Troubleshooting, Euchner, Led indicators – EUCHNER CES-AR-AES-12 User Manual
Page 16: Reset button, Ces-ar-aes-12, Safety unit
Operating Instructions AR Evaluation Unit CES-AR-AES-12
16
Status LEDs, control elements and terminal assignment
The AR evaluation unit has status LEDs for the most important operating states.
The significance of the individual LED states is explained in the System Status table
in the section Troubleshooting.
Fig. 1: Terminal assignment, LEDs and reset button
LED indicators
LED
Color
Significance
STATE
green
Device status
OUT
yellow
Switch chain status
DIA
red
Fault display
Reset button
With the reset button pressed, the power supply for the AR evaluation unit and as
a result for the entire AR switch chain is interrupted. After it is released, the AR
evaluation unit and the switches connected restart with a self-test.
Troubleshooting
O4
O12
O3
O11
O2
O10
O1
O9
+UB
+UB
0V
S
DIA
Y2
Y1
43
44
33
34
23
24
13
14
CES-AR-AES-12
EUCHNER
Safety Unit
O5
IA
O6
IB
O7
RESET
DIA OUT STATE
O8
OUT
AR
UB
AR
0V
AR
O4
O12
O3
O11
O2
O10
O1
O9
+UB
+UB
0V
S
DIA
Y2
Y1
43
44
33
34
23
24
13
14
CES-AR
EUCHNER
Safety Unit
O5
IA
O6
IB
O7
RESET
DIA OUT STATE
O8
0V
AR
UB
AR
OUT
AR