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RDAG12-8(H) Remote Analog Output
Digital I/O Pod

 

Features

rdag12-8
  • Remote intelligent analog output and digital I/O units with opto-isolated RS-485 serial interface to host computer
  • Eight 12-bit analog current (4-20mA) and voltage outputs <
  • Software selectable voltage ranges of 0-5V, 0-10V, ±5V
  • Seven bits of digital I/O configured on a bit-by-bit basis as either inputs or high-current outputs.
  • Field connections accomplished via 50-pin removable screw terminals.
  • Onboard 16-bit 8031 compatible microcontroller with 32K SRAM and EEPROM
  • Watchdog circuit for reset on power-up and microprocessor failure
  • Protective metal T-Box for high-power model (RDAG12-8H)
  • Protective NEMA4 enclosure for harsh atmospheric and marine environments (RDAG12-8 only)
  • High-Power Model can drive loads up to 250mA per channel

These units each contain eight independent 12-bit digital-to-analog converters (DACs) and amplifiers for voltage outputs and voltage-to-current conversion. The DACs may be updated in a channel-by-channel mode or simultaneously. There are eight channels of voltage output and eight corresponding channels of 4-20mA current output. The output voltage ranges are software selectable. Calibration is performed by software. Factory calibration constants are stored in the EEPROM memory and can be updated by disconnecting the I/O wiring and entering software calibration mode. The units have analog voltage ranges of 0-5V, 0-10V, and ±5V, all at up to 10mA. Model RDAG12-8 is packaged in a NEMA4-compliant enclosure.

Model RDAG12-8H is similar except that each DAC output can drive loads up to 250mA. RDAG12-8H is packaged in a non-sealed "T-Box" steel enclosure.

Both models also have seven digital input/output ports. Each port can be individually programmed to be an input or an output. Digital input ports can accept logic high input voltages up to 50V and are overvoltage protected to 200VDC. Output drivers are open-collector and can comply with voltages up to 50VDC user-supplied voltage. Each output port can sink up to 350mA but total sink current is limited to a cumulative 650mA for the seven bits.

Specifications

Analog Ouputs

  • Channels: Eight independent.
  • Type: 12 bits, double-buffered.
  • Non-linearity: ±0.9 LSB maximum.
  • Output Ranges: 0-5V, 0-10V, ±5V.
  • Current Output: 4-20mA (user supplied 5.5-28V).
  • Output Drive: up to 10mA maximum.
  • Drive Capability:
    • RDAG12-8H: 250mA outputs.
  • Output Resistance: 0.5Ω.
  • Monotonicity: ±½ bit.
  • Settling Time: 15usec to ±½LSB for full-scale change of output.

Digital I/O

  • Number of Bits: Seven parallel bits. Each is software configured to be input or output on a bit-by-bit basis.
  • INPUT:Logic Low: -30.0 to 0.8 VDC at -0.4 mA max. Protected to -140VDC
  • INPUT:Logic High: 2.0 to 50.0 VDC (20uA max at 5V in, 5mA max at 50V in)
  • OUTPUT:Logic-Low Sink Current: 350 mA maximum. Inductive-kick suppression diode included in each circuit.
  • OUTPUT:High-Level Output Voltage: Open collector, compliance with up to 50V user-supplied voltage. If no user-supplied voltage exists, outputs are pulled up to 5VDC via 10 kilohm resistors.

Environmental

  • RDAG12-8
    • Operating Temperature Range: 0° to 65°C. (Optional -40°C to 80°C.)
    • Storage Temperature Range: -20°C to 70°C.
  • RDAG12-8H
    • Operating Temperature Range:0° to 65°C. (Optional -40°C to 80°C.)
    • Storage Temperature Range: -20°C to 70°C.
  • Humidity: 5% to 95% RH, non-condensing. Enclosure is designed to meet NEMA 4 requirements.

Power Required

  • Power for the opto-isolated section can be applied from the computer's 12 VDC power supply via the serial communications cable, if a four-wire cable is used, or by a local isolated power supply. Power for the rest of the pod can be provided by a local power supply.
  • Opto-Isolated Section: 7.5 to 28 VDC @ 40 mA maximum (7 mA at 12 VDC .)
  • Local Power
    • RDAG12-8
      • 7.5 to 16 VDC at 400 mA (typical).
    • RDAG12-8H
      • 7.5 to 16VDC @ 2.3A
      • -7.5 to -16VDC @ 2.0A

Regulatory Compliance

  • This product is in full compliance with CE requirements.ce mark
  remote connect

Available Reference Manuals


Manuals and Software

Further information about available ACCES Software:

Drivers And Operating Systems
What drivers and other support we provide for various operating systems.

Setup Programs, Samples, And Utility Software
A description of the software package that comes with each ACCES card.

Redistributing Windows Drivers
A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.

Custom Software Services
A description of some of our custom software offerings. Did you know we offer free programming services to qualifying customers?
   
  • Ordering Information
 
ModelPrice (USD)
RDAG12-8
RDAG12-8H
U-RDAG12-8 call
WM-RDAG12-8 call
E-RDAG12-8 call
S-RDAG12-8 call
   
 
 
 
USA Office

Tel:1.877.902.2979-1.425.223.4311
Fax:1.877.329.4324
Address: 1480 Gulf Road, Suite 837,
PO Box 1280
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Fax:1.604.925.6170
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027
Fax:1.905.513.7029
Address: 3075 14th Ave, Unit 219,
Markham, Ontario L3R 0G9