ACD320 user manual Appendix
- 147-
Appendix 4 Example for one driving two constant pressure water supply controlling card
and water supply mode that one for use and one for supplement
（
one driving two circularly
running
）
ACD320 general-purpose can achieve one driving two mode and two pump supply water
circularly at constant pressure after installed the D28WS water supply control card.Also can
realize water supply that one for use and one for supplement at constant pressure, which bring
convenience and reduce the cost.
Name Type
One driving two constant pressure water
supply control card
D28WS
2． Size and installation
The installation method:(1) Please install when the converter is completely power off;
(2)Please install the PC isolated columns on the control board and install the insulating trip.
(3)Well connect one driving two constant pressure water supply controlling card and expansion
card interface of control board, while the PC isolation column is installed on the water supply
control card;
Fig. 9-1 Installation diagram for one driving two constant pressure water supply card
One driving two constant
pressure water supply card
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