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 Preferred typ
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| Ordering details
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| Product type description
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SRB 301ST-230V
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| Article number
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101177167
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| EAN code
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4030661307961
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| Approval
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| Approval
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 BG
 USA/CAN
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| Classification
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| Standards
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EN ISO 13849-1, IEC 61508, EN 60947-5-1
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| PL
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up e (STOP 0)
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| Control category
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up 4 (STOP 0)
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| DC
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99% (STOP 0)
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| CCF
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> 65 points
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| PFH value
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≤ 2,0 x 10-8/h (STOP 0)
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| SIL
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up 3 (STOP 0)
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| Mission time
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20 Years
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| - notice
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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.
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| Global Properties
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| Product name
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SRB 301ST-230V
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| Standards
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IEC/EN 60204-1, EN 60947-5-1, EN ISO 13849-1, IEC 61508
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Compliance with the Directives (Y/N) 
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Yes
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| Climatic stress
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EN 60068-2-78
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| Mounting
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snaps onto standard DIN rail to EN 60715
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| Terminal designations
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IEC/EN 60947-1
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| Materials
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| - Material of the housings
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Plastic, glass-fibre reinforced thermoplastic, ventilated
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| - Material of the contacts
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, self-cleaning, positive action
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| Weight
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250 g
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| Start conditions
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Automatic or Start button
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| Start input (Y/N)
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Yes
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| Feedback circuit (Y/N)
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Yes
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| Start-up test (Y/N)
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No
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| Reset after disconnection of supply voltage (Y/N)
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| Automatic reset function (Y/N)
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Yes
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| Reset with edge detection (Y/N)
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Yes
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| Pull-in delay
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| - ON delay with automatic start
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30 ms
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| Drop-out delay
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| - Drop-out delay in case of power failure
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100 ms (48 VAC);
300 ms (240 VAC)
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| - Drop-out delay in case of emergency stop
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≤ 30 ms
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| Mechanical data
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| Connection type
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Screw connection
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| Cable section
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| - Min. Cable section
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0,25 mm²
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| - Max. Cable section
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2.5 mm²
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| Pre-wired cable
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rigid or flexible
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| Tightening torque for the terminals
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0,6 Nm
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| Detachable terminals (Y/N)
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Yes
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| Mechanical life
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10.000.000 operations
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| Electrical lifetime
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Derating curve available on request
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| restistance to shock
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30 g / 11 ms
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| Resistance to vibration To EN 60068-2-6
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10...55 Hz, Amplitude 0,35 mm
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| Ambient conditions
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| Ambient temperature
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| - Min. environmental temperature
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−25 °C
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| - Max. environmental temperature
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+45 °C
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| Storage and transport temperature
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| - Min. Storage and transport temperature
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−40 °C
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| - Max. Storage and transport temperature
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+85 °C
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| Protection class
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| - Protection class-Enclosure
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IP40
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| - Protection class-Terminals
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IP20
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| - Protection class-Clearance
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IP54
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| Air clearances and creepage distances To IEC/EN 60664-1
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| - Rated impulse withstand voltage Uimp
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4 kV
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| Overvoltage category
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II To VDE 0110
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| - Degree of pollution
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2 To VDE 0110
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| Electromagnetic compatibility (EMC)
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| EMC rating
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conforming to EMC Directive
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| Electrical data
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| Rated DC voltage for controls
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| - Min. rated DC voltage for controls
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-
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| - Max. rated DC voltage for controls
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-
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| Rated AC voltage for controls, 50 Hz
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| - Min. rated AC voltage for controls, 50 Hz
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48 V
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| - Max. rated AC voltage for controls, 50 Hz
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240 V
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| Rated AC voltage for controls, 60 Hz
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| - Min. rated AC voltage for controls, 60 Hz
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48 V
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| - Max. rated AC voltage for controls, 60 Hz
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240 V
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| Contact resistance
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max. 100 mΩ
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| Power consumption
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max. 2.8 VA
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| Type of actuation
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AC
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| Switch frequency
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max. 5 Hz
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| Rated operating voltage Ue
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48 ... 240 VAC
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| Frequency range
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50 / 60 Hz
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| Electronic protection (Y/N)
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Yes
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| Fuse rating for the operating voltage
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primary side F1: Safety fuse, tripping current > 0,5 A
secondary side: Internal electronic trip, tripping current > 0,12 A
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| Current and tension on control circuits
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| - S11, S12, S21, S22, X2, X3
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24 VDC, Test current: approx. 45 mA
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| Bridging in case of voltage drops
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70 ms (48 VAC);
270 ms (240 VAC)
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| Inputs
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| Monitored inputs
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| - Short-circuit recognition (Y/N)
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No
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| - Wire breakage detection (Y/N)
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Yes
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| - Earth connection detection (Y/N)
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Yes
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| Number of shutters
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0 piece
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| Number of openers
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2 piece
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| Cable length
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1500 m with 1.5 mm²;
2500 m with 2.5 mm²
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| Conduction resistance
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max. 40 Ω
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| Outputs
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| Stop category
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0
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| Number of safety contacts
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3 piece
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| Number of auxiliary contacts
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1 piece
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| Number of signalling outputs
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0 piece
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| Switching capacity
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| - Switching capacity of the safety contacts
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max. 250 VAC, 6 A ohmic (inductive in case of appropriate protective wiring)
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| - Switching capacity of the auxiliary contacts
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24 VDC, 2 A
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| Fuse rating
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| - Protection of the safety contacts
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6.3 A slow blow
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| - Fuse rating for the auxiliary contacts
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2 A slow blow
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| Utilisation category To EN 60947-5-1
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AC-15: 230 V / 6 A
DC-13: 24 V / 6 A
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| Number of undelayed semi-conductor outputs with signaling function
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0 piece
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| Number of undelayed outputs with signaling function (with contact)
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1 piece
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| Number of delayed semi-conductor outputs with signaling function.
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0 piece
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| Number of delayed outputs with signalling function (with contact).
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0 piece
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| Number of secure undelayed semi-conductor outputs with signaling function
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0 piece
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| Number of secure, undelayed outputs with signaling function, with contact.
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3 piece
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| Number of secure, delayed semi-conductor outputs with signaling function
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0 piece
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| Number of secure, delayed outputs with signaling function (with contact).
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0 piece
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| LED switching conditions display
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| LED switching conditions display (Y/N)
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Yes
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| Number of LED´s
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3 piece
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| LED switching conditions display
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| - The integrated LEDs indicate the following operating states.
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| - Position relay K1
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| - Position relay K2
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| - Supply voltage UB
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| Miscellaneous data
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| Applications
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 Emergency-Stop button
 Guard system
 Pull-wire emergency stop switches
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| Dimensions
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| Dimensions
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| - Width
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22.5 mm
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| - Height
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100 mm
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| - Depth
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121 mm
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| notice
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| Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.
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| notice - Wiring example
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| 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).
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| The control recognises cable break in the monitoring circuit.
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| 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.
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| For 1-channel control, connect NC contact to S11/S12 and bridge S12/S22
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| 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
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| The wiring diagram is shown with guard doors closed and in de-energised condition.
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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
18.05.2013 -
19:44:43h Kasbase 2.2.17.F DBI
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Contact closed
Contact open
Setting range
Break point
Positive opening sequence/- angle
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SRB 031LC 
SRB 301ST-230V