Euchner CES-AR-AES-12, CESARAES12 Safety Unit DIN Rail 4x Safety Relays

Description

Euchner CES-AR-AES-12, CESARAES12  Safety Unit DIN Rail 4x Safety Relays
Excellent used condition, pulled from working environment.
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Manufacturers page: euchner-usa.com/en-us/a/098225/
Important:
A switch chain comprising the following safety switches can be connected to the AR evaluation unit:
CES-AR-C01 / CES-AR-C02 / CES AR-C04 / ESL-AR / CET- AR / CTP-AR
Function
The 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 actuating range, 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 13849-1
Due 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
Diagnostic LED
OUT
Safe state/self-test
Important:
The plug-in connection terminals are not included and must be ordered separately.
AR evaluation unit CES-AR-AES-12
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
Mechanical values and environment
Shock and vibration resistance
In acc. with EN 60947-5-3
Dimensions
114 x 99 x 45
Housing material
Housing
Plastic PA6.6
Weight
Net
0,25 kg
Ambient temperature
At U
B
= DC 24 V
-20 ... 55 °C
Atmospheric humidity
Not condensing
max.80 % rH
Degree of protection
IP20
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
13/14, 23/24, 33/34, 43/44
Number of safety contacts
4 Relays with internally monitored contacts
Mechanical life
Relay
10 x 10
6
Switching frequency
1 Hz
Electrical connection ratings
Operating voltage DC
U
B
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 U
i
250 V
Rated impulse withstand voltage U
imp
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 mm²
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
DIA
LED indicator
DIA
Red LED: Fault display
Type of output
Semiconductor output, p-switching, short circuit-proof
Output voltage
LOW
0 ... 1 V DC
HIGH
UB - 20% ... UB V DC
Output current
max.20 mA
O1 ... O12
Type of output
Semiconductor outputs, p-switching, short circuit-proof
Output voltage
High
UB - 20% ... UB V DC
LOW
0 ... 1 V DC
Output current
max.20 mA
OUT AR
Type of output
Semiconductor output, p-switching, short circuit-proof
Output voltage
LOW
0 ... 1 V DC
HIGH
UB - 20 % ... UB V DC
Output current
max.20 mA
Start button S
Response delay
Start button
300 ... 600 ms
Actuating duration
Start button
min.250 ms
Input current
HIGH
5 ... 8 ... 10 mA
Input voltage
LOW
0 ... 2 V DC
HIGH
15 ... UB V DC
Y1/Y2
Current via feedback loop
5 ... 8 ... 10 mA
permissible resistance in feedback loop
max.600 Ω
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/DC 21 ... 60 V
1 ... 300 mA
Relay outputs (at switching voltage AC/DC 5 ... 30 V)
10 ... 6000 mA
Relay outputs (at switching voltage AC 5 ... 230 V)
10 ... 5000 mA
Fusing
External (safety circuit) according to EN 60269-1
6 AgG or 6 A circuit breaker (characteristic B or C)
Utilization category acc. 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
60 V 0.3 A
30 V 6 A
Discrepancy time
Between the operating points of both relays
max.25 ms
Reliability values according to EN ISO 13849-1
Monitoring of the safety guard position
Category
4
Performance Level
PL e
PFH
D
1.5 x 10
-8
Number of switching cycles
≤ 0.1 A at 24 V DC
max.720000 1/Jahr
≤ 1 A at 24 V DC
max.540000 1/Jahr
≤ 3 A at 24 V DC
max.107000 1/Jahr
Mission time
20 y