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Product Introduction
The Emerson VE4003S2B1, catalog number 12P3270X022, is a 16-channel Discrete Input (DI) Card engineered for use in the Emerson DeltaV™ DCS system. This module is a core component of the DeltaV I/O subsystem, offering reliable and high-speed acquisition of digital input signals from field devices such as limit switches, push buttons, and contact relays.
Designed with field diagnostics, robust electrical isolation, and modular scalability, the VE4003S2B1 provides unmatched flexibility for discrete signal monitoring in critical industrial automation environments. It supports both NAMUR and dry contact inputs, ensuring compatibility with a wide range of devices across multiple industries.
Technical Specifications
| Parameter | Description |
| Model Number | VE4003S2B1 |
| Catalog Number | 12P3270X022 |
| Type | DeltaV Discrete Input (DI) Card |
| Number of Channels | 16 Discrete Input Channels |
| Input Voltage Range | 18–30 VDC (Nominal 24 VDC) |
| Input Type | Dry Contact / NAMUR |
| On/Off Thresholds | ON > 10V, OFF < 5V (for Dry Contact) |
| Input Isolation | Optical isolation between channels and system |
| Update Rate | <1 ms per channel |
| Diagnostics | Input status, open wire detection (NAMUR) |
| Redundancy | Supports redundant I/O configurations |
| Hot-swappable | Yes |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH (non-condensing) |
| Power Consumption | Approx. 3.5 W |
| Mounting | DeltaV I/O carriers |
| Dimensions (W x H x D) | 107 x 41 x 105 mm |
| Weight | 0.4 kg |
| Certifications | CE, ATEX, IECEx, CSA, UL, FM |
| System Compatibility | Native support for Emerson DeltaV™ systems |
Applications
The Emerson VE4003S2B1 DI card is widely used in discrete control applications requiring high reliability and signal integrity, including:
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Oil & Gas Terminals – Monitoring valve and switch status in hazardous zones
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Chemical Plants – Tracking actuator and process interlock status
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Power Generation – Interfacing with breaker and protective relay signals
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Water & Wastewater – Monitoring pump start/stop commands and alarms
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Food & Beverage – Integrating with packaging machine logic and sensor inputs
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Pharmaceutical – Cleanroom interlocks and access control inputs
Product Advantages
Rapid Response Time: Less than 1 ms per channel ensures fast reaction to digital events.
Field Diagnostics: Integrated health monitoring and wire break detection (NAMUR).
Channel Isolation: Improves reliability by preventing signal interference and cross-talk.
Universal Compatibility: Accepts dry contact or NAMUR inputs for broader device integration.
Seamless DeltaV Integration: Plug-and-play setup within the DeltaV system architecture.
Compact Modular Design: Optimized for tight cabinet installations.
Hot-swappable Capability: Enables easy maintenance without system shutdown.
Certified for Hazardous Areas: Ensures safe deployment in demanding industrial environments.
Latest News Headlines
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Emerson Expands DeltaV DI Module Line to Support More Complex Logic Interlocks
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Smart Input Modules Reduce Manual Diagnostics in Hazardous Environments
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Industrial Automation Moves Forward with Emerson’s Enhanced DI Modules
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DeltaV’s Modular I/O Helps Drive the Future of Scalable Process Control
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NAMUR-Compatible Modules Gain Ground in European Facilities
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Emerson DI Cards Improve Reliability in Power Sector Automation
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Reducing I/O Cabinet Footprint with High-Density Input Cards
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Digitalization Trends Embrace Smart Discrete Modules for Predictive Control
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Emerson I/O Innovations Featured at Automation Expo 2025
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Process Safety Boosted by Advanced Diagnostics in Emerson DI Cards
Frequently Asked Questions (FAQ)
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How many channels does the VE4003S2B1 support?
This card supports 16 discrete input channels. -
What type of input signals are compatible with this card?
It supports both dry contact and NAMUR sensor inputs. -
Is this card hot-swappable?
Yes, it can be replaced or inserted while the system is running. -
Does this card support diagnostics?
Yes, it includes input status reporting and NAMUR open-wire detection. -
Can the VE4003S2B1 be used in hazardous areas?
Absolutely. It carries certifications like ATEX, IECEx, and FM. -
Is it compatible with redundant DeltaV systems?
Yes, it supports full I/O redundancy configurations. -
What is the channel update time?
Each channel updates in less than 1 millisecond. -
Is there isolation between input channels?
Optical isolation is provided between inputs and system bus. -
Can I use this module outside the DeltaV system?
It’s optimized for DeltaV, but third-party use may require protocol adaptation. -
What is the power consumption of the module?
Power draw is approximately 3.5W under nominal operating conditions.
Related Models (Same Series or Functionality)
| Model Number | Description |
| VE4002S1T2B4 | DeltaV 16-Channel Discrete Output Card |
| VE4001S1T2B2 | DeltaV 8-Channel Thermocouple Input Card |
| VE4005S2B1 | DeltaV Analog Input Card with HART Support |
| VE4006S2T1B3 | DeltaV Analog Output Card with Redundancy Support |
| VE4007P2B1 | DeltaV High-Density DI/DO Combo Module |
| VE4003S1T2B1 | DeltaV Discrete Input Card (Dry Contact Only) |
| VE4008P2B2 | DeltaV Relay Output Module |
| VE4009S2T2B2 | DeltaV Mixed Signal I/O Module (8 DI + 8 DO) |
Popular Emerson Models
| Model Number | Description |
| KJ3001X1-BB1 | DeltaV 8-Channel Analog Input Module |
| VE4005S2B1 | DeltaV AI Module with HART Capability |
| VE4002S1T2B4 | DeltaV 16-Channel DO Module |
| VE4006S2T1B3 | DeltaV AO Module (Redundant) |
| VE4008P2B2 | DeltaV Relay Output Module |
| KJ4010X1-BG1 | DeltaV Thermocouple Input Module |
| VE4007P2B1 | DeltaV High-Density Mixed DI/DO Module |
| KJ3221X1-BA1 | DeltaV Discrete Input (Legacy Series) |
