Current Source Simulator Without Display
Current Source Simulator Without Display USS20M24V-P
The USS20M24V-P is a compact, cost-effective 3-wire 0/4–20mA analog current source simulator designed for panel mounting. Featuring a smooth 5-turn precision potentiometer, front-panel PWR status LED, and rear range-selection jumper, it provides a dependable analog current signal for testing and calibrating PLC analog inputs, DCS controllers, and field indicators where an integrated digital readout is not required.
Key Features
- Active 3-wire 0/4–20mA current generation from 24V DC power
- Jumper-selectable 0–20mA or 4–20mA output range
- 5-turn precision wirewound potentiometer for smooth adjustment
- High output drive capability powering loop loads up to 1,100 Ω
- Input reverse polarity and continuous output short-circuit protection
- Standard 48 mm × 48 mm panel mount enclosure
- Dimensions: 48 mm × 48 mm × 90 mm
Ordering Information
| Product Code | Description |
|---|---|
| USS20M24V-P | Current Source Simulator 0/4 to 20mA Without Display (24V DC, Panel Mount) |
| USS20M48V-P | Current Source Simulator 0/4 to 20mA Without Display (48V DC Input, Panel Mount) |
| USS20M24V-D | Current Source Simulator 0/4 to 20mA (with 4-Digit 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) |
| ULS20M24V-P | Loop Current Source Simulator 4-20mA (2-Wire, Panel Mount) |
Applications
- PLC & DCS Analog Channel Testing: Simulating 0–20mA or 4–20mA process signals to verify PLC I/O card scaling and alarm trip points.
- Transmitter Replacement & Diagnostics: Injecting test current into control loops to isolate faulty transmitters or field wiring.
- Valve & Actuator Calibration: Setting travel limits and position feedback on analog control valves, dampers, and positioners.
- Bench Calibration & Field Service: Portable calibration reference for routine plant instrument maintenance.
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 (Standard) | 24V DC External |
| Power Supply (48V Model) | 48V DC External (USS20M48V-P) |
| Power Indicator | Red LED (front panel) |
| 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 | \(10\,\Omega \text{ to } 1.1\,\text{k}\Omega\) |
| Reverse Polarity Protection | Integrated series protection diode |
| Short Circuit Protection | Continuous electronic current limiting |
Mechanical Dimensions
Terminal Details & Wiring
Terminal Connections & Jumper Configuration
The USS20M24V-P features a rear screw terminal block for power supply input, active current output, and range selection.
| Terminal Pin | Label | Function | Description |
|---|---|---|---|
| 1 | 1 V+ | DC Power Positive | +24V DC (or +48V DC on 48V model) Power Supply Input |
| 2 | 2 V- | DC Power Negative | 0V / Power Ground Return |
| 3 | 3 + | Current Output (+) | Active 0/4–20mA Current Output Signal |
| 4 | 4 - | Current Output (-) | Current Return / Signal Ground |
| 7 & 8 | Jumper | Range Mode Selection | Closed (Bridged): 0 to 20 mA range Open: 4 to 20 mA range |
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