
AUTOMATIC DIFFERENTIAL
PRESSURE CONTROL FOR
FILTERS SERIE:
FTA/DP
FTA/DP7
INSTRUCTIONS MANUAL
WARNING!
The equipment must be used only for the utilization for which they have been
designed, as shown in the technical documentation.
Read carefully this leaflet until the end before starting any operation.
Proceed strictly according to all directions included in this manual.
ANY OTHER APPLICATIONS OF THE EQUIPMENT DIFFERENT THAN THE MENTIONED
ONES IS MADE UNDER THE ONLY RESPONSIBILITY OF THE USER.
For any assistance concerning the installations, maintenance or utilization of the equipment
apply the NOBEL Service Center closest to you or directly :
NOBEL S.r.l. via Monfalcone 8 – I-20132 Milano
tel. +39 02 2827968 fax +39 02 2610839
rev. 1
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
1.
•
•
•
•
2.
Technical characteristics
power supply
max driving power
max power
max service pressure
V ph/Hz
W
W
bar
230 1/50
4 x 50 (8 x 50 for FTA/DP7 version)
250
10
Installation
2.1.
Installation diagram
2.2.
Hydraulic connections
• Put in the filters on parallel, each of them with their own shut-off valves, as shown on the
diagram and the special manual of the filters themselves.
• In order to avoid shut-off during maintenance operations, an emergency by-pass line should
be provided.
• put in the pressure sensor P-IN, complete with shut-off valve and pressure gauge, on the
inlet manifold of the filters
• put in the pressure sensor P-OUT, complete with shut-off valve and pressure gauge, on the
outlet manifold of the filters
• fix the control panel to the wall, next to the filters; take care that the length of the wires of the
sensor is approx 2 meters; since an excessive length of the wires causes a decreasing of the
signal, the wires cannot be extended.
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
2.3.
Electrical wiring connections
WIRING DIAGRAM:
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
Make the electrical wiring connections inside the control panel, as explained below :
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
+
6
+
7
0
1
0
2
0
3
0
9
0
10
0
11
0
12
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
Power supply 230V, 50 Hz directly to the clamps of the main switch
GND
pressure inlet trasducer P-IN
"
"
"
"
"
"
"
"
pressure outlet trasducer P-OUT
"
"
"
"
"
"
"
"
solenoid valve filter 1
"
"
solenoid valve filter 2
"
"
solenoid valve filter 3
"
"
solenoid valve filter 4 (only for version FTA/DP7)
"
"
“
“
“
“
solenoid valve filter 5 (only for version FTA/DP7)
"
"
“
“
“
“
solenoid valve filter 6 (only for version FTA/DP7)
"
"
“
“
“
“
solenoid valve filter 7 (only for version FTA/DP7)
"
"
“
“
“
“
A free voltage contact for remote segnalation of alarm (max 1 A, max 24 V) is also available,
directly on the output Q4 of the programmer.
It is also possible to inhibit the starting of washing by mean of a free voltage external contact.
It will be connected to one of any clamp + and the input I2 of the programmer.
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
3.
End cycle and washing
3.1.
End cycle
The automatic control of filters FTA/DP is equipped with 2 pressure sensors plumbed on inlet
and outlet manifolds of the filters; the sensors gauge the correspondent pressure (IN/OUT) and
therefore also the differential pressure.
When the pressure drop across the filter bed reaches the value of 0.8 bar (80 kPa), max
allowable pressure drop, it is required to run the washing of the filter.
During normal service, possible peaks of pressure could cause a wrong indication of reached
max allowable pressure drop; in order to avoid that, the end-cycle driving is delayed of an
adjustable time. Hence the max pressure drop must remain for all the time of adjusted delay, to
drive the end-cycle.
The electronic micro-processor programmer allows also to run the washing according to time
schedule, at pre-set time and day (max 3 washings per day).
To set the washing by time only (regardless of pressure drop), proceed as follows :
- set at least 1 washing by time schedule
- enter as max allowable pressure drop (end-cycle) the value 10000.
To set the regeneration by pressure drop only (regardless of time), proceed as follows :
- delete any programmed washing by time control
- enter as max allowable pressure drop (end-cycle) the desired value (standard =80)
3.2.
Washing
Only one automatic control type FTA/DP can control the washing of 1, 2 or 3 filters model
FTA/E, installed on parallel, as shown on installation diagram, while the automatic control type
FTA/DP7 can control the washing of up to 7 filters.
The programmer allows to enable the washing of each and every filter installed; the washing
of filter no.1 is always enabled; to enable the washing of filters no. 2, 3, 4, 5, 6, 7, the setting of
parameters from B12 to B17 are used, as explained at correspondent chapter.
If more washings are enabled, they will follow one after the other one, with a delay of 15
seconds between one washing and following one.
The washing can also be started manually at any time, out of any automatic programme, by
keeping pushed for 3 consecutive seconds the button “START”; the washing of all enabled filter
will start, one after the other one, when the manually started washing is completed, the unit will
continue to work according to previous programming.
The pushing of manual start of the washing, while it is already running, has not any effect.
A running washing can be interrupted, in any moment, by pushing the button RESET; if more
than one filter is enabled, the washing of next filter will start; naturally it can be interrupted the
same way.
3.3.
Inhibit of the washing
It is possibile to inhibit the automatic starting of washing by mean of an external contact,
using the input I2 of the programmer as described at paragraph "Electrical wiring connection".
Hence, when the end-cycle is reached, the filter will remain on WASHING REQUIRED until
the inhibit signal is switched off.
Even if the inhibit signal is still on, it is also possible to start manually the regeneration, as
above explained.
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
4.
Control panel
4.1.
Functions of the logical programmer
The logical programmer Siemens serie LOGO handles the logical working of the whole unit.
Its display allows the visualization of the status of the logical inputs (marked as I), the logical
outputs (marked as Q), current time and date, the several messages enabled by the
programme.
It is also possible to modify the settings of the entered numerical parameters (marked as B).
The numbering of the inputs and outputs is arranged on several rows, each of them
correspond to a ten (I1÷I9, I10÷I19 etc.).
By pushing the buttons or the display shows, alternatively, the visualizations of the
service : current time and date, inputs, outputs, (M, to be ignored), function buttons (ESC+C..).
By pushing the buttons and the messages enabled by the programme are visualized.
The used functions are the following :
MARK
I1
I2
I3
I7 (AI1)
I8 (AI2)
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
DESCRIPTION
button START
input available for inhibit of washing start
button RESET
pressure sensor INLET (P-IN)
pressure sensor OUTLET (P-OUT)
output of the solenoid valve filter 1
output of the solenoid valve filter 2
output of the solenoid valve filter 3
output of the alarm signal
output of the solenoid valve filter 4 (only for version FTA/DP7)
output of the solenoid valve filter 5 (only for version FTA/DP7)
output of the solenoid valve filter 6 (only for version FTA/DP7)
output of the solenoid valve filter 7 (only for version FTA/DP7)
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
B1
B3-1
B4
B5
B12
B13
B14
B15
B16
B17
Time of WASHING
setting time and days of washing
delay of driving of end-cycle
max allowable pressure drop
enables washing filter 2
enables washing filter 3
enables washing filter 4 (only for version FTA/DP7)
enables washing filter 5 (only for version FTA/DP7)
enables washing filter 6 (only for version FTA/DP7)
enables washing filter 7 (only for version FTA/DP7)
All settings of automatic working are factory-made at the shipment.
See the chapter “SETTINGS” to check the factory-set.
4.2.
Signals on the display of the programmer
The report messages enabled by the programmer are visualized on the display one at a time,
with a determinate priority.
The buttons and are used to scroll the messages.
The button is used to turn back to service visualizations.
The messages that can be visualized are :
"P IN"
"P OUT"
"DP"
"SET"
"RINSE F1"
"RINSE F2"
"RINSE F3"
"RINSE F4"
"RINSE F5"
"RINSE F6"
"RINSE F7"
"ATTESA LAVAGGIO"
"WAITING FOR RINSE"
"ALLARME"
"ALARM"
These visualizations are always available.
They show, respectively, (values are expressed in bar) :
current inlet pressure
current outlet pressure
current differential pressure value
max differential pressure value to drive end-cycle
These visualizations are available only when the washing of
one filter (1,2, 3, 4, 5, 6 or 7) is running.
The pre-set time and the elapsed time from the starting of the
washing are also shown.
This visualization appears when the group of filters needs
washing, but it cannot run due to the inhibit signal (input I2).
It is also visualized during the interval between the washing of
one filter and the subsequent one.
This visualization is available only when, at the end of
washings, the pressure drop is still higher than the max
allowable value.
The alarm inhibits the running of further washings, and can
be re-set by pushing the button “RESET”.
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
Settings
5.1.
How to set current time and day of the week
The programmer is equipped with internal clock, keeping exact time for 80 hours in case of
power failure. To set the current time and day, proceed as follows :
1.
2.
3.
4.
5.
6.
7.
push the button ESC
push the button until the pointer > indicates "Set …"
push the button OK
the pointer indicates “Clock..”, push the button OK
the pointer indicates “Set Clock..”, push the button OK
push the button to point the day or the number to be modified
when the pointer blinks on the day or the number to be modified, push the buttonor
until the new desired day or value is shown (symbols related to days of week are
explained at following chapter)
8. repeat the same operation with other values, if required
9. push the button OK to confirm (save) the modifications
10.push twice the button ESC to go back to the visualization of service.
The programmer is already factory set for automatic updating with european summer time
(S/W Time ON = EU)
5.2.
How to set day and time of regeneration
M/-
T/-
W/-
T/-
F/-
S/-
S/-
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
The days of the week can be set one by one; they appear on the display in the weekly row: it
is possible to select (visualized the initial letter of the day) or not (visualized the symbol -).
The row and explanation of the symbols that appear on the display are :
Monday
5.
The available digits to set the time are between 00:00 and 23:59; the symbol --:-- indicate
not any ON and/or not any OFF.
The washing starts at the time set on the line ON.
The time on the line OFF MUST BE NECESSARILY SET one minute later than the time
on the line ON.
The programmer allows to set up to 3 regeneration per day (B3-1, B3-2, B3-3).
Proceed as follows to modify :
1.
2.
3.
4.
push the button ESC
push several times the button until the pointer > points "set param"
push the button OK .
push several times the button until the display shows the parameter where to make the
modification (B3 - 1 or other)
5. push the button OK , the blinking cursor will take place on the line of the days (D)
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
6. by pushing the button the cursor moves on the positions correspondent to the days of
the week
7. push the button to enable/disable
8. by pushing the button the cursor moves on the several digits of the hours (lines ON and
OFF)
9. when the cursor blinks on the digit to modify, push several times the until the desired
number appears
10. repeat the same operations with other digits, whether required.
11. push the button OK to confirm the modifications
12. push the button to visualize other parameters which must be modified, and operate as
explained at above points 5 ÷11, or push the button ESC to leave the modification menu
13. push the button ESC to go back to visualization of service.
5.3.
How to set time of phases, delay, pressure drop value
Proceed as follows to modify :
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
push the button ESC
push several times the button until the pointed > points "set param"
push the button OK .
push several times the button until the parameter to modify is shown (B1 or other)
push the button OK .
by pushing the button , move the cursor on the digit to modify
when the cursor blinks on the digit to modify, push the button until thge desired digit
appears
repeat the same operations with other digits, whether required
push the button OK to confirm the modifications
proceed as explained for other modifications of other parameter or push the button ESC
to leave the modification menu
push the button ESC to go back to visualization of service
NOTE:
• during the modifications, the normal service is NOT interrupted.
• In modification menù, ref. to the timers, the digits visualized on the line (marked
as Ta) underneath the line of the time setting (marked as T), indicate the status
of the present counting of the time related to the selected timer
s = seconds (00,00 ÷ 99,95)
• time basis are :
m = minutes (00:00 ÷ 99m:59s)
h = hours
(00:00 ÷ 99h:59m)
• although the programmer allows to set values up to 19999, in the field of the
max allowable pressure drop (B5), let us remind that the real max allowable
value is 100, correspondent to a pressure drop of 1 bar (=100 kPa = max
allowable value pressure drop across the filter).
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
5.4.
How to set parameters switch (ON/OFF)
Proceed as follows to modify the ON/OFF parameters :
1.
2.
3.
4.
5.
6.
7.
8.
push the button ESC
push several times the button until the pointed > points "set param"
push the button OK .
push several times the button until the parameter to modify is shown (B74 or other)
push the button OK : the cursor blinks on the notice “ switch”
push the button to modify the status ON or OFF
push the button OK to confirm the modifications
proceed as explained for other modifications of other parameter or push the button ESC
to leave the modification menu
9. push the button ESC to go back to visualization of service
5.5.
Factory set
Parameter
B1
B4
B5-ON
B5-OFF
B12
B13
B14
B15
B16
B17
Parameter
utilization
time WASHING
delay of the max differential pressure driving
max differential pressure
Must be NECESSARLY the same of B5-ON
enables washing filter 2
enables washing filter 3
enables washing filter 4 (only for version FTA/DP7)
enables washing filter 5 (only for version FTA/DP7)
enables washing filter 6 (only for version FTA/DP7)
enables washing filter 7 (only for version FTA/DP7)
utilization
Start of washing by time
"
"
B3 - 1
B3 - 2
B3 - 3
Day of
regeneration
M
-
set value
20.00 s
60.00 s
80 (equal to 0.8 bar)
80
ON
ON
ON
ON
ON
ON
time ON
time OFF
00 : 01
-- : --- : --
00 : 02
-- : --- : --
NOTE : when the washing of one filter is disabled, all the following ones will be disabled as
well, regaldless if their washing is enabled or not.
Example: filter no. 2 disabled (parameter B12=OFF), also filters no 3, 4, 5, 6 and 7
will be automatically disabled.
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INSTRUCTIONS MANUAL AUTOMATION FTA-DP
6.
Trouble-shooting guide
PROBLEM
• The electronic
programmer does not
switch ON
• The rinses does not run
CAUSE
• electrical power is
disconnected
• the programmer is defected
• electrical power is
disconnected
• the programmer is not correctly
adjusted
• the programmer is defected
• Rinse is electrically started • the solenoid valve is defected
but it does not run
hydraulically
• the manometers are not quite
• The values of pressure
calibrated
shown on the display of
the programmer are by far
different than the ones
• the pressure transducers are
gauged by manometers
not quite calibrated i sensori di
pressione sono starati
HOW TO SOLVE
• connect electrical power
• replace the programmer
• connect electrical power
• adjust correctly the
programmer
• replace the programmer
• replace the solenoid valve
• check the real pressure values
by using a standard instrument;
then replace the instrument
(manometer or transducer)
which gauge the uncorrect
value *
* Normally, a difference of approx 3-5 % between the values gauged by the two different
measurement systems is acceptable.
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