EUCHNER – More than safety.
EUCHNER – More than safety.

CEM-I2-AY-U-C40-SA-128103 (Order no. 128103)

Transponder-coded safety switch CEM-AY-C40

  • Safety switches with guard locking for process protection and integrated evaluation electronics
  • Solenoid with locking force 600 N
  • Adhesive-force adjustment in 3 levels
  • Short circuit monitoring
  • 2 safety outputs (semiconductor outputs)
  • Up to category 4 / PL e according to EN ISO 13849-1 for door position monitoring
  • With plug connector M12
  • Unicode
  • Door monitoring output
CEM-I2-AY-U-C40-SA-128103 (Order no. 128103)


Unicode evaluation

Each actuator is highly coded (unicode). The switch detects only taught-in actuators. Additional actuators can be taught-in. Only the last actuator taught-in is detected.

Guard locking type


Guard locking actuated by energy ON and released by energy OFF.

Connector assignment

Plug connector (view of connection side)PinDesignationFunction

1IMPControl voltage, guard locking solenoid, 24 V DC
2UBOperating voltage, 24 V DC
3FO1ASafety output, channel 1
4FO1BSafety output, channel 2
5OIDiagnostic output
6OTDoor monitoring output
7OLGuard lock monitoring output
80 V UBOperating voltage, 0 V
Dimension drawing
Dimension drawing
Wiring drawing
Wiring drawing
Transponder-coded safety Switch CEM-C40

Dimension drawings

Dimension drawings
1Active solenoid face
2Active read head face

Connection examples

Connection examples

Technical data


EAC_RU C-DE.MO05.B.00971/20

Work area

Assured release distance sar 18 mm
Center offset
Solenoid -5 ... +5 mm (in all directions)

Electrical connection ratings

Current consumption
I UB, guard locking active 350 mA (Monitoring outputs not loaded)
I UB, guard locking inactive 80 mA (Monitoring outputs not loaded)
Discrepancy time max. 10 ms
external (operating voltage UB) 1 A
Rated insulation voltage Ui 30 V
Operating voltage
DC 24 V -15% ... +15% (PELV)
EMC protection requirements according to EN 60947-5-3
rated conditional short-circuit current 100 A
Rated impulse withstand voltage Uimp 0.5 kV
Risk time according to EN 60947-5-3 max. 260 ms
Safety class III
Turn-on time 700 ... 2500 ms (Max. value, with active guard locking)
Test pulses max. 0.8 ms
Degree of contamination (external, according to EN 60947-1) 3
Output type Semiconductor output, p-switching, short circuit-proof
Output voltage 0.8 x UB ... UB V DC
Switching current
je Meldeausgang max. 50 mA
Output type Semiconductor outputs, p-switching, short circuit-proof
Off-state current Ir max. 0.25 mA
Output voltage
LOW U(FO1A) / U(FO1B) 0 ... 1 V DC
HIGH U(FO1A) / U(FO1B) UB - 1.5 ... UB V DC
Switching current
je Ausgang 1 ... 150 mA
Utilization category
DC-13 DC-13 24V 150mA (Vorsicht: Ausgänge müssen bei induktiven Lasten mit einer Freilaufdiode geschützt werden)

Mechanical values and environment

Adhesive force
adjustable 0. ca. 30. ca. 50 N
Ambient temperature -20 ... +55 °C
Connection Plug connector M12, 8-pin
Degree of protection IP65/IP67 (screwed tight with the corresponding mating connector)
Installation orientation any
Locking force Fmax
in axial direction 600 N (The device signals if the locking force drops below 400N.)
Read head Plastic (PBT)
Solenoid Steel, nickel plated
Housing Aluminum
Mechanical life
in case of use as door stop, and 1 Joule impact energy 1 x 10⁶
Ready delay 12 s
Tightening torque
Fixing screws 4 Nm
Shock and vibration resistance according to EN 60947-5-3

Reliability values according to EN ISO 13849-1

Mission time 20 y
Monitoring of the guard position
Category 4
Performance Level PL e
PFHD 4.5 x 10-9



Complete package

Download all important documents with a single click.


  • The operating instructions and any additions to the operating instructions or brief instructions
  • Any data sheets to supplement the operating instructions
  • The declaration of conformity
Download Complete Package (ZIP, 4,8 MB)

Single Documents

Other Documents

Doc. no.
Systèmes de sécurité à codage par transpondeur CEM avec verrouillage pour la protection du process
Doc. no.
3,8 MB
Doc. no.
Sistemas de seguridad codificados por transponder CEM con bloqueo para la protección de procesos
Doc. no.
2,1 MB
Doc. no.
Sistemi di sicurezza con codifica a transponder CEM con meccanismo di ritenuta per la protezione del processo
Doc. no.
9,0 MB

Ordering data

Ordernumber 128103
Item designation CEM-I2-AY-U-C40-SA-128103
Gross weight 0,751kg
Customs tariff number 85365019

Technical support

Technical support
Do you have technical questions about our products, their possible use or applications? Our experts will be happy to help.

+44 114 2560123

+1 315 701-0315