[USB-034] USB to 4-20mA Generator Rev2
Under Development
VCCI 
High-precision control of 4–20 mA current output via USB.
Isolation between the USB and 4-20 mA output side.
Overview
USB-034 is a generator that allows control of 4-20mA signals from a computer via USB. The USB side and the 4-20mA output side are electrically isolated. It also includes a built-in loop power supply for the 4-20mA side.
USB-034 can be used as a 4-20mA signal generator when utilizing a computer for instrumentation and control applications.
Dedicated control commands are also provided, allowing the 4-20mA output to be controlled from your own custom applications.
* Second and subsequent images are CG models
* Image with optional accessories
Features
- A generator that outputs 4-20mA current via USB.
- USB side and the 4-20mA output side are electrically isolated (DC1500V)
- Output Accuracy: 0.05% FS or less (@25°C)
- Built-in loop power supply for the 4-20mA side (switch selectable)
- Enables 4-20mA current output, auto-step, and auto-sweep operation via the included application
- Enables 4-20mA output from user applications using dedicated control commands
- Controllable from embedded Linux devices
It operates as a device of the standard CDC-ACM class.
For Linux distributions with embedded CDC-ACM device drivers, you can use them without installing the drivers.
We do not support the use of Linux itself. - No external power supply is required
USB-034 is powered through a USB port (Bus-powered) - ESD and surge protection
- Pluggable the screw terminal
- Housing material: Plastic
- DIN rail, magnet, and screw mountable (Attachment is required)
- Includes a USB cable (1.8m)
- Free from the 10 RoHS-restricted substances.
- MADE IN JAPAN
Features
- Easy control via virtual COM port with USB connection to a PC
- Output current can be configured
- Output ON/OFF control available
- Analog section status can be monitored
Specifications
| Item | Description | Remarks |
|---|---|---|
| Model | USB-034 | |
| Input Power | 5VDC Supplied through a USB port (Bus-powered) |
No external power supply required |
| I/O Interface | RS485/RS422 (2-wire or 4-wire) | ESD protection ±15KV |
| HOST Interface | USB 2.0 compliant (Support Full Speed) |
USB 1.1 compatible ESD protection ±11KV |
| Output Connector | 3-pin terminal block | Support custom baud rate |
| Output Range | 4-20mA or 3.2-24mA | Selectable by command |
| Resolution | 16-bit D/A Converter (DAC) | Phoenix Contact Model: 1759020 |
| Output Accuracy | 0.05% FS or less (@25°C) | When output range is 4-20 mA |
| Alarm Current | Downscale alarm current: 3.2 mA Upscale alarm current: 22.8 / 24 mA |
Selectable by command |
| External Loop Power Supply | DC20-52 V | Drive capability varies depending on the supplied voltage. |
| Load Resistance | When using built-in loop power supply: 1200 Ω max. When using external loop power supply: 1200 Ω max. (@DC52 V) 500 Ω max. (@DC24 V) |
|
| Isolation Method | Bus isolation | |
| Isolation Protection | DC1500V | Designed value |
| LSI | General-purpose microcontroller 4-20mA DAC |
|
| LED | Status LED x 2 Power LED |
|
| Control Method | Communication control via virtual COM port | |
| Operating Ambient Temperature | -20 to 60℃ (-4 to 140 [°F]) | No condensation permitted |
| Operating Ambient Humidity | 30 to 85%RH | No condensation permitted |
| Storage Ambient Temperature | -20 to 60℃ (-4 to 140 [°F]) | No condensation permitted |
| Storage Ambient Humidity | 30 to 85%RH | No condensation permitted |
| Noise Immunity | Not specified | |
| Compliance Standards | VCCI Class B | |
| Weight | Approx. 90 [g] | Only main body |
| Dimensions | 67 x 67 x 28 [mm] (2.638" x 2.638" x 1.102") |
Without projections |
* Power saving function (suspend, standby, sleep and others) is not supported
Application
This application runs on Windows and supports Windows 11 and Windows 10. By sending control commands to the device via USB, the application can output current from the device.
The application provides the following main functions:
- Current output using 4-20mA current set values
- Current output using scaling settings
- Auto Step output
- Auto Sweep output
and more
Interface Terminal (PIN ASSIGNMENT)
| Pin No | Signal |
|---|---|
| 1 | Current Terminal (+) |
| 2 | Current Terminal (−) |
| 3 | Loop Power (LP) |
Package Contents
- USB-034
- USB cable 1.8m
- Driver & Application CD
Documentation
User's manual, Outline Drawing, etc
Price and Optional Accessories
| Description | MODEL | Image | List Price (JPY) |
Stock Status |
|---|---|---|---|---|
| USB to 4-20mA Generator |
USB-034 |  |
||
| Attachment with clamping screw |
PEN-003 |  |
||
| Attachment for 35mm DIN rail |
PEN-003-DIN |  |
||
| Attachment with neodymium magnet |
PEN-003-MG |  |
||
| Detachable 5P Terminal Connector 1757048 (Phoenix) (Additional purchase) |
TB-USB-3 |  |
Ordering
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