Schmersal
101158200
SRB308IT-24VAC/DC
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Product Conditions:
Electrical data
- Frequency range
- 50 Hz | 60 Hz
- Operating voltage
- 24 VAC -15 % / +10 % | 24 VDC -15 % / +20 %
- Ripple voltage
- 10 %
- Rated operating voltage
- 24 VAC
- Rated operating voltage
- 24 VDC
- Operating current
- 125 mA
- 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
- Utilisation category AC-15
- 230 VAC
- Utilisation category AC-15
- 1.5 A
- Utilisation category DC-13
- 24 VDC
- Utilisation category DC-13
- 1.2 A
- Electrical power consumption
- 3 W
- Electrical power consumption
- 3 VA
- Contact resistance, maximum
- 0.1 Ω
- Note (Contact resistance)
- in new state
- Drop-out delay in case of "emergency stop", maximum
- 15 ms
- Pull-in delay at automatic start, maximum, typically
- 60 ms
- Pull-in delay at RESET, typically
- 200 ms
- Material of the contacts, electrical
- AgSn0, Ag-Ni, self-cleaning, positive drive
Note
- Note (General)
- Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.
Mechanical data - Dimensions
- Width
- 45 mm
- Height
- 100 mm
- Depth
- 121 mm
Ambient conditions - Insulation values
- Rated impulse withstand voltage U
- 4 kV
- Overvoltage category
- III
- Degree of pollution
- 2
General data - Features
- Stop-Category
- 0
- Electronic Fuse
- Yes
- Wire breakage detection
- Yes
- Cross-circuit detection
- Yes
- Removable Terminals
- Yes
- Start input
- Yes
- Feedback circuit
- Yes
- Automatic reset function
- Yes
- Reset edge detection
- Yes
- Earth connection detection
- Yes
- Integral system diagnostics, status
- Yes
- Number of auxiliary contacts
- 2
- Number of LEDs
- 5
- Number of normally closed (NC)
- 2
- Number of undelayed semi-conductor outputs with signaling function
- 6
- Number of safety contacts
- 3
- Number of signalling outputs
- 6
General data
- Standards
- EN IEC 62061 | EN ISO 13849-1 | EN IEC 60947-5-1 | EN IEC 60947-5-3 | EN IEC 60947-5-5 | EN IEC 61508 | EN IEC 60204-1 | EN IEC 60947-1
- Climatic stress
- EN 60068-2-78
- Enclosure material
- Glass-fibre reinforced thermoplastic, ventilated
- Gross weight
- 480 g
Safety classification
- Standards
- EN IEC 60947-5-1 | EN IEC 61508
- Mission time
- 20 Year(s)
- Common Cause Failure (CCF), minimum
- 65
- Performance Level, stop 0, up to
- e
- Category, Stop 0
- 4
- Diagnostic Coverage (DC) Level, Stop 0
- ≥ 99 %
- PFH value, Stop 0
- 2.00 x 10⁻⁸ /h
- Safety Integrity Level (SIL), Stop 0, suitable for applications in
- 3
Wiring example
- Note (Wiring diagram)
- The wiring diagram is shown with guard doors closed and in de-energised condition. | The ISD tables (Intergral System Diagnostics) for analysis of the fault indications and their causes are shown in the appendix. | 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. | Connect potential p-type outputs of safety light grids/curtains to S12/S22. The devices must have the same reference potential. | 2 channel control shown for a guard-door monitor with two contacts, of which at least one contact has positive break, with external reset button (R) and feedback circuit (H2). (example without cross-wire monitoring) | For 2-channel control with cross-wire monitoring, connect the NC contact to S11/S12 and S31/S32 and bridge S21/S22 | For 1-channel control, connect NC contact to S11/S12 and bridge S21/S22 and S31/S32 | "Start function / Reset button: The function "trailing edge" is programmed by means of the "AF" switch located underneath the housing cover (switch position = 1). The automatic start is programmed by bridging terminals X3/X5 and by switching the "AF" switch to 0. The time offset between the channels is approx. 100 ms. An endless time offset between the channels 1 and 2 is programmed by bridging the terminals X3/X6." | F1 = Hybrid fuse | F2 = Fuse for signalling outputs
Other data
- Note (applications)
- Guard system | Pull-wire emergency stop switches | Safety light curtain | Emergency stop button
Ambient conditions
- Degree of protection of the enclosure
- IP40
- Degree of protection of the mounting space
- IP54
- Degree of protection of clips or terminals
- IP20
- Ambient temperature
- -25 ... +45 °C
- Storage and transport temperature, minimum
- -40 °C
- Storage and transport temperature, maximum
- +85 °C
- Resistance to vibrations
- 10 ... 55 Hz, Amplitude 0.35 mm
- Restistance to shock
- 30 g / 11 ms
Mechanical data - Connection technique
- Termination
- 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
- Mechanical life, minimum
- 10,000,000 Operations
- Mounting
- Snaps onto standard DIN rail to EN 60715
Specifications
- Width
- 45 mm
- Height
- 100 mm
- Depth
- 121 mm
Approvals - Standards
- Certificates
- cULus
Electrical data - Electromagnetic compatibility (EMC)
- EMC rating
- EMC-Directive
Electrical data - Digital inputs
- Conduction resistance, maximum
- 40 Ω
Status indication
- Indicated operating states
- Position relay K2 | Position relay K1 | Internal operating voltage U | Position relay K3