2840A78G01(Westinghouse/Emerson)
June 05, 2026

2840A78G01(Westinghouse/Emerson)

This unit is a dedicated servo drive power supply board designed for Westinghouse QSD14 series servo control system, core matching component of Ovation / MAX1000 DCS platform, US-made industrial-grade spare module with CE certification. It supplies isolated regulated DC power and ±24mA analog control signal for servo closed-loop control circuits, widely deployed in steel mill, paper making, chemical industry large DCS cabinet, servo actuator & hydraulic servo valve drive system. Adopts integrated card structure for backplane plug-in & DIN rail dual installation.

Description

Main Application

  1. Power feeding for QSD series servo driver in Westinghouse Ovation DCS system

  2. Power supply for industrial servo valve, electric actuator and variable-speed motor control loop

  3. Cabinet centralized DC voltage stabilization, overvoltage/overcurrent protection and analog signal conversion output

Electrical Technical Specifications

1. Input Power

  • Input Voltage: AC 110V/220V auto-adaptive, 50/60Hz industrial standard cabinet power

  • Rated Input Power Consumption: Approx. 25W

2. Output Parameters

  • Main DC Power Output: ±24VDC for servo power loop

  • Analog Control Output: ±24mA standard current signal for servo valve driving

  • Dielectric Isolation: ≥2500VAC between input & output circuit

3. Ambient & Protection Specs

  • Operating Ambient Temp: 0℃ ~ +55℃ (indoor cabinet installation)

  • Storage Temperature: -40℃ ~ +85℃

  • Built-in protection: OVP(Over Voltage Protection), OCP(Over Current Protection), auto-lock under short-circuit fault

4. Interface Design

Side screw terminal block for power wiring; gold-plated back connector for backplane bus docking.

Mechanical Dimension & Physical Specification

  • Overall Dimension: L132.5mm × W80mm × H15mm

  • Net Weight: ~520g (1.15lbs)

  • Housing: Black flame-retardant engineering plastic with ventilation slots for passive heat dissipation

  • Mounting Method: Standard DIN rail snap-on + original rack backplane plug-in dual installation


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