• Central evaluation of an AR switch chain
• Status of each individual switch can be seen
• For switch chains of up to 12 devices
• Four individual safe relay contacts
• Category 4/PLe according to EN ISO 13849-1

Important: A switch chain comprising the following switches can be connected to the AR evaluation unit: CES-AR-C01 / CES-AR-C02 / CES AR-C04 / ESL-AR / CET- AR / CTP-AR FunctionThe AR evaluation unit is used to evaluate the individual safety switches in a CES-AR-... switch chain and the safe interruption of a safety circuit. The unit has two inputs for connection of a CES-AR... switch chain. The safety contacts are switched as a function of the input signals. Downstream parts of the safety circuit can be monitored using a feedback loop. The switching states of the connected safety switches can be signaled by means of monitoring outputs. If the actuator on one of the safety switches in the switch chain is moved out of the operating distance, the AR evaluation unit opens its contacts and the corresponding monitoring output is reset. The system is designed so that failures will not result in the loss of the safety function. The occurrence of failures is detected by cyclic self-monitoring at the latest at the next demand to close the safety contacts. The system can be started either manually using a start button or automatically. Category according to EN ISO 13849-1Due to two redundant safety paths (relay contacts) with 2 internal, monitored normally open contacts per safety path, suitable for:

• Category 4/PL e according to EN ISO 13849-1

Each safety path is independently safe. LED indicator

STATE	Status LED
DIA	Diagnostics LED
OUT	Safe state/self-test

Important:The plug-in connection terminals are not included and must be ordered separately. Dimension drawing Wiring diagram Wiring diagram Dimension drawingWiring diagramWiring diagram Technical dataApprovals Mechanical values and environment

Dimensions	114 x 99 x 45
Housing material	Plastic PA6.6
Weight
Net	0,25 kg
Ambient temperature
At UB = DC 24 V	-20 ... 55 °C
Atmospheric humidity
Not condensing	max.80 % rH
Degree of protection	IP20
Resilience to vibration	In acc. with EN 60947-5-2
Mounting method	Mounting rail 35 mm according to EN 60715
Ready delay	max.8 s
Connection	Plug-in screw terminals coded
Number of LED displays	3
	O1 ... O12
Number of monitoring outputs	12
	Start button S
Manual start operating mode
Response delay start button	300 ... 600 ms
Duration of operation of start button	min.250 ms
	13/14, 23/24, 33/34, 43/44
Number of safety contacts	4 Relays with internally monitored contacts
Mechanical life
Relay	10 x 106
Switching frequency	1 Hz 100 mA, a switching frequency of 0.1 Hz should not be exceeded as this will affect the mechanical life of the relay contacts.'>

Electrical connection ratings

Operating voltage DC
UB	24 V DC -10% ... 10% Regulated, residual ripple < 5 %
Current consumption
IB (with relay energized)	1200 mA
Fusing
External (operating voltage UB)	2,5 ... 8 A
Rated insulation voltage Ui	250 V
Rated impulse withstand voltage Uimp	4 kV
EMC protection requirements	In acc. with EN 60947-5-3
Degree of contamination (external, according to EN 60947-1)	2
Connection cross-section	0,14 ... 2,5 mm?
Switching delay from state change	max.480 ms
	STATE
LED indicator
STATE	Green LED: Status of the device
	OUT
LED indicator
OUT	Yellow LED: State of the AR chain
	IA, IB
Number of connectible safety switches	max.12
Safety inputs	2 (for CES-AR switch chain)
	13/14, 23/24, 33/34, 43/44
Switching current
Relay outputs (at switching voltage AC 5 ... 230 V)	10 ... 5000 mA
Relay outputs (at switching voltage AC/DC 21 ... 60 V	1 ... 300 mA
Relay outputs (at switching voltage AC/DC 5 ... 30 V)	10 ... 6000 mA
Fusing
External (safety circuit) according to EN 60269-1	6 AgG or 6 A circuit breaker (characteristic B or C)
Utilization category according to EN 60947-5-1
AC-15	230 V 5 A
DC-13	24 V 5 A
AC-12	60 V 0.3 A
	30 V 6 A
DC-12	30 V 6 A
	60 V 0.3 A
Discrepancy time
Between the operating points of both relays	max.25 ms
	Start button S
Input current
HIGH	5 ... 8 ... 10 mA
Input voltage
HIGH	15 ... UB V DC
LOW	0 ... 2 V DC
	Y1/Y2
Current via feedback loop	5 ... 8 ... 10 mA
permissible resistance in feedback loop	max.600 ?
	DIA
LED indicator
DIA	Red LED: Fault display
Type of output	Semiconductor output, p-switching, short circuit-proof
Output voltage
HIGH	UB - 20% ... UB V DC
LOW	0 ... 1 V DC
Output current	max.20 mA
	O1 ... O12
Type of output	Semiconductor outputs, p-switching, short circuit-proof
Output voltage
LOW	0 ... 1 V DC
High	UB - 20% ... UB V DC
Output current	max.20 mA
	OUT AR
Type of output	Semiconductor output, p-switching, short circuit-proof
Output voltage
HIGH	UB - 20 % ... UB V DC
LOW	0 ... 1 V DC
Output current	max.20 mA

Reliability values according to EN ISO 13849-1

	Monitoring of the safety guard position
Category	4
Performance Level	PL e
PFHD	1.5 x 10-8
Number of switching cycles
? 3 A at 24 V DC	max.107000 1/Jahr
? 1 A at 24 V DC	max.540000 1/Jahr
? 0.1 A at 24 V DC	max.720000 1/Jahr
Mission time	20 y

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