Description
The ADU71 USB to Current Output Interface (Transmitter) is a USB bus powered current loop source for driving 4-20mA or 0-20mA input devices.
The ADU71 can also be used with external resistors to provide 1-5VDC, 0-5VDC or 0-10VDC signals for variable frequency drives, valves etc.
The ADU71 internally generated 24VDC loop supply eliminates the need for an external loop power supply.
This low-cost USB to Current Output Interface is easy to use with VB,
VB.NET, Visual C++, C , MATLAB, LABView etc. via standard HID drivers included with Windows.
A mini-driver (DLL) is also provided allowing control using standard ASCII commands using familiar readfile, writefile commands.
The ADU71 includes a 10' USB cable and is available in a flange mount enclosure with a DIN rail mount option.
Click here to view sample connection diagrams.
Download the ADU71 Operating Commands
Download the ADU71 User Manual
Download
ADU71 3D STEP files for FLANGE or DIN mounting types.
Key Features
- USB to standard 0-20mA or 4-20mA powered current loop output .
- Drives 4-20mA, 0-20mA, devices or 1-5VDC, 0-5VDC or 0-10VDC inputs
using external resistors.
- Ideal for controlling VFD's, valves, etc.
- Internal 24VDC loop power supply supply derived from USB bus.
- Programmable slew rate from 1ms to 10 seconds
- Programmable host watchdog functions.
- Loop error detection.
- Over temperature protection.
- 2500V Isolation to loop.
- Bus powered
- High retention USB Connector
- CE Marked
- Bi-colour LED status indicator.
- High quality cage-clamp type terminal blocks.
- Uses standard HID drivers included with Windows 32-bit or 64-bit
- Mini-driver (DLL) provided. See Programming Page for details
- Meets IEC61000-4-2 ESD protection for USB port.
- Available in flange (standard) or DIN rail mount.
Typical Applications
- Industrial Instrumentation
- VFD or Valve Controller
- 4-20mA Actuator Controller
- SCADA Systems
- OEM Instruments Embedded Control
Technical Specification
Supply Voltage
NONE (Bus Powered)
USB Supply Current
70mA Typical 100mA Max
( 24V loop supply disabled)
180mA Typical 200mA Max ( 24V loop supply enabled)
Operating Temperature
-25C Min to 85C Max
Range
0-20mA or 4-20mA
programmable
Total Unadjusted Error
-0.3%FSR MIN +0.3% FSR MAX
Full Scale Error
-0.2% FSR
MIN +0.2% FSR MAX
Temperature Stability
+/- 16 ppm /Degree C
Slew Rate
1ms to 10s
programmable
Internal Loop
Power Supply
Loop Compliance Voltage
21VDC
Internal Loop Power Supply
24VDC
Flange Mount (STANDARD), DIN Rail
Pricing
IMPORTANT: Specify mounting option when ordering.-FLANGE(standard) or -DIN . See Mounting Options for details.
Mounting Options
