Woodward 8237-1596 Digital Proportional Valve Amplifier

Product Brief Introduction Microprocessor-based digital proportional valve amplifier with communication and configuration capabilities for precision valve control.
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Technical Specifications Supply: 24 V DC ±10%; input: 4–20 mA / Modbus RTU; output: 0–3 A proportional; 12-bit resolution; dither: software configurable; RS-485 Modbus; -40 °C to +85 °C; IP40.

Functional Features Digital closed-loop current control; software configurable dither; Modbus monitoring/configuration; fault diagnostics; auto-zero.

Application Scenarios Networked valve control, precision hydraulic systems, digitally configurable valve drives.

Performance Parameters Current accuracy: ±0.3% FSO; resolution: 12-bit; response time: < 12 ms.

Material Composition Sheet metal housing; digital control PCB; power output stage; Modbus transceiver.

Structural Characteristics DIN rail mount; front status LEDs; rear terminal block and comm port.

Working Principle Digital controller samples output current, adjusts PWM output stage to maintain precise proportional current; parameters configurable via Modbus.

Installation Requirements Mount on DIN rail; connect valve, power and Modbus; configure via service tool.

Usage Notes Configure dither and gain via Modbus; backup configuration; perform periodic diagnostic reads.




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