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
Deutsch  English  Francais  Nederlands  Italiano  Español  Português  Suomi  Svenska  Norsk  Dansk  Polska  日本語  Türkiye  中文  Português-br  
  
• Suitable for signal processing of potential-free outputs, e.g. emergency stop command devices, position switches and solenoid interlocks
• Suitable for signal processing of outputs connected to potentials (AOPDs), e.g. safety light grids/curtains
• 3 safety contacts, STOP 0;
2 safety contacts, STOP 1 (adjustable 1 … 30 s)
• 4 Signalling outputs
• Optional: Short-circuit recognition, Manual reset with edge detection in fail-safe circuit, Automatic reset function

 
Preferred typ
 
Ordering details
 
Product type descriptionSRB324ST 24V (V.3)
Article number101195504
EAN Code4030661446547
Replaced article number 101179876
eCl@ss27-37-19-01
 
Approval
 
Approval BG
USA/CAN
EAC
 
Classification
 
StandardsEN ISO 13849-1, IEC 61508, EN 60947-5-1
PLup e (STOP 0)
bis d (STOP 1)
Control categoryup 4 (STOP 0)
bis 3 (STOP 1)
DC99% (STOP 0)
> 60% (STOP 1)
CCF> 65 points
PFH value≤ 2,0 x 10-8/h (STOP 0)
≤ 2,0 x 10
-7/h (STOP 1)
SILup 3 (STOP 0)
bis 2 (STOP 1)
Mission time20 Years
- noticeThe 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
 
Permanent lightSRB324ST
StandardsIEC/EN 60204-1, EN 60947-5-1, EN ISO 13849-1, IEC 61508
Compliance with the Directives (Y/N) Yes
Climatic stressEN 60068-2-78
Mountingsnaps onto standard DIN rail to EN 60715
Terminal designationsIEC/EN 60947-1
Materials
- Material of the housingsPlastic, glass-fibre reinforced thermoplastic, ventilated
- Material of the contactsAgSn0, Ag-Ni, self-cleaning, positive action
Weight435
Start conditionsAutomatic or Start button ( Optional monitored)
Start input (Y/N)Yes
Feedback circuit (Y/N)Yes
Start-up test (Y/N)No
Automatic reset function (Y/N)Yes
Reset with edge detection (Y/N)Yes
Pull-in delay
- ON delay with automatic starttyp. 250 ms
- ON delay with reset buttontyp. 20 ms
Drop-out delay
- Drop-out delay in case of power failuretyp. 80 ms
- Drop-out delay in case of emergency stoptyp. 30 ms / ≤ 36 ms
 
Mechanical data
 
Connection typeScrew connection
Cable section
- Min. Cable section0,25
- Max. Cable section2.5
Pre-wired cablerigid or flexible
Tightening torque for the terminals0,6
Detachable terminals (Y/N)Yes
Mechanical life10.000.000 operations
Electrical lifetimeDerating curve available on request
restistance to shock30 g / 11 ms
Resistance to vibration To EN 60068-2-610…55 HZ, Amplitude 0,35 mm
 
Ambient conditions
 
Ambient temperature
- Min. environmental temperature−25
- Max. environmental temperature+60
Storage and transport temperature
- Min. Storage and transport temperature−40
- Max. Storage and transport temperature+85
Protection class
- Protection class-EnclosureIP40
- Protection class-TerminalsIP20
- Protection class-ClearanceIP54
Air clearances and creepage distances To IEC/EN 60664-1
- Rated impulse withstand voltage Uimp4 kV
- Overvoltage categoryIII To VDE 0110
- Degree of pollution2 To VDE 0110
 
Electromagnetic compatibility (EMC)
 
EMC ratingconforming to EMC Directive
 
Electrical data
 
Rated DC voltage for controls
- Max. rated DC voltage for controls20.4
- Max. rated DC voltage for controls28.8
Rated AC voltage for controls, 50 Hz
- Min. rated AC voltage for controls, 50 Hz20.4
- Max. rated AC voltage for controls, 50 Hz26.4
Rated AC voltage for controls, 60 Hz
- Min. rated AC voltage for controls, 60 Hz20.4
- Max. rated AC voltage for controls, 60 Hz26.4
Contact resistancemax. 100 mΩ
Power consumption3.2 W; 7.1 VA, plus signalling output
Type of actuationAC/DC
Rated operating voltage Ue24 VDC −15% / +20%, residual ripple max. 10%
24 VAC −15% / +10%
Operating current Ie
Frequency range50 / 60
Electronic protection (Y/N)Yes
Fuse rating for the operating voltageInternal electronic trip,
tripping current F1: > 2.5 A; F2 > 50 mA
(S11 - S31), > 800 mA (x 4);
Reset after disconnection of supply voltage
Current and tension on control circuits
- S11, S12, S21, S22, S31, S3224 VDC, Test current: 10 mA
- X1, X224 VDC, Start pulse: 350 mA / 15 ms
- X3, X424 VDC, Start pulse: 130 mA / 80 ms
- X4, X524 VDC, Start pulse: 140 mA / 15 ms
Bridging in case of voltage dropstyp. 70 ms
 
Inputs
 
Monitored inputs
- Short-circuit recognition (Y/N)optional
- Wire breakage detection (Y/N)Yes
- Earth connection detection (Y/N)Yes
Number of shutters0
Number of openers2
Cable length1-channel without cross-wire detection:
850 m with 1.5 mm²
1400 m with 2.5 mm²
2-channel with/ without cross-wire detection
Conduction resistancemax. 40 Ω
 
Outputs
 
- Stop category 1Residual current at ambient temperature up to: - 45°C = 12 A; - 55°C = 10 A; - 60°C = 8 A
Stop category0 / 1
- Stop category 0Residual current at ambient temperature up to: - 45°C = 18 A; - 55°C = 15 A; - 60°C = 12 A
Number of safety contacts5
Number of auxiliary contacts1
Number of signalling outputs3
Switching capacity
- Switching capacity of the safety contacts(13-14; 23-24; 33-34) max. 250 V, 8 A ohmic (inductive in case of appropriate protective wiring)
(47-48; 57-58) max. 250 V, 6 A ohmic (inductive in case of appropriate protective wiring)
- Switching capacity of the auxiliary contacts61-62: 24 VDC / 2 A
- Switching capacity of the signaling/diagnostic outputsY1-Y3: 24 VDC / 100 mA, residual current: 200 mA
Fuse rating
- Protection of the safety contacts8 A slow blow (13-14; 23-24)
6.3 A slow blow (37-38)
- Fuse rating for the auxiliary contacts2 A slow blow
- Fuse rating for the signaling/diagnostic outputs500 mA ( Internal electronic trip F3)
Utilisation category To EN 60947-5-113-14, 23-24, 33-34:
AC-15: 230 V / 6 A, DC-13: 24 V / 6 A
37-38, 47-48:
AC-15: 230 V / 3 A, DC-13: 24 V / 2 A
Note on the utilisation category
Number of undelayed semi-conductor outputs with signaling function3
Number of undelayed outputs with signaling function (with contact)1
Number of delayed semi-conductor outputs with signaling function.0
Number of delayed outputs with signalling function (with contact).0
Number of secure undelayed semi-conductor outputs with signaling function0
Number of secure, undelayed outputs with signaling function, with contact.3
Number of secure, delayed semi-conductor outputs with signaling function0
Number of secure, delayed outputs with signaling function (with contact).2
 
LED switching conditions display
 
LED switching conditions display (Y/N)Yes
Number of LED´s6
LED switching conditions display
- The integrated LEDs indicate the following operating states.
- Position relay K2
- Position relay K3
- Position relay K1
- Position relay K4
- Supply voltage
- Internal operating voltage Ui
 
Miscellaneous data
 
Applications Guard system
Emergency-Stop button
Pull-wire emergency stop switches
Safety light curtain
Safety sensor
 
Dimensions
 
Dimensions
- Width45 mm
- Height100 mm
- Depth121 mm
 
notice
 
Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.
 
notice - Wiring example
 
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).
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.
(H2) = Feedback circuit
The control recognises cross-short, cable break and earth leakages in the monitoring circuit.
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 23.02.2019 - 07:08:45h Kasbase 3.3.0.F.64I