Approach direction
Horizontal
Can be adjusted in 90° steps
Safety switchThe device may be operated only in conjunction with the actuator CET-A-….
Important: The actuator must be ordered separately.
Each actuator is unique. 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
| CET3 | 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 remains set also with guard locking active. |
LED function display
| LED State | Status LED |
| LED DIA | Diagnostic LED |
| LED 1 rd | freely configurable |
| LED 2 gn | illuminates when door is closed |
Additional connections
| OUT | Monitoring output (semiconductor) |
| OUT D | Door monitoring output (semiconductor) |
| RST | Reset input |
| J | Teach-in input |
Category according to EN ISO 13849-1Due to two redundantly designed semiconductor outputs (safety outputs) with internal monitoring suitable for:
- Category 4/PL e according to EN ISO 13849-1
Important: To achieve the stated category in accordance with EN ISO 13849-1, both safety outputs (OA and OB) must be evaluated.
The category is dependent on the installation position of the safety switch:
Escape releaseThis is used for manual release of guard locking from the danger zone without tools.
Dimension drawing
Block diagram
CET: Transponder-coded safety switch with guard locking
Dimension drawingBlock diagram
Technical dataApprovals
Mechanical values and environment
| Housing material | |
| Slide | Stainless steel |
| Safety switch housing | Die-cast aluminum |
| Weight | |
| Net | 1 kg |
| Ambient temperature | |
| At UB = 24V DC | -20 … 55 °C |
| Degree of protection | IP67 |
| Resilience to vibration | In acc. with EN IEC 60947-5-2 |
| Mechanical life | 1 x 106 |
| Installation orientation | Any |
| Degree of freedom | |
| Z | ±4 mm |
| Y | ±5 mm |
| X | ±5 mm |
| Ready delay | 10 s |
| Switching frequency | max.0,5 Hz |
| Connection | 2 plug connectors M12, 5 and 8-pin |
| Approach speed | 20 m/min |
| Guard locking principle | Closed-circuit current principle |
| Locking force Fmax | 6500 N |
| Locking force FZh | 5000 N |
Electrical connection ratings
| Operating voltage DC | |
| UB | 24 V DC -15% … 15% Reverse polarity protected, regulated, residual ripple < 5%, PELV |
| LED | 24 V DC -15% … 10% |
| Current consumption | |
| IB | 80 mA |
| ICM | 480 mA |
| Utilization category according to EN 60947-5-2 | |
| DC-13 | 24V 200mA |
| Solenoid operating voltage DC | |
| UCM | 24 V DC -15% … +10% Reverse polarity protected, regulated, residual ripple < 5%, PELV |
| Fusing | |
| External (solenoid operating voltage UCM) | 0,5 … 8 A |
| External (operating voltage UB) | 0,25 … 8 A |
| Power consumption | |
| Solenoid | max.12 W |
| EMC protection requirements | In acc. with EN IEC 60947-5-3 |
| Solenoid duty cycle | 100 % |
| Degree of contamination (external, according to EN 60947-1) | 3 |
| Connecting cable | 30V DC, 2A |
| Safety class | |
| EN IEC 61140 | III |
| Switching load | |
| According to UL | 24V DC, class 2 |
| Safety outputs OA/OB | |
| Type of output | 2 semiconductor outputs, p-switching, short circuit-proof |
| Switching current | |
| Per safety output OA / OB | 1 … 200 mA |
| Output voltage | |
| High U(OA) / U(OB) | UB-1,5V … UB V DC |
| Low U(OA) / U(OB) | 0 … 1 V DC |
| Off-state current Ir | max.0,25 mA |
| Risk time according to EN 60947-5-3 | |
| Delay per device | 5 ms |
| Single device | max.400 ms |
| Switch-on time | 400 ms |
| Discrepancy time | |
| Both safety outputs | max.10 ms |
| Monitoring output OUT | |
| Type of output | p-switching, short circuit-proof |
| Switching current | |
| OUT | 1 … 50 mA |
| Output voltage | |
| OUT | 0,8xUB … UB V DC |
| Switching delay from state change | max.400 ms |
| Monitoring output OUT D | |
| Type of output | p-switching, short circuit-proof |
| Switching current | |
| OUT D | 1 … 50 mA |
| Output voltage | |
| OUT D | 0,8xUB … UB V DC |
| Switching delay from state change | max.700 ms |
| Teach-in input | |
| Input voltage | |
| High | 15 … 27,6 V DC |
| Low | 0 … 1 V DC |
Work area
| Repeat accuracy R | 10 % |
Other
| For the approval according to UL the following applies | Operation only with UL class 2 power supply, or equivalent measures see operating instructions |
Reliability values according to EN ISO 13849-1
| Monitoring of guard locking and the safety guard position | |
| Category | |
| Head upward | 3 |
| Head downward or horizontal | 4 |
| Performance Level | PL e |
| PFHD | |
| Head downward or horizontal | 3.1 x 10-9 |
| Head upward | 4.29 x 10-8 |
| Control of the guard locking | |
| Category | Depending on external control of guard locking |
| Performance Level | Depending on external control of guard locking |
| PFHD | Depending on external control of guard locking |
| Mission time | 20 y |
