Isolated Analog Signal Converter ±300V to 10V
Bipolar ±300V to 10V isolated converter

Key Features
- 2-Way Galvanic Isolation: Up to 1 kV RMS isolation barrier between input and output/power circuits
- True Analog Signal Isolation: Preserves original analog waveform fidelity with a pure linear amplifier stage
- No PWM or Digital Reconstruction: Pure continuous analog processing without sampling ripple, ADC quantization, or conversion artifacts
- Fast Dynamic Response: Minimal signal processing latency for real-time tachogenerator speed and direction tracking
- High Noise Immunity: Exceptional rejection of high-frequency inverter switching noise and common-mode transients
- Excellent Signal Fidelity: High linear accuracy (< ±0.5% F.S.) across the full bidirectional ±300V DC input span
- Compact Industrial Enclosure: 35 mm DIN rail and wall-mount compatible housing (110 mm × 74 mm × 22 mm)
- 1-Year Warranty: Full 1-year warranty against manufacturing defects
- Factory Customizable: Custom input and output voltage spans available on request
Ordering Information
| Product Code | Description |
|---|---|
| AC-B300V-10V | Isolated Analog Signal Converter ±300V to 10V |
| AC-300V-10V | Isolated Analog Signal Converter 300V to 10V |
| AC-150V-10V | Isolated Analog Signal Converter 150V to 10V |
| SPD-24V-DC | Surge Protection Device 24V DC SPD |
| USS10V24V-D | Voltage Source Simulator 0-10V |
Applications
- DC Tachogenerator Speed & Direction Monitoring: Converts bipolar DC voltage output (±300V DC) from tachogenerators into standard 0–10V DC for PLC/SCADA speed and direction measurement.
- Bidirectional DC Motor Drives & Regenerative Braking: Provides safe galvanic isolation for motor armature voltage sensing across forward, reverse, and regenerative braking modes.
- Industrial Automation & Process Control: Reliable high-voltage signal interfacing and equipment protection in heavy industrial environments.
- SCADA & PLC Integration: Seamless communication between high-voltage DC field equipment and low-voltage automation control systems.
- Control Panel Building: Compact 35 mm DIN rail mounting for clean and space-efficient cabinet installation.
Specifications
| Parameter | Value |
|---|---|
| Mounting Type | 35 mm DIN Rail Mounting |
| Dimensions | 110 mm x 74 mm x 22 mm (L x W x H) |
| Enclosure Material | Industrial ABS plastic |
| 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 | 24V DC (15 ~ 28V DC) |
| Conversion Accuracy | < ±0.5% of Full Scale @ 25 °C |
| Temperature Drift | < 100 ppm / °C |
| Galvanic Isolation | 1,000 V RMS (Input / Output) |
Input/Output Specifications
| Parameter | Value |
|---|---|
| Input Signal Range | ±300V DC (Bidirectional High Voltage DC) |
| Output Signal Range | 0–10 V DC (Load >= 2 kΩ) |
| Response Time | < 1 ms |
Isolation & Protection Specifications
| Parameter | Value | Standard / Notes |
|---|---|---|
| Galvanic Isolation | 1,000 V RMS | Optical and magnetic isolation barrier |
| Reverse Polarity Protection | Integrated | Protects internal circuitry against reverse DC wiring |
| Transient Clamping | 600W TVS | Surge and spike suppression across all ports |
Mechanical Dimensions

Terminal Details & Wiring
Pluggable industrial screw terminal block connections:
- Terminal 18 (+) / Terminal A2 (-): Bidirectional DC Voltage Input (±300V DC)
- Terminal 15 (OP+) / Terminal 26 (OP-): Isolated Analog Voltage Output (0–10V DC)
- Terminal A1 (V+) / Terminal 25 (GND): 24V DC Auxiliary Power Supply
Wiring Diagrams
Note: All images and connection diagrams shown are for illustrative purposes only and may differ from the actual product.

Revision History
| Revision | Date | Description of Change |
|---|---|---|
| Rev 1.0 | 2026-09-12 | Initial datasheet release for AC-B300V-10V |
Get the latest version of this datasheet : click here..
Support
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Email: info@veawe.io