AES 1185.3 24 VAC

Item number: 101131929


TraceParts CAD Data
ePLAN Data
Product type description:
AES 1185(1)

without24 VDC
.324 VAC
Not all component variants, which are possible according to this order code are available and/or technically feasible.
  • Monitoring of BNS range magnetic safety sensors
  • 1 safety contact, STOP 0

Ordering data

Note (Delivery capacity)

Phased-out product

Product type description

AES 1185.3 24 VAC

Article number (order number)


EAN (European Article Number)


eCl@ss number, version 12.0


eCl@ss number, version 11.0


eCl@ss number, version 9.0


ETIM number, version 7.0


ETIM number, version 6.0


Available until


Approvals - Standards



General data




EN IEC 62061

EN ISO 13849-1

EN IEC 60947-5-1

EN IEC 60947-5-3

EN IEC 60947-5-5

EN IEC 60204-1

EN IEC 60947-1

Climatic stress


IEC 60947-5-3

Enclosure material

Glass-fibre, reinforced thermoplastic

Material of the contacts, electrical

Ag-Ni, Au

Gross weight

150 g

General data - Features



Wire breakage detection


Cross-circuit detection


Feedback circuit


Automatic reset function


Reset after disconnection of supply voltage


Earth connection detection


Integral system diagnostics, status


Number of inputs for NC


Number of inputs for NO


Number of LEDs


Number of normally closed (NC)


Number of normally open (NO)


Number of safety contacts


Safety classification


EN ISO 13849-1

EN IEC 61508

Safety classification - Relay outputs

Performance Level, up to




PFH value

1.00 x 10⁻⁷ /h


for max. 50,000 switching cycles/year and max. 80% contact load

Safety Integrity Level (SIL), suitable for applications in


Mission time

20 Year(s)

Mechanical data

Mechanical life, minimum

50,000,000 Operations


Snaps onto standard DIN rail to EN 60715

Mechanical data - Connection technique


rigid or flexible

Screw terminals M20 x 1.5

Terminal designations

IEC/EN 60947-1

Cable section, maximum

2.5 mm²

Tightening torque of Clips

0.6 Nm

Mechanical data - Dimensions


22.5 mm


75 mm


110 mm

Ambient conditions

Degree of protection of the enclosure


Degree of protection of the mounting space


Degree of protection of clips or terminals


Ambient temperature, minimum

+0 °C

Ambient temperature, maximum

+55 °C

Storage and transport temperature, minimum

-25 °C

Storage and transport temperature, maximum

+70 °C

Resistance to vibrations

10...55 Hz, Amplitude 0.35 mm, ± 15 %

Restistance to shock

30 g / 11 ms

Storage and transport temperature

-25 ... +70 °C

Ambient conditions - Insulation values

Rated impulse withstand voltage Uimp

4 kV

Overvoltage category


Degree of pollution


Electrical data

Frequency range

50 Hz

60 Hz

Operating voltage

24 VAC -15 % / +10 %

Ripple voltage

10 %

Thermal test current

4 A

Rated operating voltage

24 VAC

Rated AC voltage for controls, 50 Hz, minimum

20.4 VAC

Rated control voltage at AC 50 Hz, maximum

26.4 VAC

Rated AC voltage for controls, 60 Hz, minimum

20.4 VAC

Rated control voltage at AC 60 Hz, maximum

26.4 VAC

Rated AC voltage for controls at DC minimum

20.4 VDC

Rated control voltage at DC, maximum

28.8 VDC

Electrical power consumption

5 W

Contact resistance, maximum

0.1 Ω

Note (Contact resistance)

in new state

Drop-out delay in case of power failure, typically

80 ms

Drop-out delay in case of emergency, typically

20 ms

Pull-in delay at automatic start, maximum, typically

100 ms

Pull-in delay at RESET, typically

20 ms

Electrical data - Safe relay outputs

Voltage, Utilisation category AC-15

230 VAC

Current, Utilisation category AC-15

6 A

Voltage, Utilisation category DC-13

24 VDC

Current, Utilisation category DC-13

6 A

Switching capacity, minimum

10 VDC

Switching capacity, minimum

10 mA

Switching capacity, maximum

250 VAC

Switching capacity, maximum

8 A

Electrical data - Digital inputs

Input signal, HIGH Signal "1"

12 … 30 VDC

Input signal, LOW Signal "0"

0 … 2 VDC

Conduction resistance, maximum

40 Ω

Electrical data - Digital Output

Voltage, Utilisation category DC-12

24 VDC

Current, Utilisation category DC-12

0.1 A

Electrical data - Relay outputs (auxiliary contacts)

Switching capacity, maximum

24 VDC

Switching capacity, maximum

2 A

Electrical data - Electromagnetic compatibility (EMC)

EMC rating


Integral system diagnosis (ISD)

Note (ISD -Faults)

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

Failure of door contacts to open or close

Cross-wire or short-circuit monitoring of the switch connections

Interruption of the switch connections

Fault on the input circuits or the relay control circuits of the safety monitoring module

Other data

Note (applications)

Safety sensor

Guard system


Note (General)

Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.

Wiring example

Note (Wiring diagram)

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.

Expansion of enable delay time: The enable delay time can be increased from 0.1 s to 1 s by changing the position of a jumper link connection under the cover of the unit.

To secure 3 guard doors up to PL d and Category 3

Monitoring 3 guard door(s), each with a magnetic safety sensor of the BNS range

The feedback circuit monitors the position of the contactors K3 and K4.

Start push button: A start push button (NO) can optionally be connected into the feedback circuit. With the guard door closed, the enabling paths are then not closed until the start push button has been operated.

If neither start button nor feedback circuit are connected, a jumper connection must be mounted between X1 and S13.

If only one external relay or contactor is used to switch the load, the system can be classified in Control Category 3 to ISO 13849-1, if exclusion of the fault “Failure of the external contactor” can be substantiated and is documented, e.g. by using a reliable down-rated contactor. A second contactor leads to an increase in the level of security by redundant switching to switch the load off.

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103008070 SRB-E-204PE
  • Plug-in screw terminals with coding
  • Input expander module
  • 1 oder 2-channel control
  • Monitoring of 4 sensors
  • 2 Safety outputs
  • 4 Signalling outputs

103009973 SRB-E-204ST
  • Plug-in screw terminals with coding
  • STOP 0 Function
  • Monitoring of 4 sensors
  • Start button / Auto-start
  • 2 Safety outputs
  • 4 Signalling outputs

Schmersal Ltd., Sparrowhawk Close, WR14 1GL Malvern

The details and data referred to have been carefully checked. Images may diverge from original. Further technical data can be found in the manual. Technical amendments and errors possible.

Generated on: 31/01/2023, 06:45