Yokogawa ANB10D-427/CU2T ESB Bus Node Unit

Configured for analog and contact I/O signal communication with Field Control Units across ESB bus networks, the Yokogawa ANB10D-427/CU2T (ANB10D-427/CU2T ESB Bus Node Unit) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

Hardware Specifications

Process Control and DCS Characteristics

• 4-20 mA HART loop protocol: The unit supports integrated HART pass-through, allowing the DCS asset management system to query device diagnostics and configuration parameters directly through the control loop.
• FOUNDATION Fieldbus / Profibus PA connectivity: The architecture facilitates deterministic communication with fieldbus-based instrumentation, ensuring precise timing and data synchronization across the control network.
• Channel-to-channel isolation: The module design maintains galvanic separation between internal processing logic and field I/O connections to mitigate common-mode noise and protect against signal transients.
• Cold junction compensation (CJC): The unit interfaces with I/O terminal boards to execute high-precision CJC for thermocouple inputs, maintaining measurement accuracy across the wide operating temperature range.

Frequently Asked Questions

Q: Does the dual-redundant power configuration support live replacement during operation?

A: Yes. The dual-redundant power supply architecture allows individual power modules to be replaced online without interrupting node operation or field I/O power.

Q: What is the maximum data transmission rate supported over the ESB bus interface?

A: The ESB bus operates at a deterministic data rate of 128 kbit/s for reliable communication between the node unit and the Field Control Unit.

Field Installation Guidelines

• Mount the node unit securely within a standard industrial enclosure, allowing adequate clearance around the 48.2 cm x 22.2 cm x 5.5 cm chassis for thermal dissipation within the specified operating temperature range of 0 deg C to 50 deg C.
• Connect the incoming 220 - 240 V AC supply lines to the dual power terminals, verifying correct phase and earth grounding to protect internal distribution circuitry and mitigate electrical noise.
• Route ESB bus cables separately from high-voltage power lines and variable frequency drives to prevent electromagnetic interference and maintain stable data synchronization at 128 kbit/s.
• Ensure that field signal cable shields and connector units with terminators (S9564FA) are properly terminated to the designated cabinet grounding points to preserve channel-to-channel isolation and bus termination impedance.