Description
Emerson VE4002S2T2B8
Technical Specifications: Model: VE4002S2T2B8 Channel count: 8 digital output channels Output type: 24VDC transistor discrete output Single channel rated current: 0.5A Total maximum output current: 2A Bus: DeltaV LocalBus Power supply: 24VDC from rack backplane Operating temperature: 0℃ to +60℃ Storage temperature: -20℃ to +70℃ Relative humidity: 5% to 95%, non-condensing Protection class: IP20 Mounting: Plug-in card for DeltaV I/O rack
Functional Features: Convert DCS digital control commands to 24VDC discrete output for field actuators. Per-channel short circuit and overload fault detection. Front panel LED indicators for module status and channel output state. Hardware overcurrent protection for each output channel. Support hot swap online replacement without rack power off. Transmit channel fault diagnostic information back to DeltaV controller.
Application Scenarios: Chemical plant solenoid valve control, power plant auxiliary relay drive, refinery on-off valve control, water treatment pump start-stop control, packaging machinery discrete actuator control, oil & gas pipeline solenoid interlock control.
Performance Parameters: Fast channel output response for discrete control commands. Reliable overcurrent protection action under short circuit fault. Stable output performance under continuous long-time operation. Strong noise immunity in industrial cabinet environment.
Material Composition: FR4 industrial printed circuit board. Power transistor output components. Overcurrent detection circuit chips. Surge protection components. Flame retardant plastic front panel with LED indicators. Gold plated edge connector for rack backplane.
Structural Features: DeltaV S-series plug-in I/O card. Front panel equipped with power, run and fault LED indicators. Internal circuit separates low-voltage logic circuit and 24VDC output drive circuit. Edge connector connects with rack LocalBus backplane for power and communication. Built-in extraction handle for module disassembly. Match dedicated terminal block for field actuator wiring.
Working Principle: DeltaV controller sends digital on/off command to VE4002S2T2B8 via LocalBus backplane. Internal logic circuit drives power transistor to switch 24VDC output channel. The output signal controls field solenoid valves or relay coils. Onboard monitoring circuit detects output overcurrent and short circuit condition. Once fault occurs, module cuts off corresponding channel and sends fault alarm to DeltaV workstation.
Installation Requirements: Insert VE4002S2T2B8 into designated slot of DeltaV I/O rack. Install matched terminal block and connect field actuator shielded cables. Separate discrete output cables and high voltage power cables. Mount rack inside ventilated IP20 control cabinet. Complete protective earth bonding of rack chassis.
Usage Notes: Check field actuator coil load current to match module channel rating. Verify wiring polarity before power on. Wear anti-static wristband when handling module. Hot swap function supports online module replacement. Check terminal tightness regularly in high vibration cabinet.
