PSR-MS21-1NO-1DO-24DC-SC - Safety relays

2702192

Safety relay for failsafe controllers up to SIL 3, Cat. 4, PL e, 1-channel operation, autostart, 1 enabling current path, U_S = 24 V DC in accordance with IEC 61131-6, fixed screw terminal block

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Note on application
Note on application	Only for industrial use

Product type	Safety relays
Product family	PSRmini
Application	Controllers
Control	1-channel
Relay type	Electromechanical relay with force-guided contacts in accordance with IEC/EN 61810-3
Insulation characteristics
Overvoltage category	III
Degree of pollution	2
Times
Typical response time	< 150 ms (automatic start)
Typ. starting time with U_s	< 250 ms (when controlled via A1)
Typical release time	< 20 ms (when controlled via A1)
Restart time	< 1 s (Boot time, after switching on the supply voltage)
Recovery time	< 500 ms (following demand of the safety function)

Maximum power dissipation for nominal condition	3.1 W (U_S = 30 V, I_L² = 36A², P_Total max = 1.3 W + +1.8 W)
Nominal operating mode	100% operating factor
Rated insulation voltage	250 V AC
Rated surge voltage/insulation	Safe isolation, reinforced insulation 6 kV between input circuit and enabling current path (13/14) Basic insulation 4 kV between all current paths and housing
Supply
Designation	24V
Rated control circuit supply voltage U_S	24 V DC -20 % / +25 %
Inrush current	< 11.5 A (typ. with U_S, Δt = 25 ns)
Protective circuit	Serial protection against polarity reversal; Suppressor diode
	Short-circuit protection

Digital: A1
Description of the input	NPN
Number of inputs	1 (safety-related)
Input voltage range "0" signal	0 V DC ... 5 V DC
Input voltage range "1" signal	19.2 V ... 30 V
Input current range "0" signal	0 mA ... 2 mA
Inrush current	< 150 mA (typ. with U_S, Δt = 25 ns)
Filter time	3 ms (Test pulse width of low test pulses)
	1 s (Test pulse rate for low test pulse)
	1 ms (Test pulse width, high test pulse)
	100 ms (Test pulse rate, high test pulse)
	Unless switch-on pulses/light tests are safety-related, they should be disabled.
Max. permissible overall conductor resistance	150 Ω (Input and start circuits at U_S)
Protective circuit	Suppressor diode
Current consumption	typ. 35 mA (at 24 V)
Digital: Start circuit (S35)
Description of the input	NPN
Number of inputs	1 (non-safety-related)
Input voltage range "1" signal	20.4 V ... 26.4 V
Inrush current	< 10 mA
Max. permissible overall conductor resistance	150 Ω
Voltage at input/start and feedback circuit	24 V DC -20 % / +25 %
Current consumption	< 10 mA

Relay: Enabling current path (13/14)
Output description	2 N/O contacts each in series, safety-related, floating
Number of outputs	1 (undelayed)
Contact switching type	1 enabling current path
Contact material	AgSnO₂
Switching voltage	min. 12 V AC/DC
	max. 250 V AC/DC
Switching capacity	min. 60 mW
Inrush current	min. 3 mA
	max. 6 A
Limiting continuous current	6 A
Sq. Total current	36 A² (observe derating)
Switching frequency	max. 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	non-safety-related
Number of outputs	1 (digital, PNP)
Voltage	22 V DC (Us - 2 V DC)
Current	max. 100 mA
Maximum inrush current	500 mA (Δt = 1 ms at U_s)
Protective circuit	Suppressor diode

Connection technology
pluggable	no
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	26 ... 12
Stripping length	12 mm
Screw thread	M3
Tightening torque	0.5 Nm ... 0.6 Nm

Status display	2 x LED (green)
Operating voltage display	1 x LED (green)

Width	6.8 mm
Height	93.1 mm
Depth	102.5 mm

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

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

Ambient conditions
Degree of protection	IP20
Min. degree of protection of inst. location	IP54
Ambient temperature (operation)	-40 °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
Certificate	CE-compliant

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

Item number	2702192
Packing unit	1 pc
Minimum order quantity	1 pc
Sales key	DNA171
Product key	DNA171
GTIN	4055626010199
Weight per piece (including packing)	83.4 g
Weight per piece (excluding packing)	69 g
Customs tariff number	85371000
Country of origin	DE

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Your advantages

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

Low housing width of just 6.8 mm

1-channel control

1 enabling current path, 1 digital signal output

Couples digital output signals from failsafe controllers to I/O devices (valves, etc.) for electrical isolation and power adaptation

Automatic activation

EU RoHS
Fulfills EU RoHS substance requirements	Yes
Exemption	7(a), 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	d482e8c4-47b3-4f50-a5f5-17993ad7e57b

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

PSR-MS21-1NO-1DO-24DC-SC - Safety relays

2702192

Product details

ECLASS

ETIM

UNSPSC

Functional Safety

cULus Listed

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Your advantages

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

PSR-MS21-1NO-1DO-24DC-SC - Safety relays 2702192

Product details

ECLASS

ETIM

UNSPSC

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Your advantages

PSR-MS21-1NO-1DO-24DC-SC - Safety relays

2702192