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The unit will detect
how many “plug-in” boards (each of 2 outputs) are used in the particular case.
How will the outputs be allocated depends on the definitions made during the configuration process
described below. The following rules apply:
1.
Backflush valves will be allocated starting from output 1 and up.
2.
The last backflush valve can be canceled and then its allocated output will be left
unused.
3.
Alarm output, Delay-Valve and Main-Valve when defined, will be allocated in this order,
right after the last backflush valve (whether in use or not).
Example:
Assuming
there are 3 “plug-in” boards, this makes 6 outputs for use. If there are no Alarm-output, no
Delay-Valve and no Main-Valve all the 6 outputs will be allocated for backflush valves.
If additionally a Main-Valve is defined, the first 5 outputs will be allocated for backflush valves and
output No 6 for the Main-Valve. Output No 5 (of the last backflush valve) can be canceled and left
unused. If additionally a Delay-Valve is defined it will be allocated to output 5 right before the Main
valve, leaving the first 4 outputs for backflush valves, and once again output No 4 (of the last backflush
valve) can be canceled and left unused. If additionally an Alarm-output is defined it will be allocated
before the Delay-Valve leaving only 3 of the first outputs for backflush valves. No 3 can again be
canceled.
During the configuration process the following features are defined:
Main Valve (sustaining valve) - Yes/ No
. When the answer is “Yes” the Pre Dwell delay between the
Main Valve opening and the opening of Station No. 1 can be defined.
The selectable delay steps are:
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 sec
1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 min
Dwell time -
the delay between stations
– can be set to 5, 10, 15, 20, 25, 30, 35,
40, 45, 50, 55, or 60 sec.
DP delay -
the delay during which the DP sensor reading is expected to remain
stable before reaction
– 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60
sec.
Looping limit -
the number of consecutive flushing cycles triggered by the DP sensor
before deciding that there is an endless looping problem. The options
are: 1-
10 or “no” which means ignoring the looping problem.
Alarm -
Yes/No
– allocating one output for alarm activation.
Delay Valve -
Yes/No
– allocating an output for Delay Valve activation.
View Outputs -
this is a special mode that enables passing through the list of outputs
to see how each output was allocated. Use the + key to change the
“no” into “yes” and confirm by “Enter”, then keep using the + key to
pass through the list. At the bottom left corner the ordinal number of
the output is displayed and its allocated function appears in large
letters at the center of the screen. Notice that the number of possible
outputs that can be used is always an even number since it results
from
the number of “plug in” boards (each of 2 outputs) included.
However if the number of outputs needed is not an even number,
then the last valve allocated for flushing may be canceled by use of
the manual operations key.
Pressure units -
deciding about the units to be used for pressure measurement.
Selecting between BAR or PSI .
Calibration-
Zero calibration of the built in electronic DP sensor. While the sensor
ports are disconnected select Calibration = Yes.
Version display-
The last screen of the configuration supplies information about the
software version of the controller. the version consists of 4 digits like
the following:
00
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