Orbit Controls OC 7040A-POL User manual

7040A-POL_GBM_21002
DIGITAL LINEARIZER
OC 7040A- POL
Owner’s Manual
ORBIT CONTROLS AG
Zürcherstrasse 137
CH-8952 Schlieren/ZH
Tel: + 41 44 730 2753
Fax: + 41 44 730 2783
[email protected]
www.orbitcontrols.ch

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Überzeugen Sie sich, ob Ihre Sendung das richtige Gerät Orbit Controls Modell OC 7040A-POL
beinhaltet, einschliesslich einer Betriebsanleitung OC 7040A-POL.
Vor dem Einschalten des Gerätes überprüfen Sie die Anschlüsse und die Versorgungsspannung. Ein
falsch angeschlossenes Gerät kann beschädigt werden und damit auch die mitverbundene
Folgeelektronik. Für falsche Handhabung wird jede Haftung abgelehnt.
Remove the Packing List and verify that you have received all equipment, including the following:
Orbit Controls Model OC 7040A-POL Programmable Controller.
Operator's Manual OC 7040A-POL.
If you have any questions about the shipment, please call the Orbit Controls Customer Service
Department.
Vor dem Einschalten
Unpacking Instructions
ZU BEACHTEN
Dieses Gerät wurde sorgfältig verpackt. Falls es bei Ihnen in beschädigtem Zustand eintrifft,
benachrichtigen Sie unverzüglich den Orbit Controls Kundendienst (Tel: [phone] oder
Fax: [phone]) und nehmen Sie einen Schadenrapport auf, welchen Sie auch von der
Transportgesellschaft unterschreiben lassen. Bewahren Sie bitte das Verpackungsmaterial für
eventuelle Reklamationen auf.
NOTE
When you receive the shipment, inspect the container and equipment for signs of damage. Note
any evidence of rough handling in transit. Immediately report any damage to the Orbit Controls
customer service, Phone [phone] or Fax [phone] and to the shipping agent.
The carrier will not honor damage claims unless all shipping material is saved for inspection. After
examining and removing contents, save packing material and carton in event the reshipment is
necessary.

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INDEX
Page
PROGRAMMABLE DIGITAL LINEARIZER OC7040-POL 4
1 SPECIFICATIONS 6
2TERMINALS 7
2.1 Rear Panel 7
2.2 Option Card 7
2.3 Serial Ports RS232 and RS485 8
2.4 Analogue Outputs 8
2.5RelayOutputs 8
3 KEYBOARD 9
4 ASSIGNEMENT of the INPUT SIGNAL to DISPLAY 9
5MENUSTEPS 10
6 POLYNOM-LINEARIZING 12
7CALIBRATION 13
7.1 Calibration of linear Signals DC and AC 13
7.2 Calibration of non-linear Signals 13
7.2.1 Calibration of Pt-100 Thermometers 13
7.2.2 Calibration of Thermocouples 13
7.3 Calculation of R19 13
7.4 Selection of Measuring Range 14
7.5 Selection of Mains Volateg 115/230VAC 15
8EXAMPLES 16
8.1 Process Signals 0/4-20mA 16
8.2 Two Terminals Sensor 16
8.3 RTD Thermometer and Ohmmeter 16
8.4 Thermocouples and Thermistors 16
8.5 Differential Inputs 16
8.6 Strain Gauges 16
9 SERVICE MENU – HTEST 17
10 BURST TEST and RECOMENDED GROUNDING 18

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PROGRAMMABLE DIGITAL LINEARIZER
OC 7040A - POL
6 Digit Display ±999999
 ±100 000 Measuring Increments
Input 4-20mA, 0-1V, 0-10V
Strain Gauge 20mV
Polynom 6the Degree
 Free programmable
Four Set Point Relays
RS 232 and RS 485
 Isolated Excitation
Output 0/4-20mA, 0-10V
OC7040A-POL is a programmable 6 digit instrument with inputs for process signals such as 0-20mA, 4-
20mA, 0-1V, 0-10V, -1V...+1V und -10V...+10VDC and 20mV Strain Gauge Applications. The display
can be scaled in required process units like kg, gr, lb, kN etc. Isolated excitation is available for supplying
of external sensors. Output options Set Points, Analogue Outputs and Serial Data Ports are suitable for
control applications.
The instrument can be used for measuring of linear and non-linear signals. The non-linear signals can be
linearized with a polynom of sixth degree.
Linear Signals can easily be calibrated with the keyboard to the desired display values. The Minimum
and the Maximum of the input signal will be assigned to the Minimum and the Maximum of the display
reading, such as 4 - 20mA at the input will appear at the display as 0 - 25000.
Linearizing with a Polynom sixth degree uses 6 digit Coefficients with decimal point and sign and
Exponents settable between 0 and ±24.
The Menu of the instrument can be entered with the keyboard or serial data port and contains four Set
Points with hysteresis, selection of the Input Range, Linearizing functions, Filter, Tara, two Analogue
Outputs, Sampling Rate, Display Count and Serial Data Ports.

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Four Set Points can be set within the entire display range 0…±999999. They activate four output
transistors or four mechanical Relays. The hysteresis can be individually programmed.
Input is designed for signals 0 ... ±1V, 0 ... ±10 V or 0/4-20mA. For Strain Gauge applications a
programmable range is also available.
Linearizing with a Polynom of 6th degree can be activated in the menu. The polynom is of 6th degree
with 6 digit Coefficients with decimal point and sign and Exponents programmable from 0 and ±24.
Digital Filter with averaging function has selectable constants from 1 to 99. The filter can be deactivated
in the menu.
Tara can be selected in the menu and activated with the keyboard. The Tara remains stored also when
the instrument is switched-off from the supply. The Tara can easily be set with the key SET forcing the
display to zero. When the key SET is pressed for a second time, the display returns to show the non-
Tara signal.
Analogue Outputs 0 ... ±10V and 0/4-20mA are generated simultaneously and can be assigned with
the keyboard to any two desired display values.
Sampling Rate is selectable from 1 to 30. The selected value determines the number of measurements
after which the display will be refreshed with new information. By selection of 1 the display will be
refreshed 15 times per second.
LSD Count can be set for 1, 2, 5 or 0. These numbers correspond to the reading of the Last Significant
Digit of the display. When 1 is selected, the LSD reads all numbers between 0 and 9. When 2 is
selected, the LSD reads only even numbers. With 5 the LSD reads 0, 5, 0, 5… When 0 is selected, the
LSD displays dummy zero.
Peak Memory can be used for displaying of the Maximum and the Minimum display reading during the
determined measuring period. With the keyboard the values can be recalled at the display or erased
upon demand.
Two Serial ports RS232 and RS485 are optionally available. The RS485 data port has a programmable
address which permits the instrument to operate on an addressable data bus.

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1 SPECIFICATIONS
Display: 0 ... ±999999, 7 segment red LED, 14.7mm with decimal points.
Input: The input is configured upon the customer order for DC or AC voltage or current,
RTD or Thermocouples, Potentiometers, Resistors or Strain Gauge.
Voltage ±100mV to 300V DC or true RMS.
20mVDC for Strain Gauges
Current 0/4-20mA, ±20mA to 5A DC or true RMS.
Pt-100/200 2 or 4 wire termination. Range -200...+650°C according to PT385.
OHM 10Ω-100k Ω, 2 or 4 terminals
T/C E, J, K, S, B, C, T according to DIN.
Cold Junction compensation 0 - 60°C at the terminals.
Thermistors 96255Ω@ 0ºC, 2034Ω @ 100ºC
ADC: 19 Bit, bipolar, Sampling Rate 63ms.
Integral Nonlinearity: ±0.006% from range
Zero Error: ±0.0168% from range
Rollover Error: ±0.032% from range
Tempco: ±10ppm°C
Linearity: ±(1 LSB + 1 Digit).
Accuracy DC Ranges ±(0.01% from value + 2 digits)
True RMS 50Hz - 5kHz: ±(0.1% from value + 2 digits).
Pt-100 und T/C Pt-100/200: ±(1°C+1 digit)
T/C, Thermis: ±(2°C+1 digit)
Tempco: ±25 ppm/ °C.
Set Points: Standard: Mechanical Relays SP1, SP2, rated for 5A-230VAC
Option: Additional two Relays SP3, SP4 rated for 5A-230VAC
All programmable within the entire display range ±999999.
Each Set point has an individual hysteresis selectable between 0 and 99.
Analogue Output:Option: Analogue Outputs 0/4-20mA and 0...±10V with 12 bit resolution (Option 16 bit).
Isolation 250V RMS.
Data Ports: Option: RS232 and RS485 with address 01-31, 8 bit, 1 start, 1 stop, no parity.
Baud rate 600 … 19200 bd, isolation 250V RMS.
RS232: continuous or request transmission is selectable.
Continuous: Terminal P (RSI) to be wired to +5V in respect to N (GND).
Request: Terminals P (RSI), R (RSO) and N (GND) to be connected with the
D-SUB of the PC with terminals 2, 3 and 5 - page 7.
The data are requested with <CR> <LF> (ENTER).
Excitation: Isolated supply for external sensors adjustable from 5 to 24V/40mA.
Current Out: 1mA constant current source for RTD and Resistor measurements
Supply: 115V / 230V ±10%, 48-60 Hz. Option 9-36VDC-4W.
Cabinet: DIN 48x96x100 mm (H x B x T), Panel Cut-Out 45 x 90 mm. Coverage: IP65 at the front
Terminals: Pluggable screw terminals

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2 TERMINALS
2.1 REAR Panel of the instrument
RS232 – Request Transmission
RS232 – Continuous Transmission
2.2 Option Card
Two analogy outputs, two serial data ports and four set point relays are optionally available. The option
card is placed in the upper part of the cabinet. The card contains two analogy outputs 4-20mA and -
10…+10V and two data ports RS232 and RS485. Potentiometers P1, P2, P3, P4 are intended fort he
calibration, which is described in the Service Menu - HTEST (§ 10).

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2.3 Serial Ports RS232 and RS485
The Baud Rate can be set in the menu Step bAUd with keys UP or DOWN, the address in rS Adr.
The address 00 automatically activates RS232.
One of addresses 01 ... 31 activates RS485.
Data Format: 8 bit, No Parity, 1 Start und 1 Stop, Baud Rate 1200 to 19200.
The terminals are L, M (RS485) and N, P, R (RS232) at the rear of the instrument.
RS232: continuous or request transmission is selectable.
Continuous: Terminal P (RSI) to be wired to +5V in respect to N (GND).
Request: Terminals P (RSI), R (RSO) and N (GND) to be connected with the
D-SUB of the PC with terminals 2, 3 and 5 - page 7.
The data are requested with <CR> <LF> (ENTER).
In the Request Mode the PC sends two bytes. The first byte is the address, the second is D. The
instrument answers with data string terminated with <CR> <LF>. The address consist of a number 128 +
the address selected in the instrument (1 … 31). For an instrument with address 1 the first byte will be
129 (128 + 1). The second byte Dis 44H = 68D.
2.4 Analogy Outputs
Two Analogy Outputs -10V ... +10V and 0/4 ... 20mA are generated simultaneously. They can be
assigned with the keyboard to any two display values.
The required display reading for the analogue output -10V and 0/4mA will be set in the menu step
Aout L. The reading for +10V and 20mA will be set in the menu step Aout H.
2.5 Relay Outputs
Four Set Point SP! … SP4 activate four transistor outputs or four mechanical relays. Each Set Point has
a programmable Hysteresis and Function. The parameters can be set in Menu Steps SP 1, HSt 1, FnrL1
to SP 4, HSt 4, FnrL4. The function FnrL1 to FnrL4 permits the Set Point to be activated or deactivated
in the alarm condition (Open or Closed).

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3 KEYBOARD
The key MENU opens the menu. The required parameter will be confirmed with ACK and set with UP or
DOWN. The flashing digit - Cursor - can be positioned with ACK. The sign and the decimal point can be
set when the cursor is moved out of the display range and no digit is flashing. The decimal point can be
set with UP the sign with DOWN.
The programming is terminated with SET and the display returns to measuring mode.
4 ASSIGNEMENT of the INPUT SIGNAL to DISPLAY
Linear Signals will be assigned in menu Steps SEt LO and SEt HI to required display readings.
The low value of the input signal will be assigned in SEt LO to the minimum
display reading. The maximum input signal value will be assigned in SEt HI
for the required maximum display reading.
Non-linear Signals which are described with a polynom, have the SEt HI and SEt Lo values
calculated from the polynom – see POLYNOM LINEARIZING (§ 6).
MENU
ACK
UP
DOWN
SET
1,2,3,4 activated Set Points
P Program Mode

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5MENU STEPS
The text bellow shows the full menu with all options installed. If one or more options are not installed, the
corresponding menu Step is suppressed in the menu. The key MENU permits the entry into the menu
and scrolling the parameters at the display. The required menu step will be confirmed with ACK. The
Cursor (flashing digit) can be moved with ACK and set with UP or DOWN to required value.
Key Display Function
MENU OrdEr Display resolution, active decimal point
ACK CCCC.dd Select with UP or DOWN
MENU Fn tArA Activation of Tara-Function:
ACK ONLY after pressing the key SET the display will reset to zero
ON pressing SET for first time the display resets to zero. The display returns to
follow the non tara signal when SET pressed for second time.
OFF Tara deactivated
MENU FiltEr Filter constant (averaging filter type):
ACK OFF Selection: OFF and 1, 2….99
MENU Count Count of the LSD:
ACK 0 Dummy Zero
1 All increments 1, 2, 3….9, 0
2 Even numbers only 2, 4, 6…
5 Increments 0, 5, 0, 5… only
MENU dSP Refresh of the display reading:
ACK 1 Selection from 1, 2 …. 50
MENU SP 1 Set Point SP1
ACK XXXXXX Selection: -999999 to 999999. The SP1 will be activated when the display
arrives at the set point or is larger than the set point value selected.
MENU HSt 1 Hysteresis SP1
ACK XXXXXX Selection: -999999 to 999999
MENU FnrL1 Function of the SP1
ACK OPEN Selection between OPEN and CLOSE when the Set Point is activated
Same menu Steps for the Set Point SP2, SP2 and SP4