Table of Contents
Summary of Contents for Omega iDRX-ACC
- Page 1 User’ s Guide Shop on line at ® omega.com ® e-mail: info@omega.com For Latest Product Manuals omegamanual.info iDRX-ACC, iDRX-ACV, iDRX-FP, iDRX-PR, iDRX-RTD, iDRX-ST, iDRX-TC Communication Manual for iDRX Signal Conditioner Series...
- Page 2 OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the mark to every appropriate device upon certification. The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
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Page 3: Table Of Contents
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Page 4: Safety Considerations
SAFETY CONSIDERATIONS This device is marked with the international Caution symbol. It is important to read this manual before installing or commissioning this device as it contains important information relating to Safety and EMC (Electromagnetic Compatibility). Unpacking & Inspection Unpack the instrument and inspect for obvious shipping damage. Do not attempt to operate the unit if damage is found. -
Page 5: What Signal Conditioners Do
AC VOLT ( iDRX-ACV ) AC CURRENT ( iDRX-ACC ) III. RS485 SERIAL COMMUNICATION SETUP: Communication with the UNIT will be performed via serial communication using RS485 standard (half duplex). To use the RS485 communication for the Signal Conditioners you’ll need an available Communication port in your computer and have access to a generic communication software program (e.g.: Procomm... - Page 6 Start the Procomm Program. For Procomm: Press ALT + P (Select the appropriate communication parameters: Baud Rate, Parity, Data Bits, Stop Bits.) The default settings may require modifications. - Factory Default communication settings are as follows: Baud Rate = 9600 Parity = Odd Data Bits = 7 Stop Bits = 1...
- Page 7 Communication Parameter Settings: Communication settings information are very critical during set-up, if any of the parameters are changed, it should be recorded on the label for future reference. If the communication parameters used by the computer does not match the communication parameter of the iDRX, then the communication link may not be established.
- Page 8 Open the Signal Conditioner Unit Disconnect all signal input and outputs before attempting this procedure. 1) To open the Signal Conditioner Unit—Remove Side Covers from Unit by removing 4 screws, using Instructions a Phillips head screwdriver. 2) Short TP6 & TP17 together, either by wire or, if available, jumper S1-A. 3) After shorting TP6 to TP17, apply power to the unit.
- Page 9 To read the default communication parameters, type the following command using HyperTerminal or some other terminal communication program. ^AE01 The unit will respond with the following ASCII characters depending on the model of iDRX unit. PR/FP/ST TC/RTD/ACV/ACC 2A011C0D 2A01140D The ASCII response is decoded below: 2A = Recognition Character = * 01 = Unit Address = 01 1C = Command Mode, Multipoint Address, Echo ON, Checksum OFF, Line Feed OFF...
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Page 10: Commands For Accessing Eeprom
COMMANDS FOR ACCESSING EEPROM: command letter index meaning # of bytes Input range or function Input/output Configuration Decimal point Filter time constant Reading Scale Reading Offset Communication parameters Communication bus format Communication Data format Communication device address1 Communication recog. char. Unit of measure Gate time Debounce time... - Page 11 If unit is not in echo mode : i. For the commands which require the data to be transmitted by the iDRX Signal Conditioner, data is sent in the following formats: data[hh]<cr> ii. For the commands which do not require the data: NO RESPONSE Error response: 1.
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Page 12: Description Of Data
Special code indicating an error has occurred as: Command error ( occurs if command letters and indexes are invalid) Format error ( occurs if length of the data or number of characters is not correct ) Checksum error ( occurs if checksum is not correct ) Parity error ( occurs if parity is not correct ) Carriage return... - Page 13 b. INPUT RANGE BIT NO. VALUE Bits: 100 ohms 500 ohms 1000 ohms not used PLATINUM NICKEL DIN STANDARD NIST FOR Pt (SAMA FOR Ni) 2 wire 3 wire 4 wire not used not used Line frequency = 60Hz Line frequency = 50Hz c.
- Page 14 ---- d. INPUT RANGE BIT NO. VALUE FREQUENCY/PULSE (FP) Low input level ---- Debounce contact ---- 3K pull up to 5V ---- 1K pull down 12.5V excit. 5V excit. 8V excit. not used Disable Reading Scale and Offset Enable Reading Scale and Offset not used This is one byte data (2 characters).
- Page 15 Bit 3 Bit 2 Time to reach regular reading 1 minute 1 hour 1 day 30 day 3. DECIMAL POINT : This is one byte (2 characters) as: XXXXXX. value meaning XXXXX.X XXXX.XX XXX.XXX XX.XXXX X.XXXXX For TC and RTD models, value must be 1 to 3 only. Note 1: 4.
- Page 16 5. ANALOG OUTPUT / READING SCALE: Multiplication factor applied to input to get a higher or lower reading. This is 3 byte data (6 characters) as follows: - Bits 0 to 18 (19 bits) are value of the scale from 0 to 500000 - Bit 19 is sign, 0 for positive and 1 for negative - Bits 20 to 23 are for decimal point value = DP It means as:...
- Page 17 7. COMMUNICATION PARAMETERS: This is one byte data and specifies BAUD, PARITY, DATA, and STOP bit. BAUD = bits 2,1,0 are: 000-001 not used for 1200 for 2400 for 4800 for 9600 for 19200 not used PARITY = bits 4,3 and are: for NO for ODD for EVEN...
- Page 18 9. DATA FORMAT: This is one byte and specifies the data which will be transmitted against the "V01" command. Bit pattern: bit 0 = 0/1 Means do not include/include peak & valley status register. bit 1 = 0/1 Means do not include/include reading. bit 2 = 0/1 Means do not include/include peak reading.
- Page 19 11. RECOGNITION CHARACTER: This is one byte security character. (Default is *) 12. UNIT OF MEASURE: This is 3 bytes. It is ASCII value of unit of measure. 13. GATE TIME(For FP model only): This is 1 byte from 00 to FF. Each count equals 10ms.
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Page 20: Commands For Measurement Values
COMMANDS FOR MEASUREMENT VALUES: Command Receiving value Reading value. After reading scale and offset. *01X01 (For all models): In order to have continuous update on reading. Customer should send X01 command every time reading is requested. Note: Peak reading value. Models(TC/RTD/ACV/ACC): Valley reading. -
Page 21: Reset Commands
VIII. RESET COMMANDS : *01Z01 (For all models): Hard reset (reading data from EEPROM). *01Z02 (For all models): Soft reset (Initialize reading). *01Z03 (For models: TC/RTD/ACV/ACC): Reset peak and valley. (For models: PR/ST): Reset process totalize value. *01Z04 (For models: (PR/ST/FP): Reset peak value. *01Z05 (For models: PR/ST/FP): Reset valley value. -
Page 22: Sample Program
SAMPLE PROGRAM: ' ASSUMING : ' BAUD RATE = 9600 ' PARITY = ODD ' DATA BIT ' STOP BIT ' COMM PORT = 1 ' ADDRESS = 01 ' RECOG. CHAR = * ' SERIAL PORT = COM1 ' FOR COMM PORT = 2 -> CHANGE "COM1:"... - Page 23 LOOP UNTIL CNT = 1 OR INSTR(1, DAT$, CHR$(13)) > 0 IF DAT$ = "" THEN LOCATE 5, 30 COLOR 28 PRINT "COMMUNICATION ERROR!" P = 1 ELSE IF P = 1 THEN LOCATE 15, 30 COLOR 7, 0 PRINT " "...
- Page 24 Modbus Register Definition for iDRX-FP, iDRX-PR, and iDRX-ST Input Range Input Range Reg. # Read Function Write Function # of byte Input/Output Config. Input/Output Conf. Decimal Point Decimal Point Filter Time Constant Filter Time Constant Reading/Output Scale Not supported Reading/Output Offset Not supported Comm.
- Page 25 Modbus Register Definition for iDRX-ACC, iDRX-ACV, iDRX-RTD, and iDRX-TC Input Range Input Range Reg. # Read Function Write Function # of byte Input/Output Config. Input/Output Conf. Decimal Point Decimal Point Filter Time Constant Filter Time Constant Reading/Output Scale Not supported...
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Page 26: Idrx-Acc
2.4 Watts (100 mA at 24 Vdc) iDRX-ACC SPECIFICATIONS POWER CONSUMPTION: 10 mA, 100 mA, 1 Amp, 5 Amp AC current INPUT RANGES: -5 to +55 °C OPERATING AMBIENT: Dedicated input terminals for (10, 100 mA same input), 1 Amp and 5 Amp. Return terminal common to all ranges. -
Page 27: Idrx-Acv
-5 to +55 °C iDRX-ACV SPECIFICATIONS OPERATING AMBIENT: 400 mV, 4V, 40 Volt, 400 Volt INPUT RANGES: -40 to +85 °C STORAGE TEMPERATURE: 30 Hz to 1 KHz FREQUENCY RANGE: 90% at 40 °C non-condensing RELATIVE HUMIDITY: 2.1 Meg for all ranges. INPUT IMPEDANCE: Dielectric strength per 1 minute test based on ISOLATION:... -
Page 28: Idrx-Fp
iDRX-FP SPECIFICATIONS Range= -99999 to 999999*, if reading is larger than Quadrature (Reset input used as second input): 999999, then reading is converted to floating point number, INPUT TYPE: Min. Low level signal input (magnetic i.e. -9.99E9 (minimum), 9.99E9 (maximum). 120mV pickups) : From 0 mV to 120 mV Max. - Page 29 iDRX-FP SPECIFICATIONS (continued) Example: Connecting different signal sources Excitation Excitation 1 2 3 4 Quadrature Quadrature Encoder Encoder Quadrature Mode 1 2 3 4 1 2 3 4 Totalize (A-B) Mode 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Page 25...
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Page 30: Idrx-Pr
-5 to +55 °C iDRX-PR SPECIFICATIONS OPERATING AMBIENT: ±20mA; ±400mV, ±1V, ±2V, ±5V, and ±10V INPUT RANGES: -40 to +85 °C STORAGE TEMPERATURE: Ratiometric or nonratiometric 90% at 40 °C non-condensing RELATIVE HUMIDITY: 14V or 10V @ 25mA EXCITATION: Voltage Range: 1MΩ INPUT IMPEDANCE: Current Range: 10Ω... -
Page 31: Idrx-St
iDRX-ST SPECIFICATIONS ±30mV/ ±100mV INPUT RANGE: Ratiometric or nonratiometric 10V @ 30mA or external EXCITATION: More than 1MΩ INPUT IMPEDANCE: Dielectric strength per 1 minute test based on ISOLATION: EN 61010 for 50 Vdc or Vrms working voltage. Three way Isolation: •... -
Page 32: Idrx-Rtd
iDRX-RTD SPECIFICATIONS 100, 500, 1000 Ohm platinum RTD with both European SPECIFICATIONS: (alpha=0.00385) and American (alpha=0.00392) curves. 100 Ohm -328 to 1562 °F -200 to 850 °C Input Type: 500 Ohm -328 to 1562 °F -200 to 850 °C 1000 Ohm -328 to 1562 °F -200 to 850 °C Dielectric strength per 1 minute test based on ISOLATION:... -
Page 33: Idrx-Tc
-5 to +55 °C iDRX-TC SPECIFICATIONS OPERATING AMBIENT: Type J,K,T,E,R,S,B,N, J DIN INPUT TYPE: -40 to +85 °C STORAGE TEMPERATURE: Input Type Range °F Range °C -346 to 1400°F -210 to 760 °C 90% at 40 °C non-condensing -454 to 2500°F -270 to 1372 °C RELATIVE HUMIDITY: -454 to 752 °F... -
Page 34: Dimensions
DIMENSIONS: TYPICAL COMPUTER SETUP: RJ12 CONNECTOR with CABLE COMPUTER CONNECTION (DB9 or DB25) RS-232 to RS-485 CONVERTER HALF-DUPLEX #CAT-285 COMPUTER POWER ADAPTOR (DB9/25 to RJ12) CONNECTION #DB9-RJ12, #DB25-RJ12 Page 30... - Page 35 Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, 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 mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification.
- Page 36 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop on line at omega.com TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors...