amiad ADI-P - Annex A. Chaining ADI-P Controllers

ADI-P 910101-000992 / 05.20 02 Page 16 of 21
Annex A. Chaining ADI-P Controllers:
General:
It is possible to daisy-chain several ADI-P Controllers in order to operate a battery of filters’ flushing according to a
single DP switch (either internal or external).
The DP switch that reads the pressure drop across the battery is the internal DP switch of the first controller in the
chain (the Primary) or an external DP switch connected to the Primary Controller. The End of Cycle output of the
Primary Controller is connected to the external DP input of the second controller in the chain (the first Secondary)
and this controller’s EC output is connected to the DP input of the rest. This type of connection can be spanned
over as many controllers as needed. (See page 17 – Stage 1: Wires Connection).
When the actual DP switch sends a signal, the Primary Controller starts a flush cycle. Once this cycle is completed
the Primary Controller sends a signal through its EC output to the second controller to start its flush cycle, and so
on to the last controller in the chain, as illustrated in the following:
Important Note: Please make sure that the DP delay in the chained controllers (Secondary controllers) is set to no
more than 5 seconds. This ensures proper transition from the last filter in the first controller to the first filter in the
next controller.
Optional
External DP
Switch
DP
Input
EC
Output
DP
Input
EC
Output
DP
Input
EC
Output
Primary Controller
Secondary 1 Controller
Secondary N Controller