No.
Circuit
board
Explanation
1
Out
Brownout detection: Open collector, connected to
GND if supply voltage is sufficient.
This output activates if the supply voltage at V
IN
falls
below 10.0 V
DC
(±0.5 V
DC
). The earth connection is
usually connected to the AUX relay's coil. If the sup-
ply voltage falls at V
IN
, the AUX relay activates before
the other relay contacts activate unchecked due to
the decreasing voltage. When the supply voltage is
applied, the output does not activate until the mod-
ule has fully initialised and relay contacts can no
longer switch unchecked.
2
I-
Isolated digital input. Currently not in use.
3
I+
Isolated digital input. Currently not in use.
4
B
Controller connection: Data Line B; connected to
contact for Reader 3.
5
A
Controller connection: Data Line A; connected to
contact for Reader 3.
6
C
Controller connection: Earth; connected to contact
for Reader 3.
7
4a
Relay 4: Potential-free contact (NC treated as NO in
software); activated depending on authorisations.
8
4b
Relay 4: Potential-free contact (NC treated as NO in
software); activated depending on authorisations.
9
3a
Relay 3: Potential-free contact (NC treated as NO in
software); activated depending on authorisations.
10
3b
Relay 3: Potential-free contact (NC treated as NO in
software); activated depending on authorisations.
MOD.SOM8
7. Connections
30 / 140
EN
