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Yokogawa ANB10D-420 S2 ESB Bus Node Unit

Configured for ESB bus communication and FIO module integration in Yokogawa CENTUM VP and CS 3000 systems, the Yokogawa ANB10D-420 S2 (ANB10D ESB Bus Node Unit) provides direct physical and electrical execution of field I/O interfacing, power distribution, and redundant bus connectivity. The unit accommodates up to eight FIO modules and supports dual-redundant ESB bus and power supply configurations.

Suffix Breakdown & Model Matrix

Code	Description
ANB10D	ESB Bus Node Unit with dual-redundant ESB bus support
-4	Dual-redundant power supply configuration
2	220 - 240 VAC power input
0	Standard type without explosion protection
S2	Hardware style revision

Hardware Specifications

Parameter	Specification
Model	ANB10D-420 S2
Brand	Yokogawa
Origin	Japan
Product Type	ESB Bus Node Unit
Bus Interface	ESB Bus
Maximum I/O Modules	8 FIO modules
Supported Couplers	EC401, EC402
Power Supply Configuration	Dual-redundant
Input Voltage	220 - 240 VAC
Voltage Tolerance	-15 % to +10 %
Frequency	50/60 Hz (+/- 3 Hz)
Power Consumption	230 VA / 120 W
Insulation Resistance	20 Mohm minimum at 500 VDC
Dimensions	Approx. 205 mm x 37.75 mm x 440 mm
Weight	Approx. 10 kg (fully populated)
Mounting	19-inch rack mounting
Terminal Type	M4 screw terminals
Operating Temp	0 degC to 50 degC
Humidity	5 % to 95 % RH non-condensing
Temperature Change Rate	Within +/- 10 degC per hour
Altitude	Up to 2000 m

Channel-to-Channel Signal Handling Characteristics

The ANB10D node unit is designed for integration of analog and digital FIO modules within the CENTUM platform architecture. Signal acquisition and transmission are performed through the ESB bus network while module power is supplied from the internal redundant power subsystem. The hardware architecture supports independent field signal processing paths and centralized communication with the associated Field Control Unit (FCU).

Frequently Asked Questions

Q: How many FIO modules can be installed in one ANB10D node unit?
A: The node unit supports installation of up to 8 Yokogawa FIO modules.

Q: Does the ANB10D-420 S2 support redundant communication paths?
A: Yes. The unit supports dual-redundant ESB bus connections and dual-redundant power supply operation when configured with the appropriate modules.

Q: Which ESB bus coupler modules are compatible with this node unit?
A: Communication with the FCU is implemented through EC401 or EC402 ESB Bus Coupler Modules.

Field Installation Guidelines

• Install the unit in a compatible 19-inch control system rack using specified mounting hardware.
• Verify incoming power supply voltage before energizing the node unit.
• Connect protective earth conductors to the designated grounding terminals prior to system startup.
• Separate power wiring from signal wiring where practical to reduce electromagnetic interference.
• Tighten M4 terminal connections according to site electrical standards and inspection procedures.
• Confirm correct seating and locking of all installed FIO modules before applying power.
• Maintain operating conditions within the specified temperature, humidity, and altitude limits.
• Perform insulation and grounding verification during commissioning and maintenance activities.

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