4
Operating instructions
Safety-monitoring module
AES 3075
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 diagram is shown with guard doors closed and in a de-
energised condition. Inductive loads (e.g. contactors, relays, etc.) are
to be provided with suitable interference suppression circuitry. Do not
connect additional loads to terminal S..
AES 3075
X3
A2
S22
S21
S14
A1
S1
S2
S4
S3
X4
K3
S13
S14
S21
S22
X1
X2
S22
S21
S22
S13
K4
3
Y5
S13
S13
S14
S14
S21
+24 VDC
0 V
0V
M
Y1
Y2
S
Y14
Y3
Y24
Y4
S1
S2
S3
S4
max.
H6
Monitoring of four safety guards (cascading) by means of a
magnetic safety sensor of the BNS series
If less than 4 switches are connected, the unused terminals S21/S22
must be bridged before a NC contact is connected. This applies to the
position of the jumpers in the safety-monitoring module with NC/NO
configuration. The feedback circuit monitors the position of the positive-
guided NC contacts of the contactors K3 and K4. A start pushbutton
(NO) can be optionally integrated in the feedback circuit. With the guard
door closed, the enabling paths are then not closed until the start push
button has been operated.
Key
A - D
S
Non-contact safety sensor
H
Start button
W
Pushbutton: enabling signal on/off
