Description

Yokogawa ANB10D-425 ESB Bus Node Unit

The Yokogawa ANB10D-425, also cataloged as the ANB10D ESB Bus Node Unit, operates as a dedicated hardware component for analog and discrete signal interfacing within CENTUM VP and CENTUM CS 3000 Distributed Control Systems.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa ANB10D-425
Origin	Japan
Weight	10 kg (fully populated)
Dimensions	482.6 mm x 221.5 mm x 150.6 mm (W x H x D)
OperatingTemp	0 degC to 50 degC
PowerConsumption	230 VA / 120 W
PowerConfiguration	Dual-redundant (2 independent power supply modules)
InputVoltage	220 to 240 V AC
SupplyFrequency	50 / 60 Hz
IOModuleSlots	Up to 8 FIO modules per node unit
MaxConnectableUnits	Up to 13 per FCU (depending on model)
BusConnection	ESB Bus via EC401 / EC402 Coupler Modules

Process Control Features

• Supports 4-20 mA HART loop protocol for analog I/O channels.
• Provides channel-to-channel isolation to minimize signal interference.
• Compatible with FOUNDATION Fieldbus / Profibus PA connectivity for field device integration.
• Includes cold junction compensation (CJc) for thermocouple signal accuracy across environmental temperature variations.

Frequently Asked Questions

Q: Does the ANB10D-425 support hot-swapping of FIO modules?
A: No, the FIO modules must be powered down before insertion or removal to avoid bus communication errors.

Q: What is the maximum backplane current load per node unit?
A: Each node unit supports standard FIO module loads; the total should not exceed the rated 120 W consumption to maintain stable operation.

Q: Can firmware updates be applied while the unit remains connected to the FCU?
A: Firmware updates require the ESB node to be isolated from live bus communication to ensure safe flash programming.

Field Installation Guidelines

• Mount the unit on a standard 19-inch rack using M5 x 4 screws; ensure mechanical stability.
• Maintain proper grounding of the ESB bus shield to prevent EMI interference.
• Route power and signal cables separately where possible to minimize cross-talk.
• Avoid excessive bending or compression of backplane connectors during installation.
• If configured as the last node on the bus chain, use the /CU2T Connector Unit with terminator.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems