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USB data acquisition modules for use in process control systems
The D8000 USB Data Acquisition modules are a complete family of data acquisition modules for use in process control systems. These modules can measure process signals such as thermocouples, 4-20mA loops, discrete contact closures, and they can generate voltage or current signals for controlling annunciators or valves. Complete data acquisition systems can be created with ease with the D8000 modules and a host supervisory computer.
The modules provide direct connection to a wide variety of sensors and annunciators. They perform all signal conditioning and linearization and contain no pots or DIP switches. All user-selectable settings, such as ranges are stored in nonvolatile EEPROM, which maintains these values even after power is removed.
The D8000 series remote I/O modules are compatible with all commercial software programs and OPC servers that support the Modbus RTU protocol. Commercials software programs from DreamReport, Wonderware, National Instruments Labview, Indusoft, DAQFactory and DASYLab all support the Modbus RTU protocol. OPC Servers from Kepware and MatrikonOPC support the Modbus RTU protocol.
• Build complete data acquisition systems
• Analog and Digital I/O models available
• User-selectable analog input range per channel
• USB communications interface
• Modbus RTU Protocol
• Differential Analog Inputs
• 500Vrms analog input or analog output isolation
• 16-bit analog input measurement resolution
• Continuous self-calibration
• No adjustments required
• Programmable analog input digital filters
• Requires +10V to +30Vdc unregulated supply
• Removable screw terminal plug connectors
• CE marked
D8100 Voltage Inputs | • Seven differential voltage inputs • Ranges: +/- 0.025 V, +/- 0.05 V, +/- 0.1 V, +/- 1 V, +/- 5 V, +/- 10 V • 16-bit ADC, 25/20 conversions per second • Accuracy: +/- 0.05% of FS max. • Span Tempco: +/- 50 ppm/°C max. • Input burnout protection to 250 VAC • Input impedance: 20 MW min. • Power requirements: Serial = 1.4 W |
D8200 Current Inputs | • Seven differential current inputs • Range: +/- 20 mA • 16-bit ADC, 25/20 conversions per second • Accuracy: +/- 0.05% of FS max. • Span Tempco: +/- 50 ppm/°C max. • Voltage drop: 2.0 V max. • Input Impedance: < 100 Ω (70 typical) • Power requirements: Serial = 1.4 W |
D8300 Thermocouple Inputs | • Seven differential thermocouple inputs • Thermocouple types: J, K, T, E, R, S, B, and C • Ranges: - J = -200-760°C R = 0-1750°C - K = -150-1250°C S = 0-1750°C - T = -200-400°C B = 0-1820°C - E = -100-1000°C C = 0-2315°C • Thermocouple Accuracy (error from all sources) from 0-40°C ambient: - J, K, T, E = +/- 1.5°C max. - R, S, B, C = +/- 3.5°C max (300°C to +F.S.) • 16-bit ADC, 25/20 conversions per second • Input impedance: 20 MW min. • Automatic cold junction compensation • Lead resistance effect: < 40 mV per 350 W • Open thermocouple and over range indication • Input burnout protection to 250 VAC • Power requirements: Serial = 1.4 W |
D8400 Voltage, Thermocouple, Current Inputs | • Seven Differential voltage, thermocouple, current inputs • Specifications equal to D8100, D8200 and D8300 series |
D8500 Analog Outputs | • Two analog outputs • Programmable voltage or current ranges • Voltage Ranges: 0-10 VDC, +/- 10 VDC • Current Ranges: 0-20 mA, 4-20 mA • 250 conversions per second • Accuracy: +/ -0.1% • 12-bit DAC resolution • Span Tempco: +/- 25 ppm/°C max. • Settling Time to 0.1% FS: 1 mS • Communications Watchdog Timer • Current Output Compliance: +/- 12 VDC • Voltage Output Drive: 5 mA max. • 8-bit ADC Analog output signal readback • Isolation 500 VAC, output common to system ground • Current output burnout protected to 250 VAC • Power requirements: Serial = 2.1 W |
D8710 Digital Inputs | • 15 Digital Inputs • Internal 10K pull-up resistors on each bit • Accept direct switch closure • Logic “0” = < 1 VDC, Logic “1” = > 3.5 VDC • Input burnout to +/- 30 VDC without damage • Isolation 500 VAC, input common to system ground • Power requirements: Serial = 0.75 W |
D8720 Digital Outputs | • 15 Open-collector outputs to 30 VDC, 100 mA max • VSat: +0.3 VDC max. at 100 mA • Short circuit protection to 500 mA • Communications Watchdog Timer • Digital Output update rate, 4.5 Hz • Isolation 500 VAC, output common to system ground • Power requirements: Serial = 1.0 W |
• Process monitoring and control
• Data logging to any host computer
• Product testing
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