Notes Switch travel diagram
  Contact closed
  Contact open
  Setting range
  Break point
  Positive opening sequence/- angle
VS  adjustable range of NO contact
  adjustable range of NC contact
N   after travel
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• Suitable for signal processing of potential-free outputs, e.g. emergency stop command devices, position switches and solenoid interlocks
• 3 safety contacts, STOP 0
• 1 Signalling output

 
Preferred typ
 
Ordering details
 
Product type description SRB 301ST-230V
Article number 101177167
EAN code 4030661307961
 
Approval
 
Approval BG
USA/CAN
 
Classification
 
Standards EN ISO 13849-1, IEC 61508, EN 60947-5-1
PL up e (STOP 0)
Control category up 4 (STOP 0)
DC 99% (STOP 0)
CCF > 65 points
PFH value ≤ 2,0 x 10-8/h (STOP 0)
SIL up 3 (STOP 0)
Mission time 20 Years
- notice The PFH value is applicable for the combinations listed in the table for contact load (K) (current through enabling paths) and switching cycle number (n-op/y).
In case of 365 operating days per year and a 24-hour operation, this results in the specified switching cycle times (t-cycle) for the relay contacts.
Diverging applications on request.
 
Global Properties
 
Product name SRB 301ST-230V
Standards IEC/EN 60204-1, EN 60947-5-1, EN ISO 13849-1, IEC 61508
Compliance with the Directives (Y/N) Yes
Climatic stress EN 60068-2-78
Mounting snaps onto standard DIN rail to EN 60715
Terminal designations IEC/EN 60947-1
Materials
- Material of the housings Plastic, glass-fibre reinforced thermoplastic, ventilated
- Material of the contacts , self-cleaning, positive action
Weight 250 g
Start conditions Automatic or Start button
Start input (Y/N) Yes
Feedback circuit (Y/N) Yes
Start-up test (Y/N) No
Reset after disconnection of supply voltage (Y/N)
Automatic reset function (Y/N) Yes
Reset with edge detection (Y/N) Yes
Pull-in delay
- ON delay with automatic start 30 ms
Drop-out delay
- Drop-out delay in case of power failure 100 ms (48 VAC);
300 ms (240 VAC)
- Drop-out delay in case of emergency stop ≤ 30 ms
 
Mechanical data
 
Connection type Screw connection
Cable section
- Min. Cable section 0,25 mm²
- Max. Cable section 2.5 mm²
Pre-wired cable rigid or flexible
Tightening torque for the terminals 0,6 Nm
Detachable terminals (Y/N) Yes
Mechanical life 10.000.000 operations
Electrical lifetime Derating curve available on request
restistance to shock 30 g / 11 ms
Resistance to vibration To EN 60068-2-6 10...55 Hz, Amplitude 0,35 mm
 
Ambient conditions
 
Ambient temperature
- Min. environmental temperature −25 °C
- Max. environmental temperature +45 °C
Storage and transport temperature
- Min. Storage and transport temperature −40 °C
- Max. Storage and transport temperature +85 °C
Protection class
- Protection class-Enclosure IP40
- Protection class-Terminals IP20
- Protection class-Clearance IP54
Air clearances and creepage distances To IEC/EN 60664-1
- Rated impulse withstand voltage Uimp 4 kV
Overvoltage category II To VDE 0110
- Degree of pollution 2 To VDE 0110
 
Electromagnetic compatibility (EMC)
 
EMC rating conforming to EMC Directive
 
Electrical data
 
Rated DC voltage for controls
- Min. rated DC voltage for controls -
- Max. rated DC voltage for controls -
Rated AC voltage for controls, 50 Hz
- Min. rated AC voltage for controls, 50 Hz 48 V
- Max. rated AC voltage for controls, 50 Hz 240 V
Rated AC voltage for controls, 60 Hz
- Min. rated AC voltage for controls, 60 Hz 48 V
- Max. rated AC voltage for controls, 60 Hz 240 V
Contact resistance max. 100 mΩ
Power consumption max. 2.8 VA
Type of actuation AC
Switch frequency max. 5 Hz
Rated operating voltage Ue 48 ... 240 VAC
Frequency range 50 / 60 Hz
Electronic protection (Y/N) Yes
Fuse rating for the operating voltage primary side F1: Safety fuse, tripping current > 0,5 A
secondary side: Internal electronic trip, tripping current > 0,12 A
Current and tension on control circuits
- S11, S12, S21, S22, X2, X3 24 VDC, Test current: approx. 45 mA
Bridging in case of voltage drops 70 ms (48 VAC);
270 ms (240 VAC)
 
Inputs
 
Monitored inputs
- Short-circuit recognition (Y/N) No
- Wire breakage detection (Y/N) Yes
- Earth connection detection (Y/N) Yes
Number of shutters 0 piece
Number of openers 2 piece
Cable length 1500 m with 1.5 mm²;
2500 m with 2.5 mm²
Conduction resistance max. 40 Ω
 
Outputs
 
Stop category 0
Number of safety contacts 3 piece
Number of auxiliary contacts 1 piece
Number of signalling outputs 0 piece
Switching capacity
- Switching capacity of the safety contacts max. 250 VAC, 6 A ohmic (inductive in case of appropriate protective wiring)
- Switching capacity of the auxiliary contacts 24 VDC, 2 A
Fuse rating
- Protection of the safety contacts 6.3 A slow blow
- Fuse rating for the auxiliary contacts 2 A slow blow
Utilisation category To EN 60947-5-1 AC-15: 230 V / 6 A
DC-13: 24 V / 6 A
Number of undelayed semi-conductor outputs with signaling function 0 piece
Number of undelayed outputs with signaling function (with contact) 1 piece
Number of delayed semi-conductor outputs with signaling function. 0 piece
Number of delayed outputs with signalling function (with contact). 0 piece
Number of secure undelayed semi-conductor outputs with signaling function 0 piece
Number of secure, undelayed outputs with signaling function, with contact. 3 piece
Number of secure, delayed semi-conductor outputs with signaling function 0 piece
Number of secure, delayed outputs with signaling function (with contact). 0 piece
 
LED switching conditions display
 
LED switching conditions display (Y/N) Yes
Number of LED´s 3 piece
LED switching conditions display
- The integrated LEDs indicate the following operating states.
- Position relay K1
- Position relay K2
- Supply voltage UB
 
Miscellaneous data
 
Applications Emergency-Stop button
Guard system
Pull-wire emergency stop switches
 
Dimensions
 
Dimensions
- Width 22.5 mm
- Height 100 mm
- Depth 121 mm
 
notice
 
Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.
 
notice - Wiring example
 
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).
The control recognises cable break 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.
For 1-channel control, connect NC contact to S11/S12 and bridge S12/S22
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
The wiring diagram is shown with guard doors closed and in de-energised condition.

K.A. Schmersal GmbH & Co. KG, Möddinghofe 30, D-42279 Wuppertal
The data and values have been checked throroughly. Technical modifications and errors excepted.
Generiert am 02.09.2014 - 18:45:06h Kasbase 2.2.18.F DBI