Bosch DCN Next Generation Installation & User's Instructions page 185

DCN Next Generation | Installation and User Instructions | Flush-mounted Devices
26.4.2 External contact
You can connect an external contact to the voting panel.
The external contact must be connected to the external
contact plug (refer to figure 26.4 and table 26.4).
Note
The external contact function is only available in
systems that operate with a control PC that has
one or more of these software modules:
• Parliamentary Voting software module
• Multi Voting software module
• Attendance Registration software module
Refer to the applicable Software User Manuals
for the instructions that tell you how to use the
external contact.
figure 26.4: External contact, connection
table 26.4: External contact, connection
Pin
1
2
3
Note
You can connect, for example, an
AMP173977-3 socket to the external contact
plug of the voting panel.
Bosch Security Systems | 2007-02 | 9922 141 70525
1 2 3
Signal
+5 V(DC) (max. 20 mA)
Input, +
Input, -
Use the solder spot (refer to section 26.2, no. 5) to
configure the external contact plug. With the solder
spot, you can configure the galvanic separation of pin 3
and the ground of the external contact plug (refer to
table 26.5).
table 26.5: Solder spot (* = default)
Solder spot Description
Not soldered* Pin 3 and the ground of the
external contact plug are not
internally connected.
Soldered Pin 3 and the ground of the
external plug are internally
connected.
Refer to figure 26.5 for a circuit diagram of an external
contact connection that uses the galvanic separation.
External
+
4-12 V(DC)
_
figure 26.5: External contact, connection (1)
en | 185
On PCB
+5V(DC)
1
2
R
3
X6