Current Source Simulator -230VAC Input ...
The USS20M230V-D is a line-powered 0/4–20mA analog current source simulator operating directly from a standard 230V AC mains supply. Equipped with a bright 4-digit red 7-segment LED display and a precision 5-turn potentiometer, it provides a self-contained current generator that requires no external DC power supply. It is ideal for switchboard testing, field commissioning, and bench calibration of PLC analog input cards, SCADA systems, VFD speed references, and valve actuators.

Key Features
- Direct 230V AC mains powered 0/4–20mA current simulator
- Integrated internal AC-to-DC isolated power supply
- Jumper-selectable 0–20mA or 4–20mA output range
- 4-digit 7-segment LED display with 0.01 mA readout resolution
- 5-turn precision wirewound potentiometer for fine current dial-in
- High output drive capability powering loads up to 1,100 Ω
- Continuous short-circuit and thermal protection
- Standard 48 mm × 48 mm panel mount enclosure
- Dimensions: 48 mm × 48 mm × 90 mm
Ordering Information
| Product Code | Description |
|---|---|
| USS20M230V-D | Current Source Simulator 0/4 to 20mA (with 4-Digit Display, 230V AC, Panel Mount) |
| USS20M24V-D | Current Source Simulator 0/4 to 20mA (with 4-Digit Display, 24V DC) |
| USS20M24V-P | Current Source Simulator 0/4 to 20mA (Without Display, 24V DC) |
| USS20M24V-2P | Dual Output Current Source Simulator (DIN Rail Mountable, 24V DC) |
| USS10V24V-D | Voltage Source Simulator 0-10V (with 4-Digit Display, 24V DC) |
| SPD-230V-AC | Surge Protection Device 230V SPD / Single Phase SPD |
Applications
- Control Panel & Switchboard Testing: In-panel current simulation where 230V AC power is readily available, eliminating auxiliary DC supply bricks.
- PLC & DCS Analog Channel Calibration: Verifying 4–20mA scaling, linear conversion parameters, and alarm setpoints on industrial controllers.
- Transmitter Simulation: Simulating pressure, temperature, flow, and level transmitter outputs during commissioning.
- Valve Positioner & Damper Testing: Driving electro-pneumatic positioners, I/P converters, and proportional motorized actuators.
Specifications
| Parameter | Value |
|---|---|
| Mounting Type | Panel Mounting (with side clamping brackets) |
| Dimensions | 48 mm x 48 mm x 90 mm (W x H x D) |
| Preferred Panel Cutout | 45 mm x 45 mm |
| Weight | Approximately 150 g |
| Enclosure Material | Industrial Grade ABS |
| Operating Temperature | -10 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5% to 95% RH (non-condensing) |
Electrical Specifications
| Parameter | Specification |
|---|---|
| Power Supply Voltage | 230V AC \(\pm 15\%\) (50 / 60 Hz) |
| Power Consumption | < 2 W |
| Display Type | 4-digit red 7-segment LED display |
| Output Current Range | 0/4 mA to 20 mA (jumper selectable) |
| Output Accuracy | \(\pm 1\%\) of Full Scale |
| Adjustment Mechanism | 5-turn wirewound precision potentiometer |
| Adjustment Resolution | \(\ge 0.01\text{ mA}\) step resolution |
| Load Resistance Range | \(10\,\Omega \text{ to } 1.1\,\text{k}\Omega\) |
| Short Circuit Protection | Continuous electronic current limiting |
Mechanical Dimensions
| Parameter | Value |
|---|---|
| Bezel Dimensions | 48 mm x 48 mm (W x H) |
| Depth Behind Panel | 90 mm (including rear terminals) |
| Panel Cutout | 45 mm x 45 mm (+0.5 mm) |
| Mounting Type | 1/16 DIN Panel Mount with side clamping brackets |

Terminal Details & Wiring
Terminal Connections & Jumper Configuration
The USS20M230V-D features a rear screw terminal block for 230V AC power input, active current output, and range selection.
| Terminal Pin | Label | Function | Description |
|---|---|---|---|
| 1 | L | AC Line Input | 230V AC Phase / Line wire |
| 2 | N | AC Neutral Input | 230V AC Neutral wire |
| 4 | 4 Out+ | Current Output (+) | Active 0/4–20mA Current Output Signal |
| 5 | 5 Out- | Current Output (-) | Current Return / Signal Ground |
| 6 & 7 | Jumper | Range Mode Selection | Closed (Bridged): 0 to 20 mA range Open: 4 to 20 mA range |
| 9 & 10 | NC | Reserved | No Connection |
[!CAUTION] Ensure 230V AC mains power is de-energized before making or changing wiring connections to Terminal 1 (L) and Terminal 2 (N).
Revision History
| Revision | Date | Description of Change |
|---|---|---|
| Rev 1.0 | 2026-09-09 | Initial datasheet release |
Get the latest version of this datasheet : click here..
Support
Website: www.veawe.io
Email: info@veawe.io