Product image


  • 1 Signalling output
  • 3 safety contacts, STOP 0
  • Fit for signal evaluation of outputs of safety magnetic switches
  • Suitable for signal processing of outputs connected to potentials (AOPDs), e.g. safety light grids/curtains
  • Suitable for signal processing of potential-free outputs, e.g. emergency stop command devices, position switches and solenoid interlocks
Ordering data
Product type description
Article number (order number)
EAN (European Article Number)
eCl@ss number, Version 9.0
General data
Product name
IEC 61508
IEC/EN 60204-1
ISO 13849-1
EN 60947-5-1
EN 81-20/-50
Climatic stress
EN 60068-2-78
Enclosure material
Glass-fibre reinforced thermoplastic, ventilated
Material of the contacts, electrical
AgSn0. self-cleaning, positive drive
Gross weight
250.000 g
General data - Features
Electronic Fuse
Wire breakage detection
Short-circuit recognition
Removable Terminals
Start input
Feedback circuit
Automatic reset function
Reset edge detection
Earth connection detection
Integral System Diagnostics, status
Number of auxiliary contacts
Number of LEDs
Number of openers
Number of safety contacts
Safety appraisal
ISO 13849-1
EN 62061
IEC 61508
Safety appraisal - Relay outputs
Performance level, stop 0, up to
Category, Stop 0
Diagnostic Coverage (DC) Level, Stop 0
≥ 99 %
PFH-Value Stop 0
2.00 x 10⁻⁸ /h
Safety Integrity Level (SIL), Stop 0, applicable for
Mission time
20 Year(s)
Common Cause Failure (CCF), minimum
Mechanical data
Snaps onto standard DIN rail to EN 60715
Mechanical life, minimum
10,000,000 Operations
Mechanical data - Connection technique
Terminal Connector
Screw connection, plug-in
rigid or flexible
Terminal designations
IEC/EN 60947-1
Cable section, minimum
0.25 mm²
Cable section, maximum
2.5 mm²
Tightening torque of Clips
0.6 Nm
Mechanical data - Dimensions
22.5 mm
120 mm
121 mm
Ambient conditions
Protection class of the enclosure
Protection class of the Clearance
Protection class of Clips or Terminals
Ambient temperature, minimum
-25 °C
Ambient temperature, maximum
+60 °C
Storage and transport temperature, minimum
-40 °C
Storage and transport temperature, maximum
+85 °C
Resistance to vibrations to EN 60068-2-6
10 ... 55 Hz, Amplitude 0.35 mm
Restistance to shock
30 g / 11 ms
Ambient conditions - Insulation value
Rated impulse withstand voltage
4 kV
Overvoltage category
Degree of pollution to IEC/EN 60664-1
Electrical data
Frequency range
50 Hz
60 Hz
Rated operating voltage
24 VAC -15% / +10%
24 VDC -15%/+20%, residual ripple max. 10%
Rated AC voltage for controls, 50 Hz, minimum
20.4 VAC
Rated control voltage at AC 50 Hz, maximum
26.4 VAC
Rated AC voltage for controls, 60 Hz, minimum
20.4 VAC
Rated control voltage at AC 60 Hz, maximum
26.4 VAC
Rated AC voltage for controls at DC minimum
20.4 VDC
Rated control voltage at DC, maximum
28.8 VDC
Electrical power consumption
2 W
Electrical power consumption
4.9 VA
Contact resistance, maximum
0.1 Ω
Note (Contact resistance)
in new state
Drop-out delay in case of power failure, typically
80 ms
Drop-out delay in case of emergency, typically
20 ms
Pull-in delay at automatic start, maximum, typically
100 ms
Pull-in delay at RESET, typically
20 ms
Electrical data - Safe relay outputs
Voltage, Utilisation category AC15
230 VAC
Current, Utilisation category AC-15
6 A
Voltage, Utilisation category DC13
24 VDC
Current, Utilisation category DC13
6 A
Switching capacity, minimum
10 VDC
Switching capacity, minimum
10 mA
Switching capacity, maximum
250 VAC
Switching capacity, maximum
8 A
Electrical data - Digital inputs
Conduction resistance, maximum
40 Ω
Electrical data - Relay outputs (auxiliary contacts)
Switching capacity, maximum
24 VDC
Switching capacity, maximum
2 A
Electrical data - Electromagnetic compatibility (EMC)
EMC rating
Status indication
Note (LED switching conditions display)
QS: cross-wire short detection status (LED on when cross-wire short detection active).
Indicated operating states
Position relay K2
Position relay K1
Internal operating voltage Ui
Other data
Note (applications)
Safety sensor
Guard system
Emergency-Stop button
Pull-wire emergency stop switches
Safety light barriers
Note (General)
Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.
Circuit example
Note (Wiring diagram)
The wiring diagram is shown with guard doors closed and in de-energised condition.
Input level: The example shows a 2-channel control of a guard door monitoring with two position switches, whereof one with positive break, external reset button (R) and feedback circuit (H2).
Relay outputs: Suitable for 2 channel control, for increase in capacity or number of contacts by means of contactors or relays with positive-guided contacts.
The control recognises cross-short, cable break and earth leakages in the monitoring circuit.
Switch setting: The cross-wire short detection function (factory default) is programmed by means of the switch located underneath the front cover of the module: Pposition nQS (top): no cross-wire short protection, suitable for 1-channel applications and applications with outputs with potential in the control circuits. Position QS (bottom): cross-wire short protection, suitable for 2-channel applications without outputs with potential in the control circuits.
For 1-channel control, connect NC contact to S11/S12 and bridge S12/S22 (QS-switch = nQS)
Connect potential p-type outputs of safety light grids/curtains to S12/S22. The devices must have the same reference potential. QS-switch = nQS
Automatic start: The automatic start is programmed by connecting the feedback circuit to the terminals S12/X3. If the feedback circuit is not required, establish a bridge.
F1 = Hybrid fuse
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K.A. Schmersal GmbH & Co. KG, Möddinghofe 30, D-42279 Wuppertal
The details and data referred to have been carefully checked. Images may diverge from original. Further technical data can be found in the manual. Technical amendments and errors possible.
Generated on 25.10.2020 03:16:17

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