4
Operating instructions
Safety-monitoring module
AES 1135 / 1136
AES 1145 / 1146
EN
8. Appendix
8.1 Wiring examples
The application examples shown are suggestions. They however do not
release the user from carefully checking whether the switchgear and its
set-up are suitable for the individual application.
The wiring example refers to a closed safety guard and a voltage-free
state. Inductive loads (e.g. contactors, relays, etc.) are to be provided
with suitable interference suppression circuitry. Do not connect ad-
ditional loads to terminal S..
AES 1135/1136
L1
A1
100mA
S13
K1
K3
14
A2
max.
Y1
Y2
X1
K4
3
K2
S14
S21
S22
13
+24 VDC
0 V
N
M
A1
A2
A
A
AES 1145/1146
A
AES 1145/1146
AES 1135/1136
L1
A1
100mA
S13
K1
K3
14
A2
max.
Y1
Y2
X1
K4
3
K2
S14
S21
S22
13
+24 VDC
0 V
N
M
A1
A2
Legend
A
Positive break
A
S
Non-contact safety sensor
A
Safety switch
8.2 Integral System Diagnostics (ISD)
The safety monitoring modules LED display to show the different
switching conditions and faults. The following tables show the different
switching conditions.
Tables switching condition indication
Diagnostic LED
System condition
The LED is green.
Enabling paths closed
LED flashes yellow
(0.5 Hz)
Enabling paths open
LED flashes yellow
(2 Hz)
Safety guard closed, however no release;
possible causes: incorrect operation (only
one contact actuated upon opening) or
voltage drop → perform start-up test
In case of error messages, the LED lights orange intermittently. During
these intermissions, the LED flashes one up to seven times with short
pulses.
Table error indications
Indication (orange)
LED
Error
Cause
1 impulse
Inputs S1
Defective supply
voltage lead, defective
switch, erroneous
fitting of the switch;
switch only partially ac-
tuated* for at least 5 s
4 impulses
Interference signals
at the inputs (no
safe evaluation as-
sured)
Too high capacitive or
inductive interference
at the switch's cables
or the supply voltage
lead
5 impulses
One or both relays
did not close within
the monitoring time
Too low operating
voltage U
e
;
defective relay
6 impulses
Relay not disabled
upon the actuation
of the switch
May be due to contact
welding
7 impulses
Dynamic monitoring
of both channels
(cross-monitoring)
failure
Fault in one channel;
internal data transmis-
sion interrupted
* Partial actuation: position of the switch, in which only one contact was actuated.
Deleting the error message
The fault message is deleted once the fault has been rectified and after
the connected switch has been actuated to check the various functions.
