PSR-MS20 / PSR-MS25
SILCL
IEC 62061
Safety relay for emergency stop and safety door
monitoring
Data sheet
106167_en_04
1
© PHOENIX CONTACT 2016-10-21
Description
Intended Use
Control
The safety relays are used to monitor single-channel signal
generators and to control actuators.
–
–
–
When the sensor circuit is interrupted, the safety relays
initiate the safe state.
The safety relays interrupt circuits in a safety-related way.
Achievable safety integrity
–
Possible signal generators
–
–
Emergency stop button
Door locking mechanisms
Single-Channel
Automatic start (PSR-MS20 only)
Manual, monitored start (PSR-MS25 only)
–
Suitable up to category 1, PL c (EN ISO 13849-1),
SILCL 1 (EN 62061)
Depending on the application, suitable up to
category 4, PL e (EN ISO 13849-1),
SILCL 3 (EN 62061)
Contact type
Additional features
–
–
1 undelayed enabling current path
1 digital signal output
The enabling current path drops out without delay according
to stop category 0 (EN 60204-1).
When the enabling current path is open, the signal output is
active.
The signal output transmits non-safety-related status
information.
–
–
Fixed screw connection
6.8 mm housing width
Approvals
WARNING: Risk of electric shock
Observe the safety regulations and installation notes in the corresponding section.
Make sure you always use the latest documentation.
It can be downloaded from the product at phoenixcontact.net/products.
This document is valid for the products listed in the “Ordering data”.
This document meets the same requirements as the original operating instructions with respect to the
contents.
PSR-MS20 / PSR-MS25
2
Table of contents
1
Description .............................................................................................................................. 1
2
Table of contents ..................................................................................................................... 2
3
Ordering data .......................................................................................................................... 3
4
Technical data ......................................................................................................................... 3
5
Safety regulations and installation notes.................................................................................. 7
6
Function description ................................................................................................................ 9
7
Function and time diagrams .................................................................................................... 9
8
Basic circuit diagram ............................................................................................................. 10
9
Derating................................................................................................................................. 10
10
Load curve............................................................................................................................. 10
11
Operating and indication elements ........................................................................................ 11
12
Mounting and removing ......................................................................................................... 12
13
Wiring .................................................................................................................................... 12
14
Startup................................................................................................................................... 13
15
Calculating the power dissipation .......................................................................................... 13
16
Diagnostics............................................................................................................................ 14
17
Application examples ............................................................................................................ 16
18
Attachment ............................................................................................................................ 20
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PSR-MS20 / PSR-MS25
3
Ordering data
Description
Type
Order No.
Pcs./Pkt.
PSR-MS20-1NO-1DO-24DC- 2904950
Safety relay for emergency stop and safety doors up to
SILCL 1, Cat. 1, PL c, depending on the application up to SC
SILCL 3, Cat. 4, PL e, 1-channel operation, automatic
start, 1 enabling current path, US = 24 V DC, fixed screw
terminal block
1
Safety relay for emergency stop and safety doors up to
PSR-MS25-1NO-1DO-24DC- 2904951
SILCL 1, Cat. 1, PL c, depending on the application up to SC
SILCL 3, Cat. 4, PL e, 1-channel operation, manual,
monitored start, 1 enabling current path, US = 24 V DC,
fixed screw terminal block
1
4
Technical data
Hardware/firmware version
HW/FW
≥ 00/--
The technical data and safety characteristics are valid as of the specified HW/FW version.
Input data
Rated control circuit supply voltage US
24 V DC -15 % / +10 %
Rated control supply current IS
typ. 42 mA
Input voltage range "0" signal
0 V DC ... 5 V DC (for safe Off; at S12)
Input current range "0" signal
0 mA ... 2 mA (for safe Off; at S12)
Inrush current
4.5 A (Δt = 120 µs at Us)
< 20 mA (with Us/Ix to S12)
< 10 mA (with Us/Ix at the start circuit)
Current consumption
< 5 mA (with Us/Ix to S12)
< 10 mA (with Us/Ix at the start circuit)
Power consumption at US
typ. 1 W
Voltage at input/start and feedback circuit
24 V DC -15 % / +10 %
Filter time
1 ms (at A1 in the event of voltage dips at Us)
max. 1.5 ms (at S12; test pulse width)
min. 7.5 ms (at S12; test pulse rate)
Test pulse rate = 5 x Test pulse width
Max. permissible overall conductor resistance
(Input and reset circuit at US)
150 Ω
Typical response time at Us
< 175 ms
Typical starting time with Us
< 250 ms (when controlled via A1)
Typical release time with Us
< 20 ms (when controlled via A1 or S12)
Recovery time
< 500 ms
Maximum switching frequency
0.5 Hz
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PSR-MS20 / PSR-MS25
Input data
Operating voltage display
1 x green LED
Status display
2 x green LEDs
Protective circuit
Surge protection Suppressor diode
Protection against polarity reversal for rated control circuit
supply voltage
Output data
Contact type
1 enabling current path
Contact material
AgSnO2
Minimum switching voltage
12 V AC/DC
Maximum switching voltage
250 V AC/DC (Observe the load curve)
Limiting continuous current
6 A (observe derating)
Maximum inrush current
6A
Inrush current, minimum
3 mA
Sq. Total current
ITH2 = I12 + I22 + ... + IN2
36 A2 (observe derating)
Switching capacity
min. 60 mW
Mechanical service life
10 x 106 cycles
Output fuse
6 A gL/gG (N/O contact)
4 A gL/gG (for low-demand applications)
Alarm outputs
Number of outputs
1 (digital, PNP)
Voltage
22 V DC (Us - 2 V)
Current
max. 100 mA
Maximum inrush current
500 mA (Δt = 1 ms at Us)
Short-circuit protection
no
General data
Relay type
Electromechanical relay with forcibly guided contacts in
accordance with IEC/EN 61810-3 (EN 50205)
Nominal operating mode
100% operating factor
Degree of protection
IP20
Min. degree of protection of inst. location
IP54
Mounting type
DIN rail mounting
Mounting position
vertical or horizontal
Assembly instructions
See derating curve
Dimensions (W/H/D)
6.8 x 93.1 x 102.5 mm
Type of housing
PBT yellow
Air clearances and creepage distances between the
power circuits
according to
DIN EN 50178
Rated insulation voltage
250 V AC
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PSR-MS20 / PSR-MS25
General data
Rated surge voltage/insulation
Safe isolation, reinforced insulation 6 kV between input circuit
and enabling current path
Basic insulation 4 kV between all current paths and housing
Degree of pollution
2
Overvoltage category
III
Connection data
Connection method
Screw connection
Conductor cross section, solid
0.2 mm² ... 2.5 mm²
Conductor cross section, flexible
0.2 mm² ... 2.5 mm²
Conductor cross section AWG/kcmil
26 ... 12
Stripping length
12 mm
Screw thread
M3
Ambient conditions
Ambient temperature (operation)
-40 °C ... 60 °C (observe derating)
Ambient temperature (storage/transport)
-40 °C ... 85 °C
Max. permissible relative humidity (operation)
75 % (on average, 85% infrequently, non-condensing)
Max. permissible humidity (storage/transport)
75 % (on average, 85% infrequently, non-condensing)
Maximum altitude
≤ 2000 m (Above sea level)
Information on operating height
See the “Using PSR devices at altitudes greater than
2000 m above sea level” section
Shock
15g
Vibration (operation)
10 Hz ...150 Hz, 2g
Conformance/Approvals
Conformance
CE-compliant
The full EC Declaration of Conformity can be downloaded for the product at phoenixcontact.net/products.
Approvals
Safety data
Stop category according to IEC 60204
0
Safety parameters for IEC 61508 - High demand
SIL
1 (up to SIL 3 depending on the application)
PFHD
1.5 x 10-9 (4 A DC13; 5 A AC15; 8760 switching cycles/year)
Demand rate
< 12 Months
Proof test interval
240 Months
Duration of use
240 Months
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PSR-MS20 / PSR-MS25
Safety parameters for IEC 61508 - Low demand
SIL
1 (up to SIL 3 depending on the application)
PFDavg
1.47 x 10-4
Proof test interval
60 Months
Duration of use
240 Months
Safety characteristic data according to EN ISO 13849
Category
1 (up to Cat. 4 depending on the application)
Performance level
c (up to PL e depending on the application)
Duration of use
240 Months
For applications in PL e, the required demand rate for the safety function is once per month.
Calculation basis
4 A DC13; 5 A AC15; 8760 switching cycles/year
Safety parameters for EN 62061
SILCL
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1 (up to SILCL 3 depending on the application)
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PSR-MS20 / PSR-MS25
5
Safety regulations and installation notes
WARNING: Death, serious personal injury or damage to equipment
Depending on the application, incorrect handling of the device may pose serious risks for the user or cause
damage to equipment.
• Observe all the safety notes and warning instructions provided in this chapter and elsewhere in this
document.
General
•
In operation
Observe the safety regulations of electrical engineering
and industrial safety and liability associations.
Disregarding these safety regulations may result in death,
serious personal injury or damage to equipment.
The device contains components that can be
damaged or destroyed by electrostatic
discharge.
•
When handling the device, observe the necessary
safety precautions against electrostatic discharge
(ESD) according to EN 61340-5-1 and IEC 61340-5-1.
Power supply units for 24 V supply
•
•
•
Only use power supply units with safe isolation
and SELV/PELV according to EN 50178/VDE 0160.
Provide external protection for the 24 V area.
Make sure that the power supply unit is able to supply
four times the nominal current of the external fuse, to
ensure that it trips in the event of an error.
Startup, mounting, and modifications
Startup, mounting, modifications, and upgrades may only be
carried out by an electrically skilled person.
• Before working on the device, disconnect the power.
• Carry out wiring according to the application. Refer to
the “Application examples” section for this.
Reliable operation is only ensured if the device is installed in
housing protected from dust and humidity.
• Install the device in housing protected from dust and
humidity (min. IP54).
106167_en_04
During operation, parts of electrical switching devices carry
hazardous voltages.
•
Protective covers must not be removed when operating
electrical switching devices.
For emergency stop applications, automatic startup of the
machine can pose serious risks for the user.
•
The machine must be prevented from restarting
automatically by a higher-level controller.
With the manual, monitored reset device, a machine start
may not be triggered in accordance with EN ISO 13849-1.
Inductive loads can lead to welded relay contacts.
•
Connect a suitable and effective protective circuit to
inductive loads.
•
Implement the protective circuit parallel to the load and
not parallel to the switch contact.
Magnetic fields can influence the device. The magnetic field
strength of the environment must not exceed 30 A/m.
•
Do not use the device in the vicinity of strong magnetic
fields (e.g., caused by transformers or magnetic iron).
Noise emission may occur when operating relay modules.
Wireless reception may be disrupted in residential areas.
The device is a Class A product.
•
Observe the requirements for noise emission for
electrical and electronic equipment (EN 61000-6-4).
Implement appropriate precautions against noise
•
emission.
PHOENIX CONTACT 7 / 21
PSR-MS20 / PSR-MS25
Faulty devices
The devices may be damaged following an error. Correct
operation can no longer be ensured.
• In the event of an error, replace the device.
Only the manufacturer or their authorized representative
may perform the following activities. Otherwise the warranty
is invalidated.
– Repairs to the device
– Opening the housing
Taking out of service and disposal
•
•
Dispose of the device in accordance with environmental
regulations.
Make sure that the device can never be reused.
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PSR-MS20 / PSR-MS25
6
Function description
7
Function and time diagrams
6.1
Single-channel sensor circuit
7.1
Time diagram PSR-MS20
The sensor circuit is not designed with redundancy.
The safety relay does not detect short and cross-circuits in
the sensor circuit.
A1/A2
S35
6.2
Automatic start
S12
13/14
PSR-MS20 only
M1
The device starts automatically after the sensor circuit has
been closed.
6.3
Manual, monitored start
A1/A2
PSR-MS25 only
S35
When the sensor circuit is closed, the device starts once the
start circuit has been closed and opened again by pressing
and releasing the reset button.
S12
13/14
A connected reset button is monitored.
6.4
Safe shutdown
When the sensor circuit opens, the enabling current path
opens without delay.
When the enabling current path is open, the device is in the
safe state.
Signal output M1 is active.
M1
Figure 1
7.2
Time diagram PSR-MS20
Time diagram PSR-MS25
A1/A2
S34
S12
Signal output M1 transmits non-safety-related
status information. Feedback of signal output
M1 to external basic devices for reasons of
functional safety is therefore not required.
13/14
M1
Figure 2
Time diagram PSR-MS25
Key:
A1/A2
S35
(PSR-MS20 only)
S34
(PSR-MS25 only)
S12
13/14
M1
106167_en_04
Automatic start
Start via external signal at S35 which is
not monitored
Power supply
Automatic start
Manual, monitored start
Input sensor circuit
Enabling current path, undelayed
Signal output (PNP), not securityrelevant
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PSR-MS20 / PSR-MS25
8
Basic circuit diagram
9
Derating
8.1
Block diagram PSR-MS20
9.1
Vertical or horizontal mounting position
S11 S12
PSR-MS20
S35
IN
K1
PWR
K1/K2
A2
M1
Figure 3
The derating curve applies for the following conditions:
– Mounting on a vertical or horizontal DIN rail
– Devices mounted next to each other without spacing
40
36
K2
24V DC
8.2
13
ITH² [A²]
A1
30
20
14
10
Block diagram PSR-MS20
0
Block diagram PSR-MS25
A1
S11 S12
S34
9
0
IN
PWR
40
K1
70
Derating curve - vertical or horizontal mounting
position, without spacing
10
Load curve
10.1
Ohmic and inductive load
M1
14
Block diagram PSR-MS25
1000
500
200
100
24 V DC power supply
0 V power supply
Signal output (PNP), not securityrelevant
Output 24 V
Input sensor circuit
S11
S12
S35
Automatic start
(PSR-MS20 only)
S34
Manual, monitored start
(PSR-MS25 only)
13/14
Enabling current path, undelayed
106167_en_04
60
K2
Key:
A1
A2
M1
50
TA [°C]
UDC [V]
Figure 4
30
K1/K2
24V DC
A2
20
13
Figure 5
PSR-MS25
10
50
20
10
0,1
0,2
0,5
1
2
5
10
IDC [A]
Figure 6
Relay load curve - ohmic and inductive load
Key:
Ohmic load
Inductive load
L/R = 0 ms
L/R = 40 ms
PHOENIX CONTACT 10 / 21
PSR-MS20 / PSR-MS25
11
Operating and indication elements
11.1
Connection versions
1
2
1
Fixed screw connection
Snap-on foot for DIN rail mounting
The year the device was constructed can be
found underneath the CE designation on the
housing.
APP
RO
VAL
S
14
HW
/F
Ser W: 00
ial N /-o. x
xxx
xxx
xxx
2
Warn
ing
whe - Do no
n en t se
ergiz pera
ed! te
PW
R
AWG 26-12
0,2-2,5 mm2
0,5-0,6 Nm
5-7 lb In
12 mm
Figure 7
Connection versions
11.2
Connection assignment
A
A
S
S
1
2
11
12
PWR
A
A
S
S
1
2
11
12
PWR
IN
IN
K1
K2
K1
K2
MS 20
MS 25
S 35
1 4
1 3
M 1
S 34
1 4
1 3
M 1
106167_en_04
A1
A2
S11
S12
PWR
IN
K1/K2
S35 (PSR-MS20 only)
S34 (PSR-MS25 only)
13/14
M1
24 V DC power supply
0 V power supply
Output 24 V
Input sensor circuit
Power LED (green)
Status indicator sensor circuit; LED (green)
Status indicator safety circuit; LED (green)
Automatic start
Manual, monitored start
Enabling current path, undelayed
Signal output (PNP), not security-relevant
PHOENIX CONTACT 11 / 21
PSR-MS20 / PSR-MS25
12
•
•
Mounting and removing
Mount the device on a 35 mm DIN rail according to
EN 60715.
To remove the device, use a screwdriver to release the
snap-on foot.
13.1
•
Signal generator connection versions
Connect suitable signal generators to S11/S12.
2
1
OSSD
S11
Figure 10
1
2
S11
S12
S12
Signal generator connection versions
Single-channel connection
Single-channel OSSD signal
13.2
Start and feedback circuit connection variants
Automatic start (PSR-MS20 only)
•
Figure 8
Bridge the contacts S11/S35.
Manual, monitored start (PSR-MS25 only)
Mounting and removing
•
13
•
Connect a reset button to contacts S11/S34 an.
A connected reset button is monitored.
Wiring
Connect the cables to the connection terminal blocks
using a screwdriver.
Start and feedback circuit
•
Place the relevant N/C contacts in path S11/S34 or
S11/S35 to monitor external contactors or extension
devices with force-guided contacts.
B
AWG 26-12
0,2-2,5 mm2
A
1
12 mm
S11
0,5-0,6 Nm
5-7 lb In
Connection of the cables
S35
Figure 11
1
2
3
Figure 9
2
4
3
K1
K1
K2
K2
S11
S35
S34
4
S11
S34
S11
Start and feedback circuit connection variants
Automatic start
Automatic start with monitored contact extension
Manual, monitored start with monitored contact
extension
Manual, monitored start
It is recommended that ferrules are used to
connect stranded cables.
For compliance with UL approval, use copper
wire that is approved up to 60°C/75°C.
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PSR-MS20 / PSR-MS25
14
•
Startup
15
Calculating the power dissipation
Apply the rated control circuit supply voltage (24 V DC)
at terminal blocks A1/A2.
The total power dissipation of the safety relay
is based on the input power dissipation and
the contact power dissipation for the same
and for different load currents.
The Power LED lights up.
• Close sensor circuit S11/S12.
The IN LED lights up.
Automatic start (PSR-MS20 only)
Input power dissipation
Enabling current path 13/14 closes.
PInput = UB² / (US/IS)
The K1/K2 LED lights up.
Contact power dissipation
Signal output M1 is not active.
With the same load currents:
Manual, monitored start (PSR-MS25 only)
PContact = n IL² 50 mΩ
•
•
With different load currents:
Press the reset button.
Release the reset button.
PContact = (IL1² + IL2² + ... + ILn²) 50 mΩ
Enabling current path 13/14 closes.
Total power dissipation
The K1/K2 LED lights up.
Signal output M1 is not active.
PTotal = PInput + PContact
therefore
PTotal = UB² / (US/IS) + n IL² 50 mΩ
or
PTotal = UB² / (US/IS) + (IL1² + IL2² + ... + ILn²) 50 mΩ
Key:
P
UB
US
IS
n
IL
106167_en_04
Power dissipation in mW
Applied operating voltage
Rated control circuit supply voltage
Rated control supply current
Number of enabling current paths used
Contact load current
PHOENIX CONTACT 13 / 21
PSR-MS20 / PSR-MS25
16
Diagnostics
The following section describes the LED indicators for
general states and error messages as well as possible
causes and remedies.
Signal output M1 - not safety-related
Signal output M1 transmits non-safety-related status information. Feedback of signal output M1 to external
basic devices for reasons of functional safety is therefore not required.
Function test/proof test
To verify the device function, proceed as follows:
• Demand the safety function by actuating the
corresponding safety equipment.
• Check whether the safety function was executed
correctly by switching the device on again.
WARNING: Loss of functional safety due
to malfunction.
If the proof test contains errors, the device no
longer functions correctly.
•
Replace the device.
If the device does not switch on again, the proof test failed.
16.1
General states
PWR
LED
ON
IN
LED
OFF
K1/K2
LED
OFF
ON
ON
OFF
ON
ON
ON
106167_en_04
State
Notes
All relays are not activated. The sensor circuit Possible error see error messages
is off.
The sensor circuit is active. Relays K1 and K2
are ready to start and await reset/start
command (S34 or S35).
The sensor circuit is active. All relays are
picked up.
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PSR-MS20 / PSR-MS25
16.2
Error Messages
PWR
LED
ON
IN
LED
OFF
K1/K2
LED
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
OFF
106167_en_04
State
Possible cause
The sensor circuit is actively
controlled, but no input LEDs
are lit up.
The sensor circuit is active.
The reset/start circuit (S34 or
S35) is/was activated. The
safety circuit (K1 and K2) is
not picking up.
Interrupt in the sensor circuit Check the sensor circuit/signal
or faulty signal generator.
generator. Then perform a
function test.
External error: the readback External error: check the
contact (external actuator) is actuator.
open in the reset circuit.
Internal error: perform a power
Internal error:
down reset with subsequent
1. The diagnostic contact is function test. If the error
not working correctly.
occurs again after the
2. An N/O contact is welded. function test, replace the
device.
Error during manual reset
Remove the error in the reset/
S34 (stuck-at at the input).
start circuit. Then perform a
function test.
The sensor circuit is active.
The reset/start circuit (S34)
is/was activated. The safety
circuit (K1 and K2) is not
picking up.
The sensor circuit is active.
Corrective
1. No supply voltage at A1/A Check the supply voltage.
2. Over- or undervoltage at
A1
PHOENIX CONTACT 15 / 21
PSR-MS20 / PSR-MS25
17
17.2
Application examples
Applications with the PSR-MS20
17.1
–
–
–
–
Emergency stop monitoring/automatic start
Single-channel emergency stop monitoring
Automatic start
Monitoring of external, force-guided contactors
Suitable up to category 1, PL c (EN ISO 13849-1),
SIL 1 (EN 62061)
Contactor K2 is not essential in order to
achieve category 1.
24V DC
–
–
–
–
Safety door monitoring/automatic start
Single-channel safety door monitoring
Automatic start
Monitoring of external, force-guided contactors
Suitable up to category 1, PL c (EN ISO 13849-1),
SIL 1 (EN 62061)
Contactor K2 is not essential in order to
achieve category 1.
24V DC
L
B1
L
K1
K2
A1
K1
S1
K2
A1
A2
S35
( )
S11
(+)
S11
S35
( )
(+)
S12
( )
K1
S12
( )
13
( )
M1
M
K1
( )
M1
K1
K2
14
K2
14
PSR-MS20
A2
13
PSR-MS20
K2
M
0V
K1
K2
Figure 13
N
Safety door monitoring/automatic start
Key:
0V
Figure 12
N
Emergency stop monitoring/automatic start
B1
K1/K2
Mechanical safety door switch
Force-guided contactors
Key:
S1
K1/K2
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Emergency stop button
Force-guided contactors
PHOENIX CONTACT 16 / 21
PSR-MS20 / PSR-MS25
17.2.1 Connection to failsafe controller/automatic start
–
–
–
–
Automatic start
Monitoring of external, force-guided contactors
Status transmission from M1 to the safe controller (not
safety-related)
Suitable up to category 4, PL e (EN ISO 13849-1), SIL 3
(EN 62061), if the failsafe controller meets PL e, SIL 3
and cross-circuits can be ruled out
WARNING: Loss of functional safety!
Make sure that the signal generator and the
safety relay have the same ground potential.
WARNING: Loss of functional safety!
The switch-on pulses sent by the controller
(light test) can lead to brief, unwanted
activation of the safety relay.
• Deactivate the light pulses/light tests,
unless they are safety-related.
Cross-circuits in the cable installation can be
excluded if the failsafe PLC, safety relay, and
external contactors K1 and K2 are located in
the same electrical installation space.
106167_en_04
Figure 14
Connection to error-free PLC/automatic start
Key:
Q0
I0
K1/K2
Digital output
Digital input
Force-guided contactors
PHOENIX CONTACT 17 / 21
PSR-MS20 / PSR-MS25
Applications with the PSR-MS25
17.3
–
–
–
–
17.4
Emergency stop monitoring/manual, monitored
start
Single-channel emergency stop monitoring
Manual, monitored start
Monitoring of external, force-guided contactors
Suitable up to category 1, PL c (EN ISO 13849-1),
SIL 1 (EN 62061)
–
–
–
–
Safety door monitoring/manual, monitored
start
Single-channel safety door monitoring
Manual, monitored start
Monitoring of external, force-guided contactors
Suitable up to category 1, PL c (EN ISO 13849-1),
SIL 1 (EN 62061)
Contactor K2 is not essential in order to
achieve category 1.
Contactor K2 is not essential in order to
achieve category 1.
24V DC
24V DC
L
L
S2
B1
K1
S2
K1
K2
S1
A1
K2
S11
S34
( )
(+)
S12
( )
13
K1
PSR-MS25
A1
S34
( )
S11
(+)
S12
( )
13
K1
A2
( )
M1
K2
14
PSR-MS25
A2
( )
M1
M
K2
14
K1
M
K2
K1
K2
0V
Figure 15
N
Emergency stop monitoring/manual,
monitored start
Key:
S1
S2
K1/K2
106167_en_04
Emergency stop button
Manual reset device
Force-guided contactors
0V
Figure 16
N
Safety door monitoring/manual, monitored
start
Key:
S2
B1
K1/K2
Manual reset device
Mechanical safety door switch
Force-guided contactors
PHOENIX CONTACT 18 / 21
PSR-MS20 / PSR-MS25
17.5
–
–
–
–
Connection to failsafe controller/manual, monitored start
Manual, monitored start
Monitoring of external, force-guided contactors
Status transmission from M1 to the safe controller (not
safety-related)
Suitable up to category 4, PL e (EN ISO 13849-1), SIL 3
(EN 62061), if the failsafe controller meets PL e, SIL 3
and cross-circuits can be ruled out
WARNING: Loss of functional safety!
Make sure that the signal generator and the
safety relay have the same ground potential.
WARNING: Loss of functional safety!
The switch-on pulses sent by the controller
(light test) can lead to brief, unwanted
activation of the safety relay.
• Deactivate the light pulses/light tests,
unless they are safety-related.
Cross-circuits in the cable installation can be
excluded if the failsafe PLC, safety relay, and
external contactors K1 and K2 are located in
the same electrical installation space.
106167_en_04
Figure 17
Connection to error-free PLC/manual,
monitored start
Key:
S2
Q0
I0
K1/K2
Manual reset device
Digital output
Digital input
Force-guided contactors
PHOENIX CONTACT 19 / 21
PSR-MS20 / PSR-MS25
18
Attachment
18.1
Using PSR devices at altitudes greater than
2000 m above sea level
The following section describes the special
conditions for using PSR devices at altitudes
greater than 2000 m above sea level.
Observe the relevant device-specific data
(technical data, derating, etc.) according to
the product documentation for the individual
device.
Altitude above sea
level
2000 m
2500 m
3000 m
3500 m
4000 m
4500 m
> 150 V AC/DC
2.
> 150 V AC/DC
4.
The following calculation and the illustrated
derating curve are provided as examples.
Perform the actual calculation and offset the
derating curve for the device used according
to the technical data and the “Derating”
section.
27 °C 0.906 24 °C
55 °C 0.906 49 °C
Limit the maximum switching voltage in accordance
with the table below. Observe the technical data for the
device.
Max. switching voltage
according to the
technical data for the
device
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