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Isolated Analog Signal Converter 75mV ...

Isolated Analog Signal Converter 75mV to 20mA Datasheet pdf

Features:

Product image

Key Features

  • Direct DC Current Shunt Interface: Converts 0–75 mV DC millivolt drop from external current shunts into standard 4–20 mA current loops
  • 2-Way Galvanic Isolation: Up to 1 kV RMS optical and magnetic isolation protects downstream PLCs and measurement systems
  • True Analog Signal Isolation: Preserves dynamic current fluctuations 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 (< 50 ms) for high-speed current monitoring and overcurrent detection
  • High Noise Immunity: Exceptional rejection of electrical noise, high-power DC switching transients, and ground loops
  • High Conversion Accuracy: Precision linear calibration delivering < ±0.5% F.S. accuracy @ 25 °C
  • 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 millivolt input spans (e.g., 50mV, 60mV, 100mV) available on request

Ordering Information

Product Code Description
AC-75mV-420 Isolated Analog Signal Converter 75mV to 20mA
AC-B75mV-420 Isolated Analog Signal Converter ±75mV to 20mA
SPD-20MA 4-20mA Surge Protection Device SPD 4 to 20mA
USS20M24V-D Current Source Simulator 0/4 to 20mA
SPD-24V-DC Surge Protection Device 24V DC SPD

Applications

  • DC Current Shunt Measurement: Interfaces standard 75 mV external shunts for precise DC load current measurement.
  • Battery Management Systems (BMS): Monitors battery bank charging and discharging current in solar, telecom, and UPS installations.
  • DC Motor Current Monitoring: Provides isolated current feedback for industrial DC motor drives and electroplating rectifiers.
  • SCADA & PLC Integration: Safely transmits current measurement signals across long distances to central control systems without ground loops.
  • Control Panel Building: Compact 35 mm DIN rail mounting for clean and space-efficient cabinet wiring.

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 0–75 mV DC (Current Shunt Millivolt Input)
Output Signal Range 4–20 mA DC (Load <= 500 Ω)
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

Mechanical dimensions

Terminal Details & Wiring

Pluggable industrial screw terminal block connections:

  • Terminal 18 (+) / Terminal A2 (-): 0–75 mV DC shunt millivolt input signal
  • Terminal 15 (OP+) / Terminal 26 (OP-): Isolated 4–20 mA DC analog output signal
  • 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.

Wiring

Revision History

Revision Date Description of Change
Rev 1.0 2026-09-09 Initial datasheet release for AC-75mV-420

Get the latest version of this datasheet : click here..

Support

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Email: info@veawe.io