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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• 1 Signalling output
• Suitable for signal processing of potential-free outputs, e.g. emergency stop command devices, position switches and solenoid interlocks
• Fit for signal evaluation of outputs of safety magnetic switches
• 3 safety contacts, STOP 0
• Suitable for signal processing of outputs connected to potentials (AOPDs), e.g. safety light grids/curtains

 
Preferred typ
 
Ordering details
 
Product type descriptionSRB301MA-24V
Article number101212415
EAN Code4030661446561
Replaced article number 101215369
eCl@ss27-37-19-01
 
Approval
 
Approval TÜV
USA/CAN
EAC
 
Classification
 
StandardsEN ISO 13849-1, IEC 61508, EN 60947-5-1
PLup e (STOP 0)
Control categoryup 4 (STOP 0)
DC99% (STOP 0)
CCF> 65 points
PFH value≤ 2,0 x 10-8/h (STOP 0)
SILup 3 (STOP 0)
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 lightSRB301MA
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
Weight230
Start conditionsStart button (monitored)
Start input (Y/N)Yes
Feedback circuit (Y/N)Yes
Start-up test (Y/N)No
Automatic reset function (Y/N)No
Reset with edge detection (Y/N)Yes
Pull-in delay
- ON delay with automatic starttyp. 100 ms
- ON delay with reset buttontyp. 15 ms, max. 20 ms
Drop-out delay
- Drop-out delay in case of power failuretyp. 80 ms
- Drop-out delay in case of emergency stoptyp. 10 ms, max. 15 ms
 
Mechanical data
 
Connection typeScrew connection
Cable section
- Min. Cable section0,25
- Max. Cable section1.5
Pre-wired cablerigid or flexible
Tightening torque for the terminals0,6
Detachable terminals (Y/N)No
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 / 2
- Overvoltage categoryIII To IEC/EN 60664-1
- Degree of pollution2 To IEC/EN 60664-1
 
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 consumptionmax. 1.8 W; 4.4 VA
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 > 0,5 A, Reset after approximately 1 second/s
Current and tension on control circuits
- S11, S12, S21, S2224 VDC, Test current: 10 mA
Bridging in case of voltage dropstyp. 80 ms
 
Inputs
 
Monitored inputs
- Short-circuit recognition (Y/N)Yes
- Wire breakage detection (Y/N)Yes
- Earth connection detection (Y/N)Yes
Number of shutters0
Number of openers2
Cable length1500 m with 1.5 mm²;
2500 m with 2.5 mm²
Conduction resistancemax. 40 Ω
 
Outputs
 
Stop category0
Number of safety contacts3
Number of auxiliary contacts1
Number of signalling outputs0
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)
min. 10 V / 10 mA
- Switching capacity of the auxiliary contacts(41-42): 24 VDC, 2 A
Fuse rating
- Protection of the safety contacts8 A slow blow
- Fuse rating for the auxiliary contacts2 A slow blow
Utilisation category To EN 60947-5-1AC-15: 230 V / 6 A
DC-13: 24 V / 6 A
Number of undelayed semi-conductor outputs with signaling function0
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).0
 
LED switching conditions display
 
LED switching conditions display (Y/N)Yes
Number of LED´s4
LED switching conditions display
- The integrated LEDs indicate the following operating states.
- Position relay K2
- Position relay K1
- Supply voltage
- Internal operating voltage Ui
 
Miscellaneous data
 
Applications Emergency-Stop button
Guard system
Pull-wire emergency stop switches
Safety light curtain
Safety sensor
 
Dimensions
 
Dimensions
- Width22.5 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
 
To secure a guard door up to PL 4 and Category #03#
Monitoring 1 guard door(s), each with a magnetic safety sensor of the BNS range
The feedback circuit monitors the position of the contactors Ka and Kb.
Switch setting: The cross-wire short detection function (factory default) is programmed by means of the switch located underneath the front cover of the module:
Pposition nQS (top):
no cross-wire short protection, suitable for 1-channel applications and applications with outputs with potential in the control circuits.
Position QS (bottom):
cross-wire short protection, suitable for 2-channel applications without outputs with potential in the control circuits.
For 1-channel control, connect NC contact to S11/S12 and bridge S12/S22 (QS-switch = nQS)
Connect potential p-type outputs of safety light grids/curtains to S12/S22. The devices must have the same reference potential. (QS-switch = nQS)
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 - 08:54:48h Kasbase 3.3.0.F.64I