Emerson VE4031S2T2B1 M-series Redundant Standard I/O Termination Block

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

• Supports redundant discrete input signal wiring

• Ensures proper card installation via mechanical keying

• Compact, DIN-rail mountable

• Plug-and-play design reduces wiring errors

• Suitable for field use in process industries

Technical Specifications

Applications

• Redundant safety input systems in oil & gas, chemical, and power industries

• High-availability control systems using DeltaV™

• Distributed I/O architectures requiring failover protection

• Safety shutdown systems and ESD integration

• Continuous process control environments

Advantages

• Redundancy Built-in: Maintains signal integrity during primary module failures

• Field-proven Reliability: Engineered for mission-critical applications

• Fast Replacement: Keyed design prevents installation errors

• Compact Design: Saves control cabinet space

• Plug-and-play: Minimizes installation and commissioning time

• 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.