• Safety switch with guard locking and integrated evaluation electronics
• Locking force up to 6500 N
• Up to 20 switches in series
• Short circuit monitoring
• 2 safety outputs (semiconductor outputs)
• Up to 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
• Teach-in input
• Approach direction A (default setting on delivery)

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

CET4

Open-circuit current principle guard locking by solenoid force. Activation of the guard locking 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
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: 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	Open-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
ICM	480 mA
IB	80 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.14 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
	Teach-in input
Input voltage
Low	0 ... 1 V DC
High	15 ... 27,6 V DC
	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

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 upward	4.29 x 10-8
Head downward or horizontal	3.1 x 10-9
Mission time	20 y

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