AITA ELECTRONICS PTR2000 User manual

PTR2000/2300
DIGITAL POTENTIOMETER
User guide
PTR2000 - PTR2300
AITA ELECTRONICS s.a.s. 13823 - STRONA (BIELLA) Via Fontanella Ozino, 17/a
TEL.: [phone] FAX.: [phone] www.aitaelectronics.it email: [email protected]

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PTR2000 and PTR2300 are microcontroller digital potentiometers, which can par-
tialise an input voltage (from –10,00V to + 10,00V) in 1000 maximum values that can
be set from 000 to 999.
The position of the potentiometer can be set using either the “+” and “-” buttons
on the front panel, or the two remote inputs in the terminal block, terminals 8 and 9.
The voltage to be partialised can be provided by the user on terminal 4, or it can
be a -10,00V or +10,00V voltage generated by the potentiometer itself.
Only with the PTR2300 version it is possible to program 7 position values,
which can be retrieved using the 3 BCD inputs, terminals 10, 11 and 12.
DESCRIPTION
♦ Power supply: 20÷30Vac/dc or 85÷265Vac (others available on demand).
♦ Absorbed power: 1VA.
♦ Digital microcontroller.
♦ Programmability of every parameter using the two buttons on the frontal panel.
♦ Non-volatile EEPROM memory.
♦ Analog input impedance: 1 Mohm.
♦ Analog output impedance: 10 Kohm.
♦ Digital inputs impedance: 6 Kohm.
♦ Analog output: from - 10,00V to + 10,00V Imax = 25mA max.
♦ Auxiliary voltage available on terminal 7: 15Vdc 20mA max.
♦ Every potentiometer is provided with panel mounting brackets.
♦ Dimensions: 48mm x 48mm depth 89mm.
GENERAL FEATURES
♦ Minimum position value.
♦ Maximum position value.
♦ Personal code to access usage.
♦ Full scale value.
♦ Display brightness.
♦ Darkening of non significant zeros.
♦ Decimal point position.
♦ Selection of the reference voltage (external, +10,00V internal, - 10,00V internal).
♦ Selection between unipolar and bipolar.
PROGRAMMABLE FEATURES

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In order to access the programming
mode, use the two buttons on the frontal
panel.
If the Access Code Setup (PAR02) is
different from “000” you need to enter the
Access Code first (PAR02) and then go on.
PARAMETERS PROGRAMMING
Press the “+” and “-” buttons at the same time: “000” will be displayed. Enter the
code “739” to access the parameters programming. Press the “+” button to raise the
flashing number. Press the “-” button to pass on to the following number. After you set
up the last number, confirm by pressing “-” and “P00” (which indicates the parameter
number) will be displayed alternating with 3 numbers, which indicate its value.
How to modify the parameter number to be programmed. When the para-
meter number is displayed (P00, P01, P02, ecc...), press “+” to pass on to the follo-
wing parameter or press “-” to go back to the preceding one.
How to modify the parameter value to be programmed. When the parameter
value is displayed (000, 999, 123, ecc…), press “+” to start programming. The first
number on the left will start flashing and by pressing the “+” button it will be possible
to raise this number until it reaches the desired value. At this point press “-” to pass on
to the following number and repeat the procedure. After you set up the last number,
confirm by pressing “-” and the parameter number alternating with its value will be di-
splayed.
How to exit programming mode. When the parameter number is displayed
(P00, P01, P02, ecc...), press “+” and then press “-” without releasing “+”.
N.B.: in case of indecipherable data in the parameters, it will be necessary to set
up the default data.
DEFAULT DATA SETUP
1. Switch off the potentiometer.
2. Press and keep pressed the “+” and “-” buttons.
3. Power the potentiometer.
4. The text “dEf” will be displayed.
5. Release buttons.
6. The potentiometer restarts from the “123” position.
7. Program the parameters as needed and replace the default data automatically set
by this procedure.

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NUMBER VALUE DESCRIPTION
P00 000÷999
(000)
Minimum position
Enter in this parameter a number between 000 and 999
that will indicate the minimum value under which it will not
be possible to set the potentiometer.
P01 000÷999
(999)
Maximum position
Enter in this parameter a number between 000 and 999
that will indicate the maximum value above which it will
not be possible to set the potentiometer.
P02 000÷999
(000)
Access Code Setup
Enter in this parameter a number between 000 and 999
that will indicate the access code needed to program the
potentiometer with the “+” and “-” buttons.
By entering “000” no access code will be setup and the “+”
and “-” buttons will always be enabled.
P03 Full scale value
Enter in this parameter a number between 000 and 999
that will indicate the full scale value (10,00V). Ex.: P03 =
680
P04 0÷9
(3)
Display brightness
Enter in this parameter a number between 0(min. bright.)
and 9(max. bright.) to set up the desired display bri-
ghtness.
0÷1
(1)
Non significant zeros
If = 0non significant zeros will be visible (es.: 05.6).
If = 1 non significant zeros will be darkened (es.: 5.6).
0÷2
(0)
Decimal point position
If = 0decimal point off (es.: 567).
If = 1 decimal point on 2nd number (es.: 56.7).
If = 2 decimal point on 3rd number (es.: 5.67).
000÷999
(999)
N.B.: in brackets the default setting.
PARAMETERS DESCRIPTION
POSITION Vout
680 10,00V
572 8,41V
340 5,00V
185 2,72V
068 1,00V
1000
Vout = x POSITION
PAR03

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NUMBER VALUE DESCRIPTION
P05 0
(0)
Not used
0÷2
(0)
Reference voltage selection
If = 0external reference (terminal 4).
If = 1 internal reference + 10,00V.
If = 2 internal reference - 10,00V.
0÷1
(0)
Unipolar/bipolar selection
If = 0unipolar.
If = 1 bipolar.
BCD inputs position (only with PTR2300 version)
Enter in the following parameters a number between 000 and 999 that will indicate the position of
the potentiometer that will be selected using the combination of the 3 BCD inputs.
INPUT C
Terminal 12
INPUT B
Terminal 11
INPUT A
Terminal 10
P06 000÷999
(111) OFF OFF ON
P07 000÷999
(222) OFF ON OFF
P08 000÷999
(333) OFF ON ON
P09 000÷999
(444) ON OFF OFF
P10 000÷999
(555) ON OFF ON
P11 000÷999
(666) ON ON OFF
P12 000÷999
(777) ON ON ON
N.B.: in brackets the default setting.
ON
OFF
Provide the input with a positive voltage between 5 and 30Vdc.
Do not connect the input.
N.B.: with every input combination, the potentiometer will position itself on the related value, stora-
ged on the corresponding parameter. This condition prevails on both the + and - buttons and the re-
mote positioning inputs. In this way, no manual change will be possible.

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FUNCTION DIAGRAMS
P05 = 000
Unipolar
External refe-
rence
(terminal 4).
P03 = 999
P03 = 670
P05 = 001
Bipolar
External refe-
rence
(terminal 4).
P03 = 999
P03 = 670
External reference (terminal 4) / Bipolar:
External reference (terminal 4) / Unipolar:
Position
Position

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P05 = 010
Unipolar
Internal refe-
rence +10,00V
P03 = 999
P03 = 670
P05 = 011
Bipolar
Internal referen-
ce +10,00V
P03 = 999
P03 = 670
Internal reference +10,00V / Bipolar:
Internal reference +10,00V / Unipolar:
Position
Position

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P05 = 020
Unipolar
Internal refe-
rence -10,00V
P03 = 999
P03 = 670
P05 = 021
Bipolar
Internal referen-
ce -10,00V
P03 = 999
P03 = 670
Internal reference -10,00V / Bipolar:
Internal reference -10,00V / Unipolar:
Position
Position

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HOW TO USE THE POTENTIOMETER WITHOUT THE ACCESS CODE
If the parameter “P02” (Access Code Setup) is set up with the code “000”, the
programming of the potentiometer will be available for anyone. By pressing “+” the
position will increase, by pressing “-” the position will decrease.
After 5 sec. from the last time the “+” or “-” bottons were pressed, the display will
flash 3 times to indicate that the programmed value was memorized.
The storage of the programmed position is necessary for the device to recover this
value after it was turned off and then turned on again.
HOW TO USE THE POTENTIOMETER WITH THE ACCESS CODE
If the parameter “P02” (Access Code Setup) is set up with any code different
from“000”, the programming with the “+” and “-” buttons and the parameters setting
will be blocked until the access code storaged in “P02” will be entered.
In order to enter the access code, do as follows:
Press “+” or “-”: the code “000” will be displayed. Press “+” to increase the fla-
shing number. Press “-” to pass on to the following number. After the last number,
confirm by pressing “-” and the position of the potentiometer will be displayed again.
If the entered code corresponds to the one storaged in “P02”, it will be possible to
change the position of the potentiometer or proceed to the parameters programming
using the “+” and “-” buttons.
After 5 sec. from the last time the “+” or “-” bottons were pressed, the display will
flash 3 times to indicate that the programmed value was memorized and the access to
the setting and programming is now blocked.
The storage of the programmed position is necessary for the device to recover this
value after it was turned off and then turned on again.

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DIMENSIONS AND PANEL CUT-OUT
15 74 7
48
48 44
44
expressed in mm
FRONT
PANEL
CUT-OUT
SIZE
ERROR MESSAGES
NUMBER DESCRIPTION
E06 The parameter “P06” was set up with a value above that of the full scale, indicated in
the parameter “P03”.
E07 The parameter “P07” was set up with a value above that of the full scale, indicated in
the parameter “P03”.
E08 The parameter “P08” was set up with a value above that of the full scale, indicated in
the parameter “P03”.
E09 The parameter “P09” was set up with a value above that of the full scale, indicated in
the parameter “P03”.
E11 The parameter “P11” was set up with a value above that of the full scale, indicated in
the parameter “P03”.
E10 The parameter “P10” was set up with a value above that of the full scale, indicated in
the parameter “P03”.
E12 The parameter “P12” was set up with a value above that of the full scale, indicated in
the parameter “P03”.

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TERMINAL BLOCKS AND CONNECTIONS
POWER SUPPLY: available in two versions, 20÷30Vac/dc and 85÷265Vac.
ANALOG INPUT AND OUTPUT.
0V
INVERTER
OR
OTHER
DEVICE TO
CONTROL
Vout
Vin
Vin
0V
Vout
SHIELDED CABLE
REMOTE SWITCHES INPUTS:
+15V
+ REMOTE
- REMOTE
N.B.: you can use any DC voltage between 5V and 30V as common of the switches.
BCD POSITION SELECTION INPUTS (only for the PTR2300 version):
PLC
WITH POSITIVE
OUTPUTS
PNP OR PUSH-
PULL
WITH A VOLTAGE
BETWEEN 5 and
N.B.: you can use any DC voltage between 5V and 30V as common of the switches.
PTR2000/2300 - 0 = 85÷265Vac
PTR2000/2300 - 1 = 20÷30Vac/dc

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AITA ELECTRONICS s.a.s. 13823 - STRONA (BIELLA) Via Fontanella Ozino, 17/a
TEL.: [phone] FAX.: [phone] www.aitaelectronics.it email: [email protected]
ALIMENTAZIONE
POWER SUPPLY
0= 85÷265Vac
1= 20÷30Vac/dc
PTR2000
ALIMENTAZIONE
POWER SUPPLY
0= 85÷265Vac
1= 20÷30Vac/dc
PTR2300
HOW TO ORDER