Excellent PLC
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| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Overview
The Emerson VE4031S2T2B1 is a redundant standard I/O termination block designed for use with DeltaV™ M-series Discrete Input cards. It enables high-reliability signal termination in safety-critical applications and supports dual redundant 24V DC dry contact inputs, ensuring continuity in the event of module failure.
Key Features
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Supports redundant discrete input signal wiring
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Ensures proper card installation via mechanical keying
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Compact, DIN-rail mountable
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Plug-and-play design reduces wiring errors
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Suitable for field use in process industries
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | VE4031S2T2B1 |
| Application Type | Redundant Discrete Input (24V DC Dry Contact) |
| Channel Capacity | 8 Channels |
| Redundancy Support | Yes (1:1 card redundancy) |
| Installation Type | DIN-rail mounted |
| Compatibility | DeltaV M-series I/O carriers |
| Keying | Mechanical keyed interface |
| Protection Rating | IP20 |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5–95%, non-condensing |
| Dimensions (H x W x D) | 107 x 41 x 105 mm |
| Weight | 0.3 kg |
Applications
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Redundant safety input systems in oil & gas, chemical, and power industries
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High-availability control systems using DeltaV™
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Distributed I/O architectures requiring failover protection
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Safety shutdown systems and ESD integration
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Continuous process control environments
Advantages
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Redundancy Built-in: Maintains signal integrity during primary module failures
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Field-proven Reliability: Engineered for mission-critical applications
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Fast Replacement: Keyed design prevents installation errors
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Compact Design: Saves control cabinet space
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Plug-and-play: Minimizes installation and commissioning time
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Wide Compatibility: Fully integrated with DeltaV M-series systems
FAQ (Frequently Asked Questions)
Q1: What type of signals does VE4031S2T2B1 support?
A1: It supports 24V DC dry contact discrete input signals in redundant configurations.
Q2: Is the module hot-swappable?
A2: Yes, it supports under-power replacement in safe areas.
Q3: Can this block be used with non-redundant cards?
A3: No, it is specifically designed for redundant card pairs.
Q4: How is proper module insertion ensured?
A4: Mechanical keying prevents incorrect card insertion.
Q5: What environment standards does it comply with?
A5: It meets ISA-S71.04 Class G3 and has conformal coating for corrosion resistance.
Q6: Does it support field pre-wiring?
A6: Yes, terminal blocks can be wired before I/O cards are inserted.
Q7: What is the maximum operating temperature?
A7: +70°C.
Q8: Is it certified for hazardous areas?
A8: Yes, it holds ATEX, IECEx, FM, and CSA certifications for Class I Div 2 environments.
Q9: Can I use this in legacy DeltaV systems?
A9: Yes, for v10.3.1 and above. Use VE4031S2T2B1; for earlier versions, use KJ3222X1-BA2.
Q10: How many channels does it support?
A10: It supports 8 channels in a redundant I/O configuration.
Related Models (Same Series)
| Model Number | Description | Channels | Redundancy | Dimensions (mm) | Weight |
|---|---|---|---|---|---|
| VE4001S2T2B1 | Standard I/O Termination Block (Simplex) | 8 | No | 107x41x105 | 0.3 kg |
| VE4001S2T2B2 | Fused I/O Termination Block (Simplex) | 8 | No | 107x41x105 | 0.3 kg |
| VE4001S2T2B3 | 16-Pin Mass Termination Block | 8 | No | 107x41x105 | 0.3 kg |
| VE4001S2T2B4 | Standard I/O Block for 32ch DI Card | 32 | No | 107x41x105 | 0.3 kg |
| VE4031S2T2B6 | Redundant 32ch DI Terminal Block Plus | 32 | Yes | 107x41x105 | 0.3 kg |
| VE4031S2T2B7 | Redundant 40-Pin DI Mass Termination Block | 32 | Yes | 107x41x105 | 0.3 kg |
Popular Emerson Models
| Model Number | Description | Application | Dimensions (mm) | Weight |
|---|---|---|---|---|
| VE4002S2T1B1 | Standard DO Termination Block (AC Isolated) | Digital Output (AC) | 107x41x105 | 0.3 kg |
| VE4002S2T2B1 | Standard DO Termination Block (AC High-Side) | Digital Output (AC) | 107x41x105 | 0.3 kg |
| VE4005S2B1 | Standard AO Termination Block | Analog Output (4-20mA) | 107x41x105 | 0.3 kg |
| VE4003S2B1 | Standard AI Termination Block | Analog Input (4-20mA) | 107x41x105 | 0.3 kg |
| VE4001S2T1B1 | Standard DI Termination Block (Isolated) | Digital Input (24V DC) | 107x41x105 | 0.3 kg |
| VE4032S2T2B1 | Redundant DO Termination Block (DC High-Side) | Redundant Digital Output | 107x41x105 | 0.3 kg |
