6
3931178/02/05/D
Doepke
Operating Instructions
Dupline Input/Output Boards DNP 4 and DPN 4
8. General Information
The DNP 4 and DPN 4 input and output boards are components of the Dupline installa-
tion system and permit four switch signals to be input and four loads to be switched via
the Dupline bus. Loads with a voltage of 24 VDC and a maximum current of 50 mA can
be connected to the outputs. Those loads have to be supplied with a DC voltage of 24 V
at the DNP 4 and with the ground potential at the DPN 4.
The output circuitry of the board is equipped with NPN-transistors (DNP 4) or PNP-tran-
sistors (DPN 4) whose open collectors are routed to screw terminals.
9. Coding
With the DHK 1 hand encoder each channel can be assigned any address between A1
and P8 via the Western modular socket on the circuit board. The allocation of the chan-
nels is as follows:
Channels which are not required should remain uncoded. Encoding the boards requires
neither a supply voltage nor the Dupline signal. Although the coding is permanently re-
tained, it may always be overwritten.
As a safeguard in the event of a bus fault, the status of the outputs can be preset in ad-
vance with the DHK 1 hand encoder. The standard setting is "Off".
10. Putting into Service
Installation may only be carried out by an authorized technician. As the circuit boards are
not enclosed, particular care should be taken when mounting and installing them. They
must be installed so that neither moisture nor any other environmental conditions can af-
fect their function. Attention should be paid that sufficient insulation is provided, as well
as enough distance from other live leads and parts. The enclosed spacers should be
used.
The circuit boards have to be operated with 24 VDC at terminals POW (24 VDC) and
BUS- (0 V).
In order to avoid differences in potential, the common (O V) wire of the
voltage supply must be directly connected together with the Dupline signal con-
ductor (Dupline-) to the „BUS-“ terminal.
At no other point is a connection between
the two leads permissible. The input signals (contacts or switches) at terminals I1..I4
should be operated against the OV potential of the supply voltage; they may not be con-
nected directly to the Dupline signal conductor (Dupline-). At the DNP 4, the loads at ter-
minals O1..O4 can be supplied by the internal 24 V voltage by being jointly routed to the
DC+ terminal.
The Dupline signal must be routed to terminals BUS+ () and BUS- (Dupline-). At
Channel
Description
Channel
Description
1
Input 1
5
Output 1
2
Input 2
6
Output 2
3
Input 3
7
Output 3
4
Input 4
8
Output 4
