Emerson VE4001S2T2B4 DeltaV digital input module with 32 channels, supports 24VDC dry contact signals, collects equipment status, valve feedback and switch signals, hot-swappable S-series traditional I/O spare part for process automation DCS system.

Product Overview

• Part No: VE4001S2T2B4
• Brand: EMERSON DeltaV

• Category: 32-Channel Discrete Input Module VE4001S2T2B4 is a high-density discrete input module of Emerson DeltaV S-series traditional I/O system. It acquires on/off status signals from field limit switches, breaker auxiliary contacts, valve position feedback, pressure and flow switches, and converts discrete field signals into digital data for DeltaV controllers. The module accepts 24VDC dry contact inputs and supports configurable signal debounce time to eliminate contact bounce interference. Each channel features independent signal isolation to resist ground loop and electromagnetic noise in industrial environments. Hot-swap design allows online replacement without shutting down the control logic. Front panel LED indicators display module running status and each channel signal state for fast on-site troubleshooting. Widely used as maintenance spare for petrochemical, oil & gas, power plant and chemical plant sequential control and equipment interlock systems.

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Core Features

• 32-channel high-density discrete digital input
• Supports 24VDC dry contact field signal input
• Software configurable input debounce function to filter contact jitter
• Electrical isolation between field circuits and internal bus to enhance anti-interference performance
• Comprehensive hardware and channel self-diagnosis for circuit fault detection
• Hot-swappable, supports online maintenance without process interruption
• Individual channel LED status indicators for visual signal monitoring
• Matches S-series I/O carrier and dedicated terminal block, no need to rewire during module replacement
• Complies with ISA-S71.04 Class G3 airborne contaminant standard

• Rugged industrial hardware for stable 24/7 continuous operation under complex electromagnetic conditions

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Technical Specifications

• Input Channels: 32 discrete input channels
• Signal Type: 24VDC dry contact input
• Debounce Time: Software configurable
• Isolation: Galvanic isolation between field and internal circuit
• Power Supply: Powered via DeltaV S-series I/O carrier backplane
• Operating Temperature: -40°C ~ +70°C
• Storage Temperature: -40°C ~ +85°C
• Humidity: 5%–95% non-condensing
• Environmental Grade: ISA-S71.04 Class G3
• Mounting: DeltaV S-series I/O carrier rack installation

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with DeltaV S-series I/O carriers, SQ/MX/MQ controllers and DeltaV control network
• Widely deployed in thermal power plants, petrochemical, oil & gas and fine chemical industries
• Applied for acquisition of breaker status, valve limit feedback, pump running signals and safety interlock contact signals