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

CET3-AP-CRA-AH-50X-SI-C2438-124589 (Rend. sz. 124589)

Non-contact safety switch CET-AP-..., for connection to decentralized peripheral systems

  • Safety switch with guard locking and integrated evaluation electronics
  • Locking force up to 6,500 N
  • Connection to decentralized peripheral systems (e.g. ET200pro) via Y-distributor
  • Short circuit monitoring
  • 2 safety outputs (semiconductor outputs)
  • Category 4 / PL e according to EN ISO 13849-1
  • With 2 plug connectors M12
  • Unicode
  • Door monitoring output
  • Indication of the door position by LED
  • Approach direction A (delivery state)
CET3-AP-CRA-AH-50X-SI-C2438-124589 (Rend. sz. 124589)


Approach direction


Can be adjusted in 90° steps

Safety switch

The device may be operated only in conjunction with the actuator CET-A-....

Important: The actuator must be ordered separately.

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.

Solenoid operating voltage

  • DC 24 V +10%, -15%

Guard locking type


Closed-circuit current principle, guard locking by spring force. Release by applying voltage to the guard locking solenoid. The door position is also monitored. The door monitoring output OUT D is set to HIGH as soon as the actuator is above the extended plunger (state: door closed, guard locking not active). The output OUT D also remains set when guard locking is active.

LED function display

State LED

Status LED


Diagnostics LED

LED 1 rd

Voltage at the solenoid

LED 2 gn

illuminates when the door is closed

Additional connections


Door monitoring output

Category according to EN ISO 13849-1

Due to two redundantly designed semiconductor outputs (safety outputs) with internal monitoring suitable for:

  • Category 4 / PL e according to EN ISO 13849-1
  • The stated safety characteristics apply to any installation orientations of the safety switch.

Important: To achieve the stated category in accordance with EN ISO 13849-1, both safety outputs (OA and OB) must be evaluated.

Dimension drawing
Dimension drawing
Block diagram
Block diagram
Wiring drawing
Wiring drawing
CET3-AP: Mounting emergency release safety swith CET3-AP
CET3-AP: Mounting and Setup CET3-AP (closed-circuit current principle)
CET: Transponder-coded safety switch with guard locking
CET3-AP: Mounting auxiliary release with key CET3-AP

Dimension drawings

Dimension drawings

Connection examples

Connection examples

Connection examples

Connection examples

Műszaki adatok


EAC_RU C-DE.MO05.B.00971/20c_UL_us_E155795_3/8DGUV_ET 20018_ET 20019

Work area

Repeat accuracy R
according to EN 60947-5-2 10 %

Electrical connection ratings

Power consumption
Solenoid 11 W
Connecting cable 30V DC, 2A (for UL requirement UL category code (CYJV/CYJV7))
Current consumption
ICM 450 mA
IB 80 mA
external (operating voltage UB) 0.25 ... 8 A
external (solenoid operating voltage UCM) 0.5 ... 8 A
Operating voltage DC
LED 24 V DC -15% V DC ... +10% V DC
UB 24 V DC -15% ... +15% reverse polarity protected, regulated, residual ripple < 5%, PELV
EMC protection requirements according to EN IEC 60947-5-3
Utilization category
DC-13 24V 200mA (Caution: Outputs must be protected with a free-wheeling diode in case of inductive loads)
Solenoid operating voltage DC
UCM 24 V DC -15% ... +10% reverse polarity protected, regulated, residual ripple < 5%, PELV
Solenoid duty cycle 100 %
Switching load
according to UL 24V DC, Class 2 (For alternatives, see operating instructions)
Safety class
EN IEC 61140 III
Test pulses max. 0.3 ms (Applies to a load with C <= 30 nF and R <= 20 kohm)
Degree of contamination (external, according to EN 60947-1) 3
Monitoring output OUT D
Output type p-switching, short circuit-proof
Output voltage
OUT D 0.8xUB ... UB V DC
Switching current
OUT D 1 ... 50 mA
Switching delay from state change max. 700 ms
Safety outputs OA / OB
Output type 2 semiconductor outputs, p-switching, short circuit-proof
Discrepancy time
both safety outputs max. 10 ms
Output voltage
LOW U(OA,OB) 0 ... 1 V DC
Turn-on time 400 ms
Switching current
per safety output OA / OB 1 ... 200 mA
Off-state current Ir max. 0.25 mA
Risk time according to EN 60947-5-3
Single device max. 400 ms

Mechanical values and environment

Approach speed max. 20 m/min
Connection 2 plug connector M12, 5-pin
Degree of protection IP67 (screwed tight plug connector/mating component)
Ready delay 1 s
Ramp stainless steel
Safety switch housing Die-cast aluminum
Mechanical life 2 x 10⁶
Installation orientation any (preferably head downward)
Switching frequency max. 0.5 Hz
Degree of freedom X ±5 mm
Degree of freedom Y ±5 mm
Degree of freedom Z ±4 mm
Shock and vibration resistance according to EN IEC 60947-5-3
Ambient temperature
at UB = 24V DC -20 ... +55 °C
Locking force Fmax 6500 N
Locking force FZh 5000 N
Guard locking principle Closed-circuit current principle

Reliability values acc. to EN ISO 13849-1

Mission time 20 y
Any installation orientation 4
Performance Level PL e
Any installation orientation 3.1 x 10-9


The following applies to the approval according to UL Operation only with UL Class 2 power supply or equivalent measures; see operating instructions



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, 8,2 MB)

Single Documents

Other Documents

Ordering data

Rend. sz. 124589
Articlename CET3-AP-CRA-AH-50X-SI-C2438-124589
Weight 1,24kg
Customsclass 85365019

Műszaki támogatás

Műszaki támogatás
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EUCHNER Magyarország Kft.
+36 1919 0855