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The A2EE1A-T is an ESB bus terminator developed specifically for the CENTUM VP control system. Serving as a critical hardware component within the FIO node network of the field I/O links, this unit must be secured strictly to the final physical node of a daisy-chained multi-node bus.
Terminates the daisy-chained ESB bus within the field I/O links
Absorbs communication signal reflections at the physical end through impedance matching
Eliminates packet loss and maintains the communication integrity of the entire high-speed network link
The A2EE1A-T integrates high-frequency precision matching resistors, which absorbs signal reflections at the physical end of the bus and maintains network impedance balance. Through this precise impedance matching, the terminator effectively eliminates packet loss and prevents communication distortion, thereby maintaining the communication integrity of the entire high-speed network link. Acting as the terminal interface plugged directly into the SB401 slave interface module, it performs a pivotal role in anchoring physical nodes across long-distance, distributed I/O expansion loops.
The internal electronic components of the unit undergo rigorous factory testing for dielectric isolation and attenuation limitation, ensuring that the dual-redundant YCB301 bus cables achieve high-fidelity communication even in complex environments with intense electromagnetic interference. To accommodate various severe industrial fields, this product is also available with an optional G3-level anti-corrosion coating that complies with ISA S71.04, physically eliminating poor contact or impedance drift caused by harsh gas corrosion, and positioning it as a core physical barrier to ensure the long-term stability and secure operation of the Yokogawa DCS extended network.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Yokogawa A2EE1A-T ESB Bus Terminator Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil & Gas Refining
Field I/O nodes governing Fluid Catalytic Cracking Units (FCCU) and atmospheric distillation towers.
Thermal Power Generation
Boiler Control Systems (BCS) and Balance of Plant (BOP) distributed networks.
Nuclear Power Generation
Offers passive, radiation-hardened hardware termination for the DCS backplane network, eliminating any threat of software-based or electronic component failure modes.
Iron & Steel Smelting
Shielding 128 Mbps digital control traffic against high-current electrical transients and electromagnetic fields radiating from immense industrial ladle cranes.
Pulp & Paper Industrial Mills
Shields crucial continuous steam control loops from data losses caused by structural vibration or severe moisture near processing rollers.
Cement & Lime Processing
Protects fast-rate sensor readings inside highly dusty areas from electrical impedance variations caused by environmental exposure.
It must be installed strictly on the final physical node of the daisy-chained multi-node ESB bus link (typically mounted on the SB401 module) and must never be omitted or misplaced at an intermediate node. Hot-swapping is strictly forbidden while the control system is online because removal will immediately disrupt the bus impedance balance and trigger a widespread communication collapse. During field storage and installation, interfaces must be kept clean and dry, and the anti-corrosion version with the /G3 suffix must be selected for harsh gas environments to prevent contact corrosion and impedance drift.
Alternative Names
Alternative Names
A2EE1A TA2EEIA-T
Technical notes
Technical notes
Yokogawa A2EE1A-T is a high-reliability ESB bus connector unit with a built-in terminator designed for the Yokogawa CENTUM VP Distributed Control System (DCS). Typically plugged into the SB401 slave interface module at the final node of the network, its core function is to absorb high-frequency electrical energy via precision impedance-matching resistors, completely eliminating signal reflection waves at the cable termination to ensure 128 Mbps high-speed communication integrity. Featuring a passive, maintenance-free, and redundant design as the physical anchor for the ESB bus link, it is widely utilized in large-scale continuous industrial process control within the refining, chemical, and power industries to maintain long-term stability and determinism of the control network.
The A2EE1A-T is an ESB bus connector unit with a built-in terminator used in Yokogawa CENTUM VP control systems, primarily utilized to terminate the bus communication network.
Which control system architecture does A2EE1A-T belong to?
It belongs to Yokogawa's CENTUM VP Distributed Control System (DCS) and is a critical hardware component within the FIO (Field Input/Output) network chain.
On which core module is the A2EE1A-T typically installed?
It is usually plugged directly into the SB401 (ESB Bus Interface Slave Module), serving as the terminal interface for the physical network node.
How to properly use a product like A2EE1A-T?
It must be installed on the very last physical node of a multi-node ESB bus communication link to maintain the impedance balance of the extended DCS network via its internal resistor.
What is the core technical difference between A2EE1A-T and A2EE1A-N?
The A2EE1A-T contains an internal terminal matching resistor for the end of the network, whereas the A2EE1A-N is a standard connector unit without a terminator, used for daisy-chaining middle network nodes.
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