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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• Fail-safe delay timer
• Time adjustable from 0,1 s to 99 min
• 3 safety contacts
• 2 Signalling outputs

Preferred typ
Ordering details
Product type descriptionAZS 2305
Article number101126703
EAN Code4030661058986
Approval TÜV
StandardsEN ISO 13849-1, IEC 61508
PLup d
Control categoryup 3
PFH value1.0 x 10-7/h
SILup 2
Mission time20 Years
Switching frequency c
Global Properties
Permanent lightAZS 2305
StandardsIEC/EN 60204-1, EN ISO 13849-1, BG-GS-ET-20
Compliance with the Directives (Y/N) Yes
Mountingsnaps onto standard DIN rail to EN 60715
- Material of the housingsPlastic, glass-fibre reinforced thermoplastic
Start conditionsAutomatic
Start input (Y/N)No
Feedback circuit (Y/N)No
Reset after disconnection of supply voltage (Y/N)Yes
Automatic reset function (Y/N)Yes
Reset with edge detection (Y/N)No
Mechanical data
Connection typeScrew connection
Cable section
- Min. Cable section-
- Max. Cable section4
Pre-wired cablerigid or flexible
Tightening torque for the terminals0,4
Detachable terminals (Y/N)No
noticeAll indications about the cable section are including the conductor ferrules.
restistance to shock30 g / 11 ms
Resistance to vibration To EN 60068-2-610…55 HZ, Amplitude 0,35 mm
Time range0,1 s … 99 min.
Minimum time tmin.0,1 s
Maximum time tmax.99 min.
Timing tolerance< 2 %
Ambient conditions
Ambient temperature
- Min. environmental temperature0
- Max. environmental temperature+55
Storage and transport temperature
- Min. Storage and transport temperature−25
- Max. Storage and transport temperature+70
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 Uimp4.8 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 controls27.6
Rated AC voltage for controls, 50 Hz
- Min. rated AC voltage for controls, 50 Hz-
- Max. rated AC voltage for controls, 50 Hz-
Rated AC voltage for controls, 60 Hz
- Min. rated AC voltage for controls, 60 Hz-
- Max. rated AC voltage for controls, 60 Hz-
Contact resistancemax. 100 mΩ
Power consumption< 5
Type of actuationDC
Switch frequency10
Rated operating voltage Ue24 VDC ±15%
Operating current Ie0,1 A
Electronic protection (Y/N)No
Monitored inputs
- Short-circuit recognition (Y/N)Yes
- Wire breakage detection (Y/N)Yes
- Earth connection detection (Y/N)Yes
Number of shutters1
Number of openers1
Input resistanceapprox. 2000 Ω at GND
Input signal "1"10 … 30 VDC
Input signal "0"0 … 2 VDC
Cable length100 m with 0,75 mm² (for Rated voltage)
Number of safety contacts3
Number of auxiliary contacts0
Number of signalling outputs2
Switching capacity
- Switching capacity of the safety contactsmin. 10 mA, max. 6 A
- Switching capacity of the signaling/diagnostic outputsY1, Y2 = 100 mA
Fuse rating
- Protection of the safety contacts6 A gG D-fuse
- Fuse rating for the signaling/diagnostic outputsshort-circuit proof
Signalling outputY1: Authorized operation, safety contacts on;
Y2: No authorised operation, safety contacts off
Utilisation category To EN 60947-5-1AC-15: 250 V / 2 A
DC-13: 24 V / 2 A
Number of undelayed semi-conductor outputs with signaling function2
Number of undelayed outputs with signaling function (with contact)0
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.0
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´s1
Integral system diagnosis $missingShortName$
Integral system diagnosis ISD
- The following faults are registered by the safety monitoring modules and indicated by ISD
- Failure of the safety relay to pull-in or drop-out
- Fault on the input circuits or the relay control circuits of the safety monitoring module
- Difference in time setting between channel I and channel II
- Cross conclusions to the input lines
- Interruption of the input connections
Miscellaneous data
Applications Fail-safe delay timer
- Width55 mm
- Height75 mm
- Depth110 mm
Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.
notice - Wiring example
To monitor one guard door at plants with dangerous run-on movements up to PL d and Category 3
Monitoring time for unlocking of solenoid interlocks
The solenoid interlock releases the guard device only when the set time has elapsed.
The time begins to run when the power contactors have dropped out.
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.

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 18.02.2019 - 02:56:25h Kasbase 3.3.0.F.64I