PSR-MC42-2NO-1DO-24DC-SC - Safety relays

2702901

Safety relay with IO-Link for emergency stop, safety doors, and light grids, up to SIL 3, Cat. 4, PL e, 2 sensor circuits, automatic or manual, monitored start, 2 enabling current paths, 1 signal output, U_S = 24 V DC, plug-in screw terminal block

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Note on application	Only for industrial use
Note on application	As things stand now, we are preparing the product so that, as of December 11, 2027, it will comply with the requirements of the EU Cyber Resilience Act (CRA) based on the information currently available regarding the CRA.

Product type	Safety relays
Product family	PSRmini
Application	Emergency stop
	Safety door
	Light grid
	Magnetic switch
	Transponder
Control	1 and 2 channel
Relay type	Electromechanical relay with force-guided contacts in accordance with IEC/EN 61810-3
Special properties	The product is being prepared for compliance with the Cyber Resilience Act (CRA)
Insulation characteristics
Overvoltage category	II
Degree of pollution	2
Times
Typical response time	< 220 ms (automatic start)
	< 175 ms (manual, monitored start)
Typ. starting time with U_s	< 250 ms (when controlled via A1)
Typical release time	< 20 ms (on demand via the sensor circuit)
	< 20 ms (on demand via A1)
Restart time	< 1 s (Boot time)
Recovery time	< 500 ms
Start pulse length	≥ 500 ms (manual start)

Maximum power dissipation for nominal condition	6.45 W (U_S = 30 V, U_L = 30 V, I² = 72 A²)
Nominal operating mode	100% operating factor
Rated insulation voltage	320 V
Rated surge voltage/insulation	See data sheet, section “Insulation coordination”.
Supply
Designation	L+/L-
Nominal voltage for I/O supply	24 V DC -20 % / +25 % (Provided via the IO-Link interface of the IO-Link master.)
Current consumption	typ. 16 mA
Protective circuit	Serial protection against polarity reversal
	Suppressor diode
Supply
Designation	A1/A2
Rated control circuit supply voltage U_S	19.2 V DC ... 30 V DC
Rated control circuit supply voltage U_S	24 V DC -20 % / +25 % (provide external protection)
Rated control supply current I_S	typ. 60 mA
Power consumption at U_S	typ. 1.44 W
Inrush current	typ. 2.5 A (Δt = 500 µs at U_s)
Filter time	1 ms (at A1 in the event of voltage dips at U_s)
Protective circuit	Serial protection against polarity reversal
	Suppressor diode

Digital: Sensor circuit S0 (S12, S22)
Description of the input	safety-related sensor inputs
Number of inputs	2
Input voltage range "0" signal	0 V DC ... 5 V DC (S12)
	For S22, see note in “Signal generator connection versions” section.
Input voltage range "1" signal	11 V DC ... 30 V DC
Input current range "0" signal	0 mA ... 2 mA (S12, S22)
Inrush current	< 5 mA (typ. with U_S at S12, Δt = 500 µs)
	< 5 mA (typ. with U_S at S22/24 V, Δt = 500 µs)
	> -5 mA (typ. with U_S at S22/0 V, Δt = 500 µs)
Filter time	max. 1.5 ms (Test pulse width of low test pulses)
	Test pulse rate = 5 x Test pulse width
	Deactivate the switch-on pulses for safety applications.
Concurrence	∞
Max. permissible overall conductor resistance	150 Ω
Protective circuit	Suppressor diode
Current consumption	< 5 mA (typ. with U_S at S12)
	< 5 mA (typ. with U_S at S22/24 V)
	> -5 mA (typ. with U_S at S22/0 V)
Digital: Sensor circuit S1 (S32, S42)
Description of the input	safety-related sensor inputs
Number of inputs	2
Input voltage range "0" signal	0 V DC ... 5 V DC
Input voltage range "1" signal	11 V DC ... 30 V DC
Input current range "0" signal	0 mA ... 2 mA
Inrush current	< 20 mA (typ. with U_S)
Filter time	max. 1.5 ms (Test pulse width of low test pulses)
	Test pulse rate = 5 x Test pulse width
	Deactivate the switch-on pulses for safety applications.
Concurrence	∞
Max. permissible overall conductor resistance	150 Ω
Protective circuit	Suppressor diode
Current consumption	< 5 mA (typ. with U_S)
Digital: Diagnostic input (DGN)
Description of the input	non-safety-related
Number of inputs	1
Input voltage range	0 V DC ... 30 V DC
Protective circuit	Suppressor diode
Current consumption	typ. 30 mA
Digital: Start circuit (S34)
Description of the input	NPN (manual start), PNP (autostart)
Number of inputs	1
Input voltage range "1" signal	19.2 V DC ... 30 V DC (manual start, autostart: 0 V)
Inrush current	< 10 mA (typ. with U_S, Δt = 100 ms)
Max. permissible overall conductor resistance	150 Ω
Protective circuit	Suppressor diode
Current consumption	< 5 mA (typ. with U_S at S34/24 V)
	> -5 mA (typ. with U_S at S34/0 V)
IO-Link
Designation	IO-Link
Transmission speed	230 kbps (COM3)
Cycle Time	5 ms
Process data update	5 ms
Amount of process data	max. 31 Byte (Input data)
	max. 16 Byte (Output data)
Description of the input	IO-Link switching and communication cable
Number of inputs	1
Connection method	Screw connection
Connection technology	3-conductor
Number of ports	1
Port type	Class A

Relay: Enabling current path (13/14, 23/24)
Output description	safety-related N/O contacts
	2 NO contacts each in series, without delay, floating
Number of outputs	2 (undelayed)
Contact switching type	2 enabling current paths
Contact material	AgSnO₂
Switching voltage	min. 12 V AC/DC
	max. 250 V AC/DC
Switching power	min. 60 mW
Inrush current	min. 3 mA
	max. 6 A
Switching capacity	5 A (AC15)
	4 A (DC13)
Limiting continuous current	6 A
Sq. Total current	72 A² (observe derating)
Switching frequency	0.1 Hz
Mechanical service life	10x 10⁶ cycles
Output fuse	6 A gL/gG
	4 A gL/gG (for low-demand applications)
Signal: M1
Output description	PNP
	non-safety-related
Number of outputs	1
Voltage	approx. 22 V DC (U_s - 2 V)
Current	max. 100 mA
Maximum inrush current	500 mA (Δt = 1 ms at U_s)
Protective circuit	Suppressor diode

Connection technology
pluggable	yes
Conductor connection
Connection method	Screw connection
Conductor cross-section rigid	0.2 mm² ... 2.5 mm²
Conductor cross-section flexible	0.2 mm² ... 2.5 mm²
Conductor cross-section AWG	24 ... 12
Stripping length	7 mm
Screw thread	M3
Tightening torque	0.5 Nm ... 0.6 Nm

Status display	5 x LED (green)
Operating voltage display	1 x LED (green, yellow, red)

Width	17.5 mm
Height	112.2 mm
Depth	114.5 mm

Color (Housing)	yellow (RAL 1018)
Housing material	PA

Safety data
Stop category (EN 60204-1)	0
Safety data: EN ISO 13849
Performance level (PL)	e (4 A DC13; 5 A AC15; 8760 switching cycles/year)
Safety data: IEC 61508 - High demand
Safety Integrity Level (SIL)	3
Safety data: IEC 61508 - Low demand
Safety Integrity Level (SIL)	3
Safety data: EN IEC 62061
Safety Integrity Level (SIL)	3

Ambient conditions
Degree of protection	IP20
Min. degree of protection of inst. location	IP54
Ambient temperature (operation)	-25 °C ... 60 °C (observe derating)
Ambient temperature (storage/transport)	-40 °C ... 85 °C
Maximum altitude	≤ 2000 m (Above sea level)
Max. permissible humidity (storage/transport)	75 % (on average, 85% infrequently, non-condensing)
Max. permissible relative humidity (operation)	75 % (on average, 85% infrequently, non-condensing)
Shock	15g
Vibration (operation)	10 Hz ... 150 Hz, amplitude 0.15 mm, 2g

CE
Identification	CE-compliant

Mounting type	DIN rail mounting
Assembly note	See derating curve
Mounting position	vertical or horizontal

Item number	2702901
Packing unit	1 pc
Minimum order quantity	1 pc
Sales key	DN01
Product key	DNA181
GTIN	4055626458540
Weight per piece (including packing)	180.8 g
Weight per piece (excluding packing)	157.28 g
Customs tariff number	85371098
Country of origin	DE

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Accessories

Your advantages

2 enabling current paths, 1 digital signal output

Diagnostic data via IO-Link in combination with PSR-CT safety switches

For emergency stop and safety door monitoring, plus evaluation of light grids

Automatic and manual activation

1- and 2-channel control

2 sensor circuits

Up to Cat. 4/PL e in accordance with ISO 13849-1, SIL 3 in accordance with EN IEC 62061, SIL 3 in accordance with IEC 61508

ECLASS-13.0	27371819
ECLASS-15.0	27371819
ECLASS-15.0 ASSET	27250101

EU RoHS
Fulfills EU RoHS substance requirements	Yes
Exemption	7(a), 7(a)-I, 7(c)-I
China RoHS
Environment friendly use period (EFUP)	EFUP-50 An article-related China RoHS declaration table can be found in the download area for the respective article under "Manufacturer declaration". For all articles with EFUP-E, no China RoHS declaration table issued and required.
EU REACH SVHC
REACH candidate substance (CAS No.)	Lead (CAS: 7439-92-1)
SCIP	06c37c05-4d86-4236-997e-0585da70bfa9

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

PSR-MC42-2NO-1DO-24DC-SC - Safety relays

2702901

Product details

ECLASS

ETIM

UNSPSC

cULus Listed

Functional Safety

Compatible products

Your advantages

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

PSR-MC42-2NO-1DO-24DC-SC - Safety relays 2702901

Product details

ECLASS

ETIM

UNSPSC

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PSR-MC42-2NO-1DO-24DC-SC - Safety relays

2702901