Emerson CE4003S2B1 KJ3222X1-BA1 12P2532X152 is a redundant standard I/O terminal module specifically designed for the DeltaV M Series legacy I/O system and belongs to the DeltaV legacy I/O terminal module family. Its original design purpose is to provide a safe, reliable and redundancy-backed terminal connection solution for the 8-channel 4-20mA HART analog input card marked with key position A1. As a core component for critical signal transmission and connection, this product not only supports the wiring requirements of 2-wire and 4-wire field devices, but also can work with the corresponding redundant I/O card to form a 1:1 redundancy architecture. This ensures that when the primary I/O card fails, the system can automatically switch to the standby card without any additional modifications to on-site wiring, thus guaranteeing the continuity of process control. It is highly suited to the stringent requirements for stability and fault tolerance in industrial process control scenarios. Through standardized design, redundancy adaptation features and robust safety protection mechanisms, it ensures accurate and uninterrupted signal transmission between field devices and control systems, while simplifying installation and maintenance procedures and reducing system operation and maintenance costs. In addition, as an important part of the DeltaV modular I/O system, it is fully aligned with the system’s redundancy design philosophy, enabling full reuse of existing I/O investments and spare parts resources. Redundancy functions can be activated without additional configuration, making it an ideal terminal connection choice for critical control loops in process industries such as oil and gas, chemical engineering and electric power.
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Technical Specifications
This module is compatible with 8-channel 4-20mA HART analog input cards (key position A1) and supports 2-wire and 4-wire field devices. It adopts DIN rail surface-mount installation, with protection ratings of IP20 and NEMA 12. The operating temperature ranges from -40℃ to 70℃, and the storage temperature ranges from -40℃ to 85℃, with a relative humidity tolerance of 5% - 95% (non-condensing). It meets ISA-S71.04-1985 G3 corrosion protection standard with conformal coating treatment and holds hazardous area certifications including ATEX 3 G IIIC T4 and Class 1, Div 2, Groups A, B, C, D, T4. The module features pre-wiring support and screw-type terminal connection, and it supports 1:1 redundant I/O configuration, realizing automatic switching in conjunction with redundant I/O cards.
Functions and Advantages
(1) Redundancy Architecture Compatibility: Ensuring Process Continuity
As a redundant terminal module, the core function of the CE4003S2B1 is to support the 1:1 redundancy configuration of the DeltaV I/O system. When used in conjunction with the redundant 8-channel 4-20mA HART analog input card, this module can form a complete redundant I/O interface. The redundant terminal block adopts an on-site wiring method that is identical to that of the non-redundant block, eliminating the need for additional wiring or layout adjustments.In the event of hardware failures, communication interruptions, abnormal on-site wiring or other issues with the primary I/O card, the system can automatically switch to the standby card without manual intervention. The switching time is controlled within two scanning cycles of the I/O bus, and the overlapping drive time of the analog output signal during switching is less than 5ms. This ensures that the process control remains unaffected and significantly improves the process availability of the system.
(2) Standardized Design: Simplifying Installation and Maintenance
Modularity and Plug-and-Play Features
This terminal module features a DIN rail surface-mount design and can be directly installed on the I/O interface carrier, achieving full compatibility with the modular architecture of the DeltaV legacy I/O system. It supports hot swapping (installation specifications for Zone 2 or Class 1 Division 2 must be followed), allowing for module addition, removal or replacement without system shutdown, which greatly enhances the flexibility of system expansion and maintenance.
Exclusive Key Locking Mechanism
The CE4003S2B1 complies with the key error-proof design of the DeltaV legacy I/O system, and its key configuration is strictly matched with the compatible 8-channel HART analog input card (key position A1). The terminal module is equipped with two rotatable and lockable key posts (supporting A-F/1-6 combination positioning), which ensure that only the corresponding I/O card can be inserted. This effectively prevents the misinsertion of incorrectly model cards, reducing the risk of human errors during installation and maintenance. Meanwhile, the key position identifier is clearly marked on the side of the card for quick compatibility verification.
Pre-wiring Support
Pre-wiring of the terminal module can be completed before the installation of the I/O card. Wires of on-site devices can be connected to the terminal block in advance, and direct plug-and-play connection can be realized once the I/O card is in place. This significantly shortens the on-site installation cycle and reduces commissioning delays caused by wiring errors.
(3) Reliable Protection and Signal Assurance
Environmental and Protection Ratings
This product meets the requirements for industrial-grade environmental applications, with a protection rating of IP20 and NEMA 12, which provides effective protection against dust and splashing water. It has an operating temperature range of -40℃ to 70℃, a storage temperature range of -40℃ to 85℃, and a relative humidity tolerance range of 5% - 95% (non-condensing), making it suitable for harsh industrial field environments. In addition, the product complies with the ISA-S71.04-1985 G3 corrosion protection standard. Through the selection of high-quality electronic components and conformal coating treatment, it can resist corrosion from corrosive gases and pollutants in industrial environments.
Hazardous Area Compatibility
The CE4003S2B1 is suitable for installation in hazardous areas and complies with ATEX 3 G IIIC T4 and Class 1, Div 2, Groups A, B, C, D, T4 standards. It supports non-incendive field circuit design, which limits energy output under normal operating conditions to avoid ignition risks, meeting the safety requirements of flammable and explosive environments such as oil and chemical industries (refer to Installation Manual 12P2046 for Zone 2 or Installation Manual 12P1293 for Class 1 Division 2 for specific installation details).
Signal Transmission Stability
Working in tandem with the compatible I/O card, the terminal module supports 4-20mA standard signal and HART protocol transmission, enabling functions such as on-site device status monitoring and variable reporting. The internal terminal blocks of the module adopt a reliable screw-type connection design to ensure good signal contact and reduce transmission loss and interference. Combined with the optical isolation design of the I/O card (each channel undergoes a 1500VDC factory test against the system), it further enhances the anti-interference capability of signals and system safety.
Application Scenarios and System Compatibility
The CE4003S2B1 is mainly applied in industrial process control scenarios with extremely high requirements for signal transmission continuity, such as key process parameter acquisition loops (e.g., pressure, temperature, flow rate) in petrochemical plants, equipment condition monitoring loops in power systems, and other core control links requiring redundant backup. This product is exclusively compatible with the DeltaV M-series Traditional I/O system and incompatible with S-series controller carriers, and must strictly comply with the hardware configuration specifications of the DeltaV system. In terms of system compatibility, it supports functions such as online equipment addition and automatic redundancy detection of the DeltaV system. After a new module is connected, it can be automatically recognized by DeltaV Explorer and complete basic configuration without complex manual parameter settings.
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