DATASHEET
SRB301LC/B 24V
Suitable for the signal processing of outputs with contact sensors
Suitable for the signal processing of outputs with contact sensors
Suitable for signal processing of outputs connected to potentials
(AOPDs), e.g. safety light grids/curtains
3 safety contacts, STOP 0
1 Signalling output
Data
Ordering data
Product type description SRB301LC/B 24V
Article number (order number) 101177962
EAN (European Article Number) 4250116201686
eCl@ss number, Version 9.0 27-37-18-19
eCl@ss number, Version 11.0 27-37-18-19
ETIM number, version 7.0 EC001449
ETIM number, version 6.0 EC001449
Available until 31.12.2022
Approval - Standards
Certificates cULus
CCC
EAC
General data
Standards IEC 61508
IEC/EN 60204-1
EN 60947-5-1
EN ISO 13849-1
Climatic stress EN 60068-2-78
Enclosure material Glass-fibre reinforced thermoplastic, ventilated
Material of the contacts, AgSn0. self-cleaning, positive drive
electrical
Gross weight 230 g
General data - Features
Stop-Category 0
Wire breakage detection Yes
Start input Yes
Feedback circuit Yes
Automatic reset function Yes
Earth connection detection Yes
Integral System Diagnostics, Yes
status
Number of auxiliary contacts 1
Number of LEDs 4
Number of openers 2
Number of safety contacts 3
Safety appraisal
Standards EN 60947-5-1
IEC 61508
Safety appraisal - Relay outputs
Performance level, stop 0, up to e
Category, Stop 0 4
Diagnostic Coverage (DC) Level, ≥ 99 %
Stop 0
PFH-Value Stop 0 2.00 x 10⁻⁸ /h
Safety Integrity Level (SIL), Stop 3
0, suitable for applications in
Mission time 20 Year(s)
Common Cause Failure (CCF), 65
minimum
Mechanical data
Mechanical life, minimum 10,000,000 Operations
Mounting Snaps onto standard DIN rail to EN 60715
Mechanical data - Connection technique
Terminal Connector rigid or flexible
Screw terminals M20 x 1.5
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
Width 22.5 mm
Height 100 mm
Depth 121 mm
Ambient conditions
Degree of protection of the IP40
enclosure
Degree of protection of the IP54
mounting space
Degree of protection of clips or IP20
terminals
Ambient temperature, minimum -25 °C
Ambient temperature, maximum +45 °C
Storage and transport -40 °C
temperature, minimum
Storage and transport +85 °C
temperature, maximum
Resistance to vibrations to EN 10...55 Hz, Amplitude 0.35 mm, ± 15 %
60068-2-6
Restistance to shock 30 g / 11 ms
Ambient conditions - Insulation value
Rated impulse withstand 4 kV
voltage U
imp
Overvoltage category III
Degree of pollution to IEC/EN 2
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, 20.4 VAC
50 Hz, minimum
Rated control voltage at AC 50 26.4 VAC
Hz, maximum
Rated AC voltage for controls, 20.4 VAC
60 Hz, minimum
Rated control voltage at AC 60 26.4 VAC
Hz, maximum
Rated AC voltage for controls at 20.4 VDC
DC minimum
Rated control voltage at DC, 28.8 VDC
maximum
Electrical power consumption 1.7 W
Electrical power consumption 1.9 VA
Contact resistance, maximum 0.1 Ω
Note (Contact resistance) in new state
Drop-out delay in case of power 80 ms
failure, typically
Drop-out delay in case of 20 ms
emergency, typically
Pull-in delay at automatic start, 100 ms
maximum, typically
Pull-in delay at RESET, typically 20 ms
Electrical data - Safe relay outputs
Voltage, Utilisation category AC- 230 VAC
15
Current, Utilisation category AC- 6A
15
Voltage, Utilisation category DC- 24 VDC
13
Current, Utilisation category DC- 6A
13
Switching capacity, minimum 10 VDC
Switching capacity, minimum 10 mA
Switching capacity, maximum 250 VAC
Switching capacity, maximum 8A
Electrical data - Digital inputs
Conduction resistance, 40 Ω
maximum
Electrical data - Digital Output
Voltage, Utilisation category DC- 24 VDC
12
Current, Utilisation category DC- 0.1 A
12
Electrical data - Relay outputs (auxiliary contacts)
Switching capacity, maximum 24 VDC
Switching capacity, maximum 2A
Electrical data - Electromagnetic compatibility (EMC)
EMC rating EMC-Directive
Status indication
Indicated operating states Position relay K2
Position relay K1
Internal operating voltage U
i
Other data
Note (applications) Safety sensor
Guard system
Emergency-Stop button
Pull-wire emergency stop switches
Safety light curtain
Notes
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.
The control system recognises wire-breakage and earth faults in the monitoring
circuit.
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.
Automatic start: The automatic start is programmed by connecting the feedback
circuit to the terminals X1/X2. If the feedback circuit is not required, establish a
bridge.
For 1-channel control, connect NC contact to S11/S12 and bridge S12/S22
Connect potential p-type outputs of safety light grids/curtains to S12/S22. The
devices must have the same reference potential.
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); cross-wire monitoring and feedback circuit (H2)
Pictures
Product picture (catalogue individual photo)
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Symbol (technical standard)
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Wiring example
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Wiring example
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Wiring example
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Schmersal Canada Ltd., 29 Centennial Road, Unit 1, Orangeville, Ontario L9W 1R1 Canada
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: 2022-02-26, 10:20 a.m.
