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  9. TEDIA OPT-1020 User manual

TEDIA OPT-1020 User manual

General description
The OPT-1020 and OPT-1120 daughter boards provide the analog input signal
isolation for the DAQ cards.
OPT-1020 bandwidth 20kHz, isolation voltage 2.5 kV, screw terminals
OPT-1020B bandwidth 20kHz, isolation voltage 2.5 kV, BNC connector
OPT-1120 bandwidth 120kHz, isolation voltage 1.5 kV, screw terminals
OPT-1120B bandwidth 120kHz, isolation voltage 1.5 kV, BNC connector
If the DAQ card provides the 12V power supply voltages, the OPT-1020/1120 board
can be powered from the card; if not, external power supply must be used.
One OPT-1x20 board can be connected to the DAQ card using the CAB-2604C flat
cable and CAB-2511/2 shielded cable. If multiple OPT-1x20 boards are used, an
interconnection cables CAB-1004C and CAB-2604C (up to four boards), or
CAB-1008C and CAB-2608C (up to eight boards) are required (not included).
Entire set of boards can be connected to the DAQ cards via CAB-2511/2. Please pay
attention to the maximum current capacity of the DAQ cards power supply output,
for higher number of OPT-1x20 boards it is necessary to use external power supply.
General instructions for use
The OPT-1x20 boards is designed for DAQ&C applications and may be used only
according to the manufacturer's recommendations and precautions given in this
manual and other general standards and terms and may be used only such a way,
that its failure caused by any reason will not be dangerous to any person or property.
Installation
The OPT-1x20 boards is supplied as an unencapsulated kit intended for fastening
via three screws.
The board can be used in an environment with operating temperature -10~60 °C and
relative humidity up to 90%, noncondensing and normal levels of pollution.
Specifications
Input voltage (for processing): ±11 V max.
Overvoltage protection: ±24 V
Input impedance: 1 MOhm (±1 %)
Selectable gain: 1x, 10x (via on-board jumper)
Bandwidth (-3 dB, signal 7 VAC): 0÷20 kHz typ. (all OPT-1020 version)
0÷120 kHz typ. (all OPT-1120 version)
Nonlinearity: ±0,05% max. (±0,025 typ.)
Isolation voltage (see note below): 2.5 kVAC / 3.5 kVDC (OPT-1020H only)
1.5 kVAC / 2 kVDC (all other version)
Power supply: +10.8~12.6 VDC (240 mA max.)
Recommended cable length: 2 m max.
Dimensions of board: 102 x 49 mm
Mounting hole spacing: 94 x 42 mm
Mounting hole diameter: 3.5 mm
Note: "AC" indicates the rms value of a 50 Hz AC harmonic signal.
Configuration jumpers
JP1 jumper for input range configuration, resp. gain of input amplifier
JP2 jumper for configuration of OPT-1x20 output signal routing to the DAQ card
input (only one OPT-1x20 board can be connected to the card input)
JP3/4 jumpers for selecting of power supply (see picture above)
P1 potentiometer for precise gain adjustment
P2 potentiometer for precise offset adjustment
Pin assigment of connector PFL26 (J3), resp. cable CAB-2511 to the DAQ card
PFL26 D-Sub 25 signal PFL26 D-Sub 25 signal
1 - - - AGND 2 13 AGND
3 25 AIN0 4 12 AGND
5 24 AIN1 6 11 AGND
7 23 AIN2 8 10 AGND
9 22 AIN3 10 9 AGND
11 21 AIN4 12 8 AGND
13 20 AIN5 14 7 AGND
15 19 AIN6 16 6 AGND
17 18 AIN7 18 5 AGND
19 17 - - - 20 4 - - -
21 16 - - - 22 3 - - -
23 15 GND (power supply) 24 2 GND (power supply)
25 14 +12V (from card) 26 1 reserved
Pin assigment of connector PFL10 (J4)
PFL10 signal
1, 2, 3, 4 power supply 12V (+5%, -10%), positive signal
5, 6 unused
7, 8, 9, 10 power supply 12V (+5%, -10%), negative signal
Jumpers JP3/JP4 must be removed before connecting an external power supply.
JP1
AIN7 . . . . AIN0
J3
J1
J4
JP2JP3/JP4
gain 1x
P1P2
+IN
-IN
pin 1 pin 1
gain 10x
power supply from DAQ card
power supply from an external
source via J4 connector
DAQ card input selection
Fig. 1. Simplified schematic of OPT-1x20 internal circuits.
As you can find out from the schematic...
• the analog input can be equipped with a current shunt, or the input impedance
can be reduced by replacing R1 (a resistor with value of 1 MOhm and tolerance
of 1% is fitted at the factory);
• the input amplifier is equipped with positions for two dividers determining the
gain; the first is reserved for users and the factory setting is 1x amplification
(i.e. a resistor with value of 0 Ohm is fitted in position R5 and position R6 is left
free), the second is factory fitted with a divider for 10x gain (18K and 2K
resistors with a tolerance of 0.1%);
• after changing the range (i.e. relocating the JP1 jumper position) it is
recommended to re-compensate the offset and calibrate the gain (see the meaning
of potentiometers P1 and P2).
Warning: The manufacturer is not liable for damage to the OPT-1x20 board or
other damage caused by additional installation or change of components.
to the DAQ card
input
gain
adjustment
1x
offset
P1 P2
1M0
- - -
R5
0R
2K0
18K
R7
R6
R8
R1
isolation
10x
1x
adjustment
range configuration
JP1
Manufacturing, sales office, service center and technical support:
TEDIA spol. s r. o.
Zabelska 12, 31200 Plzen, Czech Republic
phone/e-mail: https://www.tedia.eu/contacts
address:
OPT-1020/1120
User Guide
(further information available at http://www.tedia.eu)
document revision: 02.2013, © 1994-2013 TEDIA®spol. s r. o.

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