AES 1236

Item number: 101170050


TraceParts CAD Data
ePLAN Data
Product type description:
AES 123(1)

55without start-up test
6with start-up test
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
  • 2 safety contacts, STOP 0
  • 2 Signalling outputs

Ordering data

Note (Delivery capacity)

Phased-out product

Product type description

AES 1236

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

EN 60068-2-3


Housing material

Glass-fibre reinforced thermoplastic, ventilated

Gross weight

228 g

General data - Features

Wire breakage detection


Cross-circuit detection


Feedback circuit


Automatic reset function


Start-up test


Earth connection detection


Integral system diagnostics, status


Number of LEDs


Number of normally closed (NC)


Number of normally open (NO)


Number of undelayed semi-conductor outputs with signaling function


Number of safety contacts


Number of signalling outputs


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

20,000,000 Operations


Snaps onto standard DIN rail to EN 60715

Mechanical data - Connection technique

Terminal designations

IEC/EN 60947-1


rigid or flexible

Screw terminals M20 x 1.5

Cable section, minimum

0.25 mm²

Cable section, maximum

2.5 mm²

Tightening torque of Clips

0.6 Nm

Mechanical data - Dimensions


22.5 mm


100 mm


121 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

+0 ... +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

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 %
24 VDC -10 % / +20 %

Ripple voltage

10 %

Thermal test current

6 A

Rated operating voltage

24 VAC

Rated operating voltage

24 VDC

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

Material of the contacts, electrical

Ag-Ni 10 and 0.2 µm gold-plated

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"

10 … 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.

To secure a guard door up to PL d and Category 3

Monitoring 1 guard door(s), each with a magnetic safety sensor of the BNS range

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.

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 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.

If neither start button nor feedback circuit are connected, a jumper connection must be mounted between X1 and A1.

Modification for 2 NC contacts: The safety monitoring module can be modified to monitor two NC contacts by bridging the terminals A1 and X2. In this configuration, the short-circuit detection becomes inoperative.

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Operating instructions and Declaration of conformity


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103009970 SRB-E-201LC
  • Plug-in screw terminals with coding
  • STOP 0 Function
  • 1 oder 2-channel control
  • Start button / Auto-start
  • 2 Safety outputs 2 A
  • 1 Signalling output

103007672 SRB-E-301ST
  • Plug-in screw terminals with coding
  • STOP 0 Function
  • 1 oder 2-channel control
  • Start button / Auto-start
  • 1 Auxiliary contact
  • 3 safety contacts

EU Conformity Declaration
EU Declaration of Conformity LOG_COM_lo1de01s

K.A. Schmersal GmbH & Co. KG
Möddinghofe 30
42279 Wuppertal
Declaration:We hereby certify that the hereafter described components both in their basic design and construction conform to the applicable European Directives.
Name of the component:AES 1135/1136
AES 1165/1165-2250
AES 1235/1236
AES 1265/1265-2250
AES 2135
AES 2335/2365
AES 2535
Type:See ordering code
Description of the component:Safety-monitoring module
Relevant Directives:Machinery Directive2006/42/EC
Applied standards:DIN EN 60947-5-1:2018
DIN EN ISO 13849-1:2016
DIN EN ISO 13849-2:2013
Notified body, which approved the full quality assurance system, referred to in Appendix X, 2006/42/EC:TÜV Rheinland Industrie Service GmbH
Am Grauen Stein, 51105 Köln
ID n°: 0035
Person authorised for the compilation of the technical documentation:Oliver Wacker
Möddinghofe 30
42279 Wuppertal
Place and date of issue:Wuppertal, January 31, 2024
 Authorised signature
Philip Schmersal
Managing Director

Schmersal India Pvt. Ltd., Plot No - G-7/1, Ranjangaon MIDC, Tal. - Shirur, Dist.- Pune 412 220

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: 27/02/2024, 9:24 pm