Emerson VE4002S1T2B1

Emerson VE4002S1T2B1

Product Brief Introduction: VE4002S1T2B1 belongs to Ovation DCS digital output module series. It receives digital command from Ovation controller and outputs relay dry contact signal to control field solenoid valves, motor contactors and alarm equipment. It is installed in Ovation I/O rack for discrete on-off control in process plant.

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Description

Emerson VE4002S1T2B1

Technical Specifications

  • Signal type: Relay dry contact digital output
  • Channel quantity: 16 channels
  • Output type: Relay contact
  • Operating temperature: 0°C to +60°C
  • Storage temperature: -40°C to +85°C
  • Relative humidity: 5% to 95%, non-condensing
  • Mounting: Ovation standard rack backplane installation
  • Communication: Ovation rack backplane bus
  • Diagnostic function: Module self-test

Functional Features

  1. 16 independent relay dry contact output channels for field binary control.
  2. Relay provides electrical isolation between DCS system and field power loop.
  3. Surge suppression circuit for relay coil protection.
  4. Support hot swap replacement when rack remains powered.
  5. Front panel LED per channel to show relay operating state.
  6. Automatic power-up self-test and continuous background self-test.
  7. Fault status transmitted to Ovation controller.

Application Scenarios Thermal power plant auxiliary equipment control, chemical plant solenoid valve control, on-site alarm device drive, discrete valve on/off control.

Performance Parameters

  • Relay response time: Less than 10ms
  • Isolation voltage: 1500V AC
  • Relay mechanical life: Rated switching cycle

Material Composition

  • Front panel: Flame retardant silk screen plastic
  • PCB: FR-4 flame retardant board with conformal coating
  • Output element: Industrial signal relay
  • Surge protection: Varistor
  • LED indicator: Industrial LED
  • Backplane connector: Gold plated edge connector

Structural Characteristics Standard Ovation I/O card form factor. Rear gold plated edge connector plugs into rack backplane. Front panel equipped with extraction handle and channel LED indicators. Relay components separate field power circuit and DCS digital circuit.

Working Principle Ovation controller transmits digital on-off command to VE4002S1T2B1 via rack backplane bus. Internal logic circuit energizes or de-energizes relay coil. Relay dry contact switches field load circuit to control field equipment. The module continuously executes self-test and reports fault status to controller.

Installation Requirements

  1. Insert VE4002S1T2B1 into rack guide slot and lock front handle.
  2. Connect field load cable to relay contact terminals. Load must not exceed relay contact rating.
  3. Configure control logic in Ovation engineering workstation.
  4. Complete point functional test before commissioning.
  5. Separate field power wiring and DCS signal wiring.
  6. Cabinet protective ground connection must be reliable, grounding resistance less than 4 ohms.

Usage Precautions

  1. Do not apply load exceeding relay contact rated capacity. Overload causes contact welding.
  2. Inductive load must install surge absorber at contact terminals.
  3. Hot swap operation must follow Ovation official maintenance procedure.
  4. Do not touch gold plated connector pins.
  5. No field repairable parts. Replace whole module when fault occurs.
  6. Prevent metal debris falling into rack slot during installation.

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