Instruction/ maintenance manual of the product DRA-RTM-8 Omega
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DRA-RTM-8 ANALOG MUL TIPLEXER User’s Guide http://www .omega.com e-mail: info@omega.com.
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C o n t e n t s 1. GENERAL DESCRIPTION 2. MOUNTING INSTRUCTIONS 3. REPLACING FUSES 4. ASSEMBL Y 5. CURRENT INPUTS 6. CONNECTING TRANSMITTERS TO THE MUL TIPLEXER 7. CONNECTING Pt-100 TO THE MUL TIPLEXER 8. CONNECTING THE MUL TIPLEXER TO A PLC 9. CONTROL 9.
1. GENERAL DESCRIPTION 2 W ARNING: Never install a fuse rated more than 800mA The DRA-R TM-8 is a multiplexer for 16 analog inputs - eight of which, marked 1-8, are direct inputs for Pt-100 sensors, while the remaining (9-16), are for 4- 20mA current loops.
3 Inser t the two printed cards into their slots. Connect the flat cable between them. Connect the front panel flat cables. The panel must be inser ted into the grooves on both sides of the case while pressing down until a distinct "click" is heard.
4 Figure 4. 7. CONNECTING Pt-100 TO THE MUL TIPLEXER The Pt-100 probe should be connected according to fig 4. The three wires connecting the probe should be identical. The distance of the probe can be up to 200 meters. A shielded cable is recommended.
5 9.2 ADDRESS The required channel is selected by four address lines. The operating voltages are: Logical "1" 5V < V i < 60V Logical "0" 0V < Vi< 0.
6 ADDRESS BUS E/T OUTPUT CHANNEL A0 A1 A2 A3 1 1 1 1 1 0 0 0 0 1 0 0 1 1 0 0 1 0 1 0 1 1 1 1 1 9 10 11 12 13 1 1 1 x 1 1 1 x 0 1 1 x 1 0 1 x 1 1 1 0 14 15 16 TEST MODE ADDRESS BUS E/T OUTPUT CHANNEL A0 A1 A2 A3 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 1 0 1 0 1 1 1 1 1 1 2 3 4 5 0 0 0 x 1 1 1 x 0 1 1 x 1 0 1 x 1 1 1 0 6 7 8 TEST MODE 9.
7 * The calibrator is set according to DIN 43760 Pt-100 table ( a = 0.00385) 10.2 CALIBRA TION T ABLES Note: Logic state of "0" is when the DIP switch lever is down. 10.2.1 "ZERO" - COARSE CALIBRA TION T ABLES ZERO TEMP O C CHANNELS 1-4 SW5 SW4 SW6 -50.
8 12. SPECIFICA TIONS 11. MUL TIDROP CONFIGURA TION In the disabled state (E=0), the multiplexer outputs no current and exhibits a high Z state. This mode allows the connection of several DRA-R TM-8 u.
RETURN REQUESTS / INQUIRIES Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBT AIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SER VICE DEP ARTMENT (IN ORDER TO A VOID PROCESSING DELA YS).
Where Do I Find Ever ything I Need for Pr ocess Measurement and Control? OMEGA…Of Course! TEMPERA TURE ⻬ Thermocouple, R TD & Thermistor Probes, Connectors, Panels & Assemblies ⻬ W ire: .
An important point after buying a device Omega DRA-RTM-8 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Omega DRA-RTM-8 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Omega DRA-RTM-8 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Omega DRA-RTM-8 you will learn all the available features of the product, as well as information on its operation. The information that you get Omega DRA-RTM-8 will certainly help you make a decision on the purchase.
If you already are a holder of Omega DRA-RTM-8, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Omega DRA-RTM-8.
However, one of the most important roles played by the user manual is to help in solving problems with Omega DRA-RTM-8. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Omega DRA-RTM-8 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
