18
Connector Unit MA 30 / MA 31
Leuze electronic
Connection
Leuze
electronic
3.3
Connecting the switching inputs
Connection terminals: 7 … 12
Switching inputs
1 and 2
The MA 30/31 has two galvanically separated switching inputs SE1/SE2.
These are active as soon as a scanner is operated on the
MA 30
.
On the
MA 31
this function is available only via a special software command!
Each switching input is supplied with bidirectional optical couplers and pro-
tective resistors.
The switching voltage and GND can be externally applied or taken from the
operating voltage VDD_SE and GND_SE.
Figure 3.7: Connection of the switching input with an external switching voltage
Figure 3.8: Connection of the switching input without an external switching voltage
Input voltage:
12 … 36VDC /AC.
Insulation voltage:
500V
VIN
GND
24V_SE
GND_SE
SE1/2_A
SE1/2_B
U
Supply voltage
MA 30/BCL xx
18 … 36V
MA 30
Ex
te
rn
a
l
s
witch
in
g
vo
lta
g
e
to processor
Optically coupled switching input
VIN
GND
24V_SE
GND_SE
SE1/2_A
SE1/2_B
Supply voltage
MA 30/BCL xx
18 … 36V
MA 30
S
ens
or/
op
tical se
nso
r
to processor
Optically coupled switching input