Unipower Combicontrol PIC432B User manual

1Combicontrol PIC432B
Combicontrol PIC432B
1Introduction........................................................................................................................... 2
2Installation ............................................................................................................................ 3
2.1 Typical installation .......................................................................................................................... 3
2.2 Supply ............................................................................................................................................. 3
2.3 pH/mV connection .......................................................................................................................... 3
2.4 Pt100 connection ............................................................................................................................. 3
2.5 Relay connection ............................................................................................................................. 3
2.6 Serial port RS232 ........................................................................................................................... 3
2.7 Analogue outputs ............................................................................................................................ 3
2.8 Clock/Date circuit ............................................................................................................................ 3
2.9 Data acquisition............................................................................................................................... 3
2.10 pH transmitter.............................................................................................................................. 3
3Displayandprogramming .................................................................................................... 4
3.1 Display............................................................................................................................................ 4
3.2 Display of measurements................................................................................................................ 4
3.3 Peak detectors ................................................................................................................................. 4
3.4 Programming .................................................................................................................................... 4
3.5 Programming via PC ........................................................................................................................ 4
3.6 User interface .................................................................................................................................. 4
4System description................................................................................................................ 5
4.1 Generally ......................................................................................................................................... 5
4.2 pH/mV measurement....................................................................................................................... 5
4.3 Temperature measurement .............................................................................................................. 5
4.4 Temperature compensation ............................................................................................................. 5
4.5 Manual zero adjustment.................................................................................................................. 5
4.6 Manual Slope adjustment................................................................................................................ 5
4.7Automatic calibration ...................................................................................................................... 5
4.8 Control features............................................................................................................................... 5
4.9 Parameter setting ............................................................................................................................. 5
4.10 On/Off control............................................................................................................................... 5
4.11 Hysteresis band ............................................................................................................................. 5
4.12 Proportional band.......................................................................................................................... 5
4.13 Basic frequency ............................................................................................................................. 5
4.14 Proportional frequency control (PI).............................................................................................. 5
4.15 Time proportional control ............................................................................................................. 5
4.16 Analogue proportional control ...................................................................................................... 5
4.17 Control examples........................................................................................................................... 6
5ThePC-programmePICSetup ............................................................................................. 6
5.1 Installation....................................................................................................................................... 6
5.2 System requirements ....................................................................................................................... 6
5.3 Communication ............................................................................................................................... 6
5.4 Parameter setup of PIC432B .......................................................................................................... 6
5.5 General Setup .................................................................................................................................. 6
5.6 Time/Date........................................................................................................................................ 7
5.7Language .......................................................................................................................................... 7
5.8 Save / Load parameters on disc ....................................................................................................... 7
6ThePC-programmeDataView ............................................................................................. 8
6.1 Installation....................................................................................................................................... 8
6.2 System requirements ....................................................................................................................... 8
6.3 Communication ............................................................................................................................... 8
6.4 Data ................................................................................................................................................. 8
6.5 Layout ............................................................................................................................................. 8
6.6 Output............................................................................................................................................. 9
6.7Language .......................................................................................................................................... 9
7Parameters.......................................................................................................................... 10
7.1 Setting up Parameters.................................................................................................................... 10
8Terminalconnections ......................................................................................................... 11
9Technicaldata ..................................................................................................................... 11
Table of contents

Combicontrol PIC432B 2
1 Introduction
Combicontrol PIC432B is a unit designed for measuring
and control of pH, mV and temperature. The pH/mVin-
put is designed for connection to combination electrodes
for pH, redox or ion selective electrodes. The tempera-
ture sensor used for the unit is a standard PT100 sensor
with a range of 0 to 150 οC.
The measured values are handled by two to four
independent control machines, which supervises the sig-
nals and controls external units. The control is performed
as On/Off control,APC or PI control based on frequency
or time. The four control machines - referred to as Limit
A, Limit B, Limit C and Limit D - have individual output
relays (Though Limit C and Limit D share relays with
Limit A and Limit B respectively). LimitA and Limit B
may be on the basis of either pH/mV or temperature. A
set of parameters determines the behavior of each control
machine. The Parameters are examined later in this
document. Setting up these parameters may be done via
the keypad of the unit or with a PC-software (PICSetup)
supplied with PIC432B. The unit has three analogue
outputs,which may be programmed as 0-20mA, 4-20mA
or 0-5V. The unit may also be set up so the analogue
outputs #2 and #3 follow a proportional band and hence
be used for control of frequency inverters or similar.
Two Flash memory circuits are build into the PIC432B
for data acquisition; one for temperature and one for pH/
mV. The sampling rate may be set up to 1 second, 10
seconds or 600 seconds. Using 60 seconds data may be
stored for 2 years. The stored data may be exported to a
spread sheet programme for instance Microsoft Excel.
PIC432B may also be delivered with the possibility of
continoustransmissionofmeasurementsforexternal data
acquisition or control.
The unit is made for wall mounting and is IP65. Supply
ranges from 80 to 250VAC/DC.

3Combicontrol PIC432B
2 Installation
2.1 Typical installation
The unit is made for wall mounting and may hence be
placed close to the place of measurement.After opening
the covers marked 1 the unit is easily mounted on the
wall via the holes marked 2. Access to the terminals is
gained by loosening the four screws marked 3, after
which the top is tipped and placed on the lower part as
shown in figure 2. The top may also be removed
completely by pulling out the cable marked 5. The
terminals used in the PIC432B are all screw less, but use
a patented spring system. Outline of the terminal
connectionsisfoundon page 11.In fig. 2 asetupisshown,
where the output relays are series coupled. The supply
voltages is connected (marked 7). The relay output
controls a dosing pump via the cable marked 8.
2.2 Supply
PIC432B is supplied with voltage ranging from 80 to
250VAC/DC connected to terminals 9 and 10.
2.3 pH/mV connection
The measuring electrode is connected to the BNC bush.
2.4 Pt100 connection
The Pt100 temperature sensor is connected to terminals
14 and 15. As the connection is a 2-wire connection,
please use wires with at least 0,5 mm2at considerable
distance between the measurement and the unit.
2.5 Relay connection
The two built-in relays should be connected to the
external equipment to give the desired function. The
relays are activated (closed) in normal condition but may
be inverted via the parameters.
2.6 Serial port RS232
The unit may be connected to a PC via terminals 6-7-8
or via the enclosed cable, marked 4 on figure 1.
2.7 Analogue outputs
Theanalogue outputs #1-3 may be programmed via setup
to one of the following: 0-20mA, 4-20mAor 0-5V. Max.
load for 0(4)-20mA output is 300Ωand min. 25 kΩfor
0-5V output. The outputs correspond to the following:
Output 1. Proportional to pH or mV. If both Limits are
temperature controlled the output is proportional to
temperature.
Output2.Proportional to temperature. If LimitAis used
for APC, the output is APC. See. 4.16
Output 3. Is only used when Limit B is APC.
2.8 Clock/Date circuit
The built-in clock/date circuit is equipped with a Li-
battery back-up. The battery is expected to have a life
time of at least 10 years. Time and date may be setup
from the front of the unit via Parameters # 25-26-27.
The setup may also be done via the PC-programme
PICSetup. See page 7.
2.9 Data acquisition
A circuit for data acquisition is build into the unit. Via
PICSetup sampling rates of 1, 10, 60 or 600 seconds may
be selected. The rate may also be set from the front of
the unit via Parameter# 24.The collected data is stored
in 2 pcs. 1Mb Flash circuits. If the Flash circuits are full,
the oldest data will be erased automatically. Under Pa-
rameter # 28 the Flash circuits may be erased manually.
2.10 pH transmitter
The input circuit for pH/mV is mounted on a separate
pcb with connection to the terminal pcb via a two-wire
connection. The input pcb is marked 6. If the pcb is not
mounted or defective, ‘Err1’ is shown in the display
If the place of measurement is far from the unit a stand
alone pH/mV transmitter should be used. The input
circuit mentioned above may be supplied as such a stand
alone unit.
Fig.1 Fig.2
3
4
1
2
5
6
7
8

Combicontrol PIC432B 4
3 Display and programming
3.1 Display
PIC432B contains a 4 digit numerical display and 12
LEDs, used to indicate various functions/parameters, as
one of these is selected.
The numerical display has multiple functions. Besides
displaying measurements it is also used for showing
parameters as well as programming them. See below for
a complete overview.
3.2 Display of measurements
pH is displayed as 0-14 pH with two decimals.
mV is displayed as 0-1000 with sign (positive without +).
Temperature is displayed from 0 to +150 with 1 decimal.
Changing between the measurements is done with the
‘Mode’-key.
3.3 Peak detectors
For each measurement there is a Max.- and a Min. peak
detector, which accumulate Max.- and Min.- values of
themeasuredvalue.The values are displayedbyactivating
the ‘Arrow-up’ for the max. values and the ‘Arrow-down’
for the min. values. The peak detectors may be reset by
the corresponding arrow-key and the ‘Set’-key simul-
taneously.
3.4 Programming
PIC432B is programmed via 4 keys; ‘Mode’, ‘Arrow-up’
and ‘Arrow-down’ as well as the ‘SET’-key. ‘Mode’ is
used for selecting one of the programmable parameters.
When a parameter is selected, the value may be altered
using the arrow-keys. ‘Arrow-up’ increases the value and
‘Arrow-down’decreases it. Toprogrammethenewvalue
press the ‘Set’-key.
Before programming the PIC432B, the unit must be
unlocked. This is done by selecting ‘Lock’ with the
‘Mode’-key; The display now shows ‘On’ and may by
changed to ‘Off’ using one of the arrow keys. The unit
automatically locks after 5 minutes without key-activity.
All programmed values are stored in EEProm.
3.5 Programming via PC
After installation of the enclosed program -PICSetup-
programming is easily done from the PC. All parameters
may be stored on disc and transferred to other units. The
programme is described on page 6.
3.6 User interface
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PIC432B

5Combicontrol PIC432B
4 System description
4.1Generally
In the following the unit’s features will be descibed in
details including a description of the various control
algorithms.
4.2 pH/mV measurement
The pH/mV input stage consists of a circuit with very
high input resistance and extremely low input current.
Afterthe signal treatment the signal is transmitted through
a galvanic isolation system to the micro processor, which
handles the display- and control functions etc.
4.3 Temperature measurement
The temperature sensor is supplied with a current of app.
2.5mA and the generated mV signal is amplified and
transmitted to the micro processor, where it is linearized.
4.4 Temperature compensation
If automatic temperature comensation is selected, this is
done by the micro processor on the basis of the measured
temperature. The unit also gives the possibility of using a
fixed temperature as basis of the compensation; Select
‘Set’ under parameter#13 and enter the desired tempera-
ture under parameter #14.
Note! The mV measurement is not compensated.
4.5 Manual zero adjustment
If a zero adjustment is required (Valid only for pH), please
select ‘Zero’ with the ‘Mode’-key and the display value
may be adjusted with the arrow keys to correspond with a
knownresolution.
The adjustment does not affect the mV measurement.
4.6 Manual Slope adjustment
Adjusting the Slope is done by selecting ‘Slope’ with the
‘Mode’-key and adjusting with the arrow keys (Valid for
both pH and Redox). If the unit is set up to use dual slope
(Valid only for pH), two slope values are stored. Using
single slope only one slope (gain) is stored, which will be
used for the whole range. By pH measurement the
adjustment does not affect the mV measurement, which
may then be used as electrode check.
4.7Automaticcalibration
Using Auto-Set the ‘Mode’-key is used to select the
function and the text ‘SEt0’ is shown in the display tog-
gled with the actual measurement. Using the arrow keys
also the ‘SEt1’and ‘SEt2’ may be selected. To be able to
useAuto-Set the known resolutions must be programmed
into the unit under parameter Parameter #22 and Para-
meter #23. The range of the resolutions is listet below:
‘SEt0’ = pH7 (always pH7,00)
‘SEt1’ = pH10 (8,00 pH 13,00)
‘SEt2’ = pH4 (1,00 pH 6,00)
When the buffer resolution with the value corresponding
to the selected Auto-Set point is chosen, please activate
the ‘Set’-key. If the calibration is valid, the display will
stop flashing the measurement value and will only show
‘SEtx’. If the display continues to flash, the buffer reso-
lution lies outside the valid range which is the program-
med value ± 1 pH.
4.8Control features
Limit A and Limit B may be programmed independently
to one of the following control modes: 1. On/Off, 2. Pro-
portionalfrequency,3. Proportional time. 4.APC-function,
which is Analogue Proportional Control. The limits may
be chosen as Max. or Min. limits. The different control
modes may be related to any of the three possible
measurements.
Limit C and Limit D both run On/Off control if enabled.
Both limits may be selected independently as max.- og
min.-limits.
Limit C may only be enabled if Limit A is selected as
APC. Limit C activates Relay A. The limit is related to
the measurement of Limit A.
Limit D may only be enabled if Limit B is selected as
APC. Limit D activates Relay B. The limit is related to
the measurement of Limit B.
4.9Parametersetting
For selection and description of the various parameters
please refer to the parameter list on page 10. If the setup
is to be done via ‘PICSetup’, please refer to the paragraph
describing the PC-software on page 6.
4.10On/Offcontrol
When the measurement crosses the chosen setpoint, the
correspondingrelaywillopenand will not close again until
the measurement exceeds the hysteresis band.
4.11 Hysteresis band
Ahysteresis band always lies above a Min limit and below
a Max limit.
4.12Proportionalband
The proportional band is a range where a variable control
isperformed.Aproportional band always lies above a Min
limit and below a Max limit.
4.13Basic frequency
The basic frequencies for LimitAand Limit B may be set
from1 imp/min to 180 imp/min.
4.14Proportionalfrequency control(PI)
If the measurement lies outside the proportional band the
relay will pulsate with the basic frequency. Inside the pro-
portional band the frequency is changed linearly towards
zero as the the measurement approaches the setpoint.
4.15Timeproportionalcontrol
The frequency is constant = the basic frequency. Instead
the duty cycle is changed according to the same principle
as for PI control. If the measurement lies outside the pro-
portional band the relay is closed permanently and open
permanently if the limit is exceeded.
4.16Analogueproportionalcontrol
SelectingAPC for LimitAcauses the analogue output #2
to be used asAPC-output. Limit B always controls output
#3 atAPC. APC has the following algorithm:

Combicontrol PIC432B 6
5 The PC- programme PICSetup
5.1Installation
The programme is installed from the enclosed CD-ROM
or downloaded from the internettet on www.hydria.dk
5.2 System requirements
The programme runs under the following Windows ver-
sions: - 98 and ME
- NT 3.5 or newer, and 2000
- Xp
- 7
- 8, 8.1
- 10
Minimum disc place is required - app. 1Mb.
5.3Communication
From the menu select the used COM-port under
‘Communication’. If it is not obvious which port the
PIC432B is connected to, the PICSetup software fea-
tures an auto connect functionality, which searches all
available COM-ports for the PIC432B. This functionality
is found in the menu under „Communication->Auto
connect“.
5.4ParametersetupofPIC432B
Activating ‘Parameters’ from the menu produces the
property sheet shown in the following figure. Each para-
meter category appears by selecting the corresponding
property sheet; ‘LimitA’, ‘Limit B’, ‘Limit C’, Limit D’,
‘Miscellaneous’and‘Time/Date’.Aftersetting therequired
parameters always exit by pressing the ‘OK’-button to
transfer the new settings to the unit. Pressing ‘Cancel’
discards the changes. If the parameters are not transfer-
red correctly to the unit a message is given in the form of
a dialog box. The user may therefore be sure of the trans-
ferifnomessage has been given within a coupleofseconds
after pressing the ‘OK’-button.
5.5 General Setup
On the property sheet ‘Miscellaneous’ various parameters
which are general for the unit can be found. These may
be altered as described in chapter 5.4.
If the measurement lies outside the proportional band the
analogue output will equal 100%. When the measurement
approaches the setpoint the analogue output is changed
linearly towards 0%.
4.17Control examples
On/Off control may be used for alarms and control of
pumps.Proportional frequencycontrolisprimarilydesigned
for the control of dosing pumps. Proportional time control
may be used for control of heating elements. APC may
be used for control of frequency inverters.
If the unit is found the connected COM-port may be seen
under „Communication“. If not, a message is given telling

7Combicontrol PIC432B
5.7Language
The software supports three languages - English, German
and Danish. Selecting the language is done from the menu
under ‘Language’ as shown in the following figure.
When a language is selected the menu, the dialog boxes
and all texts are presented in the chosen language.
5.6 Time/Date
On the property sheet ‘Time/Date’the settings for the time
stamp of the collected data are found. Opening this sheet
causes the actual time from the PIC432B to be transfer-
red; Hence - the time/date shown is not the Windows time
on the PC!. Using the Windows time in the unit is possible
by pressing the button ‘Syncronize’ followed by pressing
the ‘OK’-button to transfer the settings to the unit.
5.8 Save / Load parameters on disc
Foralaterprogrammingorreprogrammingofthe Control-
ler a feature for storing a parameter set on disc exists. It is
selected from the menu under ‘File’.
When a parameter set is saved, the most recent transfer-
red parameters are stored. So, to be sure that the correct
parameters are stored, please select ‘Parameters’ from
the menu before saving to disc. This causes a transfer of
the current parameters from the connected PIC432B.
Loading a parameter set transfers a parameter set from
disc to the connected unit. If the transfer is not correct a
message is given.

Combicontrol PIC432B 8
6.1Installation
The programme is installed from the enclosed CD-ROM
or downloaded from the internettet on www.hydria.dk
6.2System requirements
The programme runs under the following Windows ver-
sions: - 98 and ME
- NT 3.5 or newer, and 2000
- Xp
- 7
- 8, 8.1
- 10
Minimum disc place is required - app. 1Mb.
6.3Communication
From the menu select the used COM-port under
‘Communication’ (See chapter 5.3).
6.4 Data
Data for processing may be „input“ in two ways: Transfer
from PIC432B or opening of previously transferred data.
Transfer from PIC432B is done by activating „Data
acquisition“ in the menu, after which the following dialog
box appears.
6 The PC- programme DataView
The user must select the amount of data as well as the
type of data. For information the unit’s acquisition time is
also shown, since it determines the possible amount
selections. To start the transfer please press „Get“, and to
cancel the selections press „Cancel“ . If a transfer is star-
tetaprogress window willappearasshown in thefollowing
The transfer may be aborted at any time by pressing the
„Abort“-button. When the transfer is completed the pro-
gramme shows the transferred data and the user is now
able to proces them.
For later display / proces of the transferred measurements,
the software allows the user to store the data on disk.
This is done via the menu under „File->Save“ as shown in
thefollowing figure.
Openingofpreviously transferred dataisdonevia the menu
under „File->Open“ (See above). This allows the user to
search the discs for the file containing the desired data.
When the file is found, the data is opened and the soft-
ware displays the loaded measurements.
6.5Layout
Theinput data ispresentedas shown inthefollowing figure.
Thepresentationis built around amainwindowand a zoom
window.The main window shows up to all measurements
(determined by the main window time range), whereas
thezoom window always shows 1/10 of themain window.
If the number of measurements exceeds the main window
time range, a scrollbar appears making the display of all
measurements possible. For information to the user the
start- and end time for the measurements in both the
main window and the zoom window are displayed. These
times represent the time of the first measurement in the
window (start) and the last measurement in the window
(end). Which part of the data amount to be displayed in
thezoom window is determined by the user with the zoom
bar,which maybemovedby „dragging“ itwiththemouse.
If both pH/mV- and temperature measurements are pre-
sent, the user may select which measurements to display
using the checkboxes for displayed measurements.
figure. This progress window is present as long as the
transfer is in progress.

9Combicontrol PIC432B
Thezoomwindow contains a cursor,whichmay be moved
inside the whole zoom window using the mouse or the
arrow keys. Cursor data, i.e. the time for the measure-
ment(s) as well as the value(s) (pH/mV and tempera-
ture), are shown above the zoom window. These values
change with the movement of the cursor.
Using the main window time range as well as the zoom
bar and the cursor it is possible to display every single
measurement.
6.6Output
The programme has built-in functions for external
documentation - both electronical and on paper.
Electronical in the form of export to spread sheet as well
as screen dump in Windows BITMAP format.
Export to spread sheet is found under „File->Export->...“
and allows the user to export the measurements shown in
the zoom window or in the main window or export of all
measurements. If export of zoom window data or main
windowdata is selected, only the displayed measurements
in the zoom- or main window respectively are exported.
The decimal separator may be chosen as comma (,) or
decimal point (.).
Screen dump may be used directly in a document, since
the BMP-format may be imported into most word pro-
cessing softwares.
Print out on paper is selected via the menu under „Print-
>Printer“ and gives a complete print out of both windows
as well as all time- and cursor data.
6.7Language
The programme supports at present three languages:
English, German and Dansk. Selecting a language causes
all menues, dialog boxes and texts to change.

Combicontrol PIC432B 10
7.1Setting up Parameters
In the table below a list of all parameters is shown along
with their function and setting range. The term „Default“
means factory setting.
If a parameter requires changing PIC432B must be
unlocked first. Then ‘Parameters’ are selected with the
‘Mode’-key and the parameter number is found with the
7 Parameters
Par.# Parameter Description Programming Default
1Unit(A)Limit A on
o
C, pH or mV 0=pH, 1=mV, 2=Temp. 0
2Unit(B)Limit B on
o
C, pH or mV -A- = (As A),
o
C = Temp -A-
3 Mode (A) Control mode for Lim A 0=On/Off, 1=PI, 2=Time prop., 3=APC 1
4 Mode (B) Control mode for Lim B 0=On/Off, 1=PI, 2=Time prop., 3=APC 0
5 Max/Min (A) Lim A as Max. or Min. 0=Min, 1=Max 1
6 Max/Min (B) Lim B as Max. or Min. 0=Min, 1=Max 0
7 Xp (A) Proportional band for Lim A Max 2,5pH, Max 250mV, Max 25 OC0,50
8 Xp (B) Proportional band for Lim B Max 2,5pH, Max 250mV, Max 25 OC0,50
9 Hyst. (A) Hysteresis band for Lim A Max 2,5pH, Max 250mV, Max 25 OC1,00
10 Hyst. (B) Hysteresis band for Lim B Max 2,5pH, Max 250mV, Max 25 OC1,00
11 Freq. (A) Basic frequency for Lim A 1-180 imp/min 60
12 Freq. (B) Basic frequency for Lim B 1-180 imp/min 60
13 Comp. Temperature compensation "Auto" or "Set" Set
14 TComp Fixed temperature setting 0 - 150
o
C25,0
15 I/V output 1 Analogue output 1 mode "0-20", "4-20" or "0-5" 4-20
16 I/V output 2 Analogue output 2 mode "0-20", "4-20" or "0-5" 4-20
17 I/V output 3 Analogue output 3 mode "0-20", "4-20" or "0-5" 4-20
18 mV Iout Numerical or absolute 1000=numerical, 2000=absolute 1000
19 Pol. (A) Relay polarity for relay A "inv" or "ninv" Ninv
20 Pol. (B) Relay polarity for relay B "inv" or "ninv" Ninv
21 Dual Slope Enable Dual Slope OFF=Single slope, On=Dual slope OFF
22 Buffer 1 Upper reference value 8.00 - 13,00 pH 10,00
23 Buffer 2 Lower reference value 1,00 - 6,00 pH 4,00
24 DAQ-t Sampling time 1, 10, 60, 600 (seconds) 60
25 Limit (C) Activation of Lim C, max/min Off, 1 = Min, 2 = Max Off
26 Limit (D) Activation of Lim D, max/min Off, 1 = Min, 2 = Max Off
27 Setpoint (C) Setpoint for Lim C 0..14pH, 0..±999mV, 0..150 OC9.80
28 Setpoint (D) Setpoint for Lim D 0..14pH, 0..±999mV, 0..150 OC7.50
29 Hyst. (C) Hysteresis band for Lim C Max 2,5pH, Max 250mV, Max 25 OC0.50
30 Hyst. (D) Hysteresis band for Lim D Max 2,5pH, Max 250mV, Max 25 OC0.50
31 Clock (Time) Hour in 24h format (tt,mm) 0..23, 0..59
32 Clock (Date) Date (mm.dd) 1..12, 1..31
33 Clock (Year) Year 2009..2099
34 Default Factory settings "dEF" = keep, "rSt" = reset "dEF"
35 Erase Flash Erase data flash "dAtA" or "dEL" dAtA
arrow keys. When the desired number is shown on the
display the ‘Mode’ key is pressed again to display the
valueoftheparameter.Nowthe parameter may be changed
using the arrow keys. To programme the change press
the ‘Set’key. To discard the change press the ‘Mode’-
key.