9
2098221-06-08/20 (Translation of the original operating instructions)
Operating Instructions
AR Evaluation Unit CES-AR-AES-12
EN
6. Function
The AR evaluation unit is used to evaluate the individual safety switches in an AR switch chain and to reliably interrupt a
safety circuit.
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 AR switch chain is moved out of the actuating range or if guard locking
is deactivated, the AR evaluation unit opens its relay contacts and the corresponding monitoring output is switched off.
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.
6.1. Block diagram CES-AR-AES-12
UB
X5:4
0V
X6:3
switch chain
Monitoring Outputs
Feedback
Loop
13
23
14
24
33
43
34
44
098225
DC 24 V
O1
X3:1
O2
X3:2
0V AR
X8:4
UB AR
X8:3
S
X5:3
DIA
X6:2
IB
X8:2
Y1
X5:1
Y2
X5:2
IA
X8:1
O3
X3:3
O4
X3:4
O5
X7:1
O6
X7:2
O7
X7:3
O8
X7:4
O9
X4:1
O10
X4:2
O11
X4:3
O12
X4:4
OUT AR
X6:1
UB
X6:4
CES- AR
Figure 1:
Block diagram of AR evaluation unit
7. Mounting
CAUTION
Safety switches must not be bypassed (bridging of contacts), turned away, removed or otherwise
rendered ineffective.
Ì
Observe EN ISO 14119:2013, section 7, for information about reducing the possibilities for by-
passing an interlocking device.
Ì
The AR evaluation unit must be mounted in a control cabinet with a minimum degree of protection
of IP54. A snap-in element on the rear of the device is used for fastening to standard rails.
Ì
If several evaluation units are mounted side by side in a control cabinet without air circulation (e.g.
fan), a minimum distance of 10 mm must be maintained between the evaluation units.
This distance enables the heat from the evaluation unit to dissipate.
Important!
Follow the mounting instructions in the accompanying documents for the safety switches connected.
