• Safety switch with guard locking and integrated evaluation electronics
• Locking force up to 6500 N
• Up to category 4/PL e according to EN ISO 13849-1
• Unicode
• Approach direction B (default setting on delivery)

Approach direction Horizontal Can be adjusted in 90° steps Guard locking type

CET4	Open-circuit current principle guard locking by control of AS-i output 0. Release by spring force.

Control of the guard locking solenoidThe guard locking solenoid is controlled by the control system via ASInterface bus bit D0. AS-Interface inputs

D0, D1	Door monitoring
D2, D3	Guard lock monitoring

Evaluation is performed via a safety monitor. AS-Interface outputs

D0	Guard locking
D1	Red LED
D2	Green LED

LED function display

• The ASI LED indicates the operating voltage on the bus.
• The State LED indicates if a fault has been detected on the AS-Interface bus.
• The green and the red LEDs can be controlled as required by the control system via the bus using bits D1 and D2.

Dimension drawing Wiring diagram Block diagram CET: Transponder-coded safety switch with guard locking Dimension drawingWiring diagramBlock diagram Technical dataApprovals Mechanical values and environment

Housing material
Safety switch housing	Die-cast aluminum
Slide	Stainless steel
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
X	±5 mm
Y	±5 mm
Z	±4 mm
Switching frequency	max.0,5 Hz
Connection
1x	Plug connector M12
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

ASi address	0
ASi voltage	30 V 22,5 ... 31,6 V
ASi operating current	50 mA
ASi auxiliary voltage
IEC 60742, PELV	24 V -15% ... +10%
ASi auxiliary current	480 mA
Degree of contamination (external, according to EN 60947-1)	3
ASi slave type
According to ASI specification 2.1	EA code: 7
	ID code: B
ASi data in
According to As-i Safety at Work	D0
	D1
	D2
	D3
ASi data out
Guard locking solenoid	D0
LED red	D1
LED green	D2
ASi LED
LED green	Power
LED red	Fault
Safety class
EN IEC 61140	III

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

Performance Level	PL e
Category
Head downward or horizontal	4
Head upward	3
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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