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3

Insert the two printed cards into their slots.
Connect the flat cable between them.
Connect the front panel flat cables. The
panel must be inserted into the grooves on
both sides of the case while pressing down
until a distinct "click" is heard. Assembly is
completed by laying the terminal strips in
place.

Note: The terminal strips are  polarized and must not be placed backwards.

5. CURRENT INPUTS

The eight 4-20mA current inputs are marked as channels 9-16. These inputs are
for current only. The "COM" input is the return for all the current channels. It is
possible to connect any current source, as long as a closed loop is maintained.

Figure 1.

6. CONNECTING  TRANSMITTERS TO THE MULTIPLEXER

6.1  TWO WIRE TRANSMITTER

A Two-Wire transmitter is connected so that its
positive terminal is connected to the positive
terminal of the power supply, and its negative
terminal is connected to the "I" terminal.
(see fig 2)

Figure 2.

6.2  FOUR WIRE TRANSMITTER

A Four-Wire transmitter is connected so that its
positive terminal is connected to the "I" terminal,
and its negative terminal is connected to the
"COM" terminal. (see fig 3)

Figure 3.

WARNING:  Voltage sources should not be connected to the current
                        inputs,as permanent damage might occur.

Содержание DRA-RTM-8

Страница 1: ...DRA RTM 8 ANALOG MULTIPLEXER User sGuide http www omega com e mail info omega com...

Страница 2: ...02 Certified Broughton Astley Leicestershire Irlam Manchester LE9 6TU England M44 5EX England Tel 44 1455 285520 Tel 44 161 777 6611 FAX 44 1455 283912 FAX 44 161 777 6622 Toll Free in England 0800 48...

Страница 3: ...XER 7 CONNECTING Pt 100 TO THE MULTIPLEXER 8 CONNECTING THE MULTIPLEXER TO A PLC 9 CONTROL 9 1 Enable 9 2 Address 9 3 Address Polarity 9 4 Control Tables 10 CALIBRATION 10 1 Calibration Procedure 10 2...

Страница 4: ...e fastening tab facing down Using a suitable flat screwdriver loosen the tab slightly and attach the unit to the rail Once the tab is loosened ensure that the unit is fastened securely in place 3 REPL...

Страница 5: ...e return for all the current channels It is possible to connect any current source as long as a closed loop is maintained Figure 1 6 CONNECTING TRANSMITTERS TO THE MULTIPLEXER 6 1 TWO WIRE TRANSMITTER...

Страница 6: ...e transmitter connection WARNING NEVER apply 24Vdc to the DRA RTM 8 s Io terminal as in two wire connection and make sure that the PLC s analog module is configured as a passive input 9 CONTROL The DR...

Страница 7: ...1 and 1111 selects channel 16 Moving the jumper to the second alternative reverses the logic Figure 6 Note If the address contros voltages are generated from different power supplies then its negativ...

Страница 8: ...temperature at which the output current is 20mA Tspan is the difference between Tmax and Tmin 10 1 CALIBRATION PROCEDURE a Remove the terminal strips to get access to the coarse calibration switches...

Страница 9: ...206 205 272 270 338 336 404 401 470 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 CHANNELS 5 8 SW2 SW3 SW1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 10 2 2 SPAN COARSE CALIBRATION TABLES SPAN...

Страница 10: ...rent Input CONTROL INPUTS Logic Logic Levels OUTPUT SWITCHING TIME INDICATORS SUPPLY VOLTAGE SUPPLY CURRENT CONSUMPTION FUSE TEMPERATURE STABILITY OPERATING TEMPERATURE STORAGE TEMPERATURE HUMIDITY HO...

Страница 11: ...EGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to...

Страница 12: ...Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial pH Conductivity Equipm...

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