideration when determining the start conditions for your machine
or system:
– The machine or system may only be started if it can be ensured that nobody is present
in the danger zone.
– If required: meet the requirements of EN ISO 13849-1 with regard to the manual reset
function.
Pressing a reset button must not cause automatic startup of a dangerous machine func-
tion.
– Meet the requirements of EN ISO 12100 with regard to closing safety equipment:
Closing of safety equipment must not cause automatic startup of a dangerous machine
function. A separate start command must be used. For exceptions, see EN ISO 12100
or the relevant C standards.
1.5 Directives and standards
The directives and standards complied with by the PSR-CT safety switches can be found in
the certificate issued by the approval body and in the EC declaration of conformity.
These documents are available on the Internet.
See phoenixcontact.net/products.
For separate notes on FCC / IC conformity, refer to the Appendix “FCC / IC conformity” on
page 66.

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1.6 Documentation
Latest documentation Always use the latest documentation.Changes or additions to documentation can be found
on the Internet.
See phoenixcontact.net/products.
Also observe the documentation of any additional devices used together with the safety
switches.
1.7 Safety hotline
Should you have any technical questions, please contact our 24-hour hotline.
Phone: [phone]
E-mail: [email protected]

Product description and method of operation
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2 Product description and method of operation
2.1 Product features
The PSR-CT safety switches offer the following features:
– Tamper protection via RFID transponder technology
– OSSD safety outputs for safe switching-off
– Safety inputs for series connection according to EN ISO 14119
– Start/reset input for autostart or manual monitored start
– Signal output/diagnostic output
– LED indicators
– 4 actuation positions, 3 travel directions
– 3 coding types
2.2 PSR-CT components
The PSR-CT safety switch is made up of the following components:
–Sensor with different coding type
for mounting on the fixed part of the safety equipment
designation: PSR-CT-...-SEN-1-8
– Coded actuator
for mounting on moving part of the safety equipment
designation: PSR-CT-C-ACT
2.2.1 Approved combinations
The sensor and actuator combinations with checkmarks are approved combinations.
Table 2-1 Approved PSR-CT combinations
Actuator
Sensor PSR-CT-C-ACT
PSR-CT-F-SEN-1-8 
PSR-CT-C-SEN-1-8 
PSR-CT-M-SEN-1-8 

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2.2.2 Mounting accessories
The following accessories are provided with the actuator of the safety switch:
–Safety screws for mounting to the safety equipment
–Caps for the mounting slots to protect against dirt accumulation
2.2.3 Optional accessories
The following accessories are available for easy connection:
–Y distributor for the wiring of
– Series connection
– Manual startup behavior
– Integrated diagnostics via signal contact
–Dummy plug for each sensor circuit
 See Section “Ordering data” on page 63.
The functional safety range from Phoenix Contact will provide you with suitable evalua-
tion devices for use with PSR-CT safety switches.
See phoenixcontact.net/products.

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2.3 Design
Product image
LED status indicators The sensor has two LED indicators.
The LED indicators show general states and error messages of the safety switch.
 See Section “LED status indicators and switching states” on page 43.
Positioning arrows Two arrows are printed on the sensor, one arrow on each side.
One arrow is printed on the actuator, on one side only.
The arrows indicate the permissible actuation positions and correct alignment of the sensor
and actuator with one another.
 See Section “Actuation positions and travel directions” on page 23 and Section “Mount-
ing” on page 26.
Mounting slots In the housing, the sensor and actuator each has two mounting slots each for mounting to
the safety equipment. The 3-step mounting slots of the actuator can be used to set the
required distance to the sensor. The actuator is mounted using the provided safety screws.
 See Section “Mounting” on page 26.
M12 connection The sensor is connected via an 8-pos. M12 connector.
 See Section “Electrical connection” on page 32.
Year of manufacture and
version
The year of manufacture and the current version number are located on the housing under
the serial number in the format YY VX.X.X.
Figure 2-1 PSR-CT safety switch
1PSR-CT-C-ACT actuator
2PSR-CT-...-SEN-1-8 sensor
12
PSRswitch
PSR-CT-C-ACT
Ord.-No.
2702973
CONT
ACT
PHOENIX
GmbH& Co.KG
32825 Blomberg
Germany
PSRswitch
PSR-CT-F-SEN-1-8
Ord.-No.
Serial No.
123456654321
18V1.1.0
2702976
Output: 24 VDC
#

DIAG
STATE
DIAG Red LED
STATE Green LED

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2.4 Inputs and outputs
The sensor of the safety switch provides the following inputs and outputs via the 8-pos. M12
connector:
– 24 V supply connection
– 2 safety inputs
– Start/reset input
– 2 safety outputs (OSSD)
– 1 signal output/diagnostic output
2.4.1 24 V supply connection
Designation: UB, 0 V
Power supply of sensor The UB and 0 V connections are used to supply the sensor with adequate voltage. When
doing so, observe the requirements on the power supply.
 See Section “Electrical safety” on page 10.
 See Section “Technical data for the sensors” on page 57.
Protect the power supply with a suitable external fuse.
 See Section “Fuse protection for the power supply” on page 34.
Power supply of actuator The actuator is inductively supplied with power via the sensor as soon as the actuator has
reached the switch-on distance.
2.4.2 Safety inputs
Designation: FI1A, FI1B
Safety inputs FI1A and FI1B are used for safe series connection of several safety switches.
Safe series connection Connect the safety inputs of the first switch in a series connection to 24 V DC. Connect the
safety inputs of all other switches in the series connection to the safety outputs of the previ-
ous safety switch.
Single switch When using a single safety switch, connect the safety inputs to 24 V DC.

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2.4.3 Start/reset input
Designation: START
Local start/reset circuit The safety switch provides two possible startup behaviors:
–Autostart
The sensor is switched on automatically as soon as a valid actuator is detected in the
response area.
–Manual, monitored start
The sensor is switched on under the following conditions:
– If there is a valid actuator in the response area
And:
– After a local reset button has been pressed and released again
Implement the desired startup behavior of the safety switch via the corresponding wiring of
the START input.
Autostart For the automatic startup behavior, the sensor expects a clock signal from safety output
FO1A at the START input.
•For this, bridge the START input with the FO1A safety output.
Manual, monitored start If the sensor does not detect a clock signal from the FO1A/FO1B safety outputs at the
START input, the sensor is in manual, monitored, start behavior.
The sensor expects a signal change at the START input as the start command.
•Connect a reset button with 24 V DC to the START input.
Start pulse Manual, monitored start takes place with a falling edge of a 24 V signal (release of the reset
button). The start signal is subject to time monitoring: The 24 V signal must be applied at the
START input for at least 100 ms and 2 s, maximum.
Central reset for switch
chain
Also observe the information and assistance notes in the following sections:
– Section “Safety when starting applications” on page 11
– Section “Application examples” on page 46
The safety function can be centrally reset in the event that several switches are connected
in series. For this, execute the reset function at the evaluating switching device, and oper-
ate the individual switches with automatic startup behavior.

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2.4.4 Safety outputs
Designation: FO1A, FO1B
The OSSD outputs FO1A and FO1B are used for safely switching off the output circuit.
The actuator moves away from the sensor when the safety equipment is opened. The actu-
ator approaches the sensor when the safety equipment is closed.
Switching on When the actuator has reached the switch-on distance, power is supplied via the sensor,
and data transmission starts.
If the sensor detects a permissible coding, the safety outputs are switched on depending on
the selected startup behavior.
Safe switching off If the actuator leaves the response area of the sensor, the safety outputs are switched in a
safety-related manner.
 See Section “Switching states of the outputs” on page 19.
Test pulses The safety outputs generate test pulses:
– When switched on
– When switched off during device start
Downstream devices must tolerate these test pulses.
 See “Times” in Section “Technical data” on page 57.
 See Section “Interface types according to ZVEI classification” on page 62.
2.4.5 Signal output/diagnostic output
Designation: DGN
Non-safety-related The signal output is switched on as soon as the actuator has left the response area of the
sensor. The information is non-safety-related. The information is used for evaluating the
position of safety equipment, for example.
 See Section “Switching states of the outputs” on page 19.
Observe the corresponding switching distances according to the actuation position and
travel direction.
See Section “Mounting” on page 26 and Section “Technical data for the actuator” on
page 60.

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2.4.6 Switching states of the outputs
Switching states The outputs have the following switching states when safety equipment is open or closed.
The switch-on state depends on the selected startup behavior.
Table 2-2 Switching states
Output Safety equipment closed Safety equipment open
– Actuator within response area
– Permissible coding
– Start command present/auto-
start
– Actuator within response area
– Permissible coding
– Start command not present
– Actuator outside response
area
FO1A
FO1B
On Off Off
DGN Off On On
Overview of the switching states in combination with the LED indicators for general states
and error messages:
See Section “LED status indicators and switching states” on page 43.

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2.5 Connector pin assignment
The sensor connector has the following pin assignment. Use the position of the connector's
coding tap as a guide.
Figure 2-2 View of the connector and pin assignment
Pin assignment
65
4
3
2
1
7
8
START 8
UB 2
0V 7
FI1A 6
FI1B 1
F01A 3
F01B 4
DGN 5
Table 2-3 Pin assignment of the sensor connector
Pin Designation Description
1 FI1B Enable input for channel 2
2 UB 24 V DC power supply
3 FO1A Safety output for channel 1
4 FO1B Safety output for channel 2
5 DGN Signal output/diagnostic output
6 FI1A Enable input for channel 1
7 0 V 0 V DC ground
8 START Start/reset input