ANR10D-420 Yokogawa Bus Node Unit | New & Original Stock

Yokogawa ANR10D-420 ESB Bus Node Unit

Configured for high-density physical signal interface routing in CENTUM VP / CS 3000 networks, the Yokogawa ANR10D-420 (ANR10D Bus Node Unit) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

• Base Model: ANR10D (ESB Bus Node Unit interface frame)
• Power Supply Configuration (4): Dual-redundant internal power supply infrastructure
• Supply Voltage Standard (2): 220 to 240 V AC primary electrical input supply
• Explosion Protection (0): Basic construction type with no explosion protection barriers

Hardware Specifications

Channel-to-Channel Isolation and DCS Current Loops

The ANR10D-420 physical layer relies on strict channel-to-channel isolation boundaries to isolate the 10 separate 4-20 mA DC analog input paths from systemic loop corruption. This layout eliminates common-mode voltages from transferring between adjacent sensor pathways or creating ground loop errors during multi-signal acquisition. Field data lines route directly into the ESB interface logic without disrupting the 4-20 mA HART loop protocol parameters used on connected instruments. Built-in digital filtering pairs with native cold junction compensation (CJC) algorithms at the cabinet terminal blocks to maintain accurate processing across the remote FOUNDATION Fieldbus subsystem links.

Frequently Asked Questions

Q: How does the dual-redundant power supply sub-assembly respond during an input line failure?

A: The dual power circuits switch automatically without any voltage drop or logic interruptions. The backup line instantly takes over the system load, preventing data corruption on the 10 current channels and logging a power drop alarm in the DCS diagnostic register.

Q: Can an individual 4-20 mA current loop be wired using a 2-wire transmitter configuration without external power?

A: Yes. The input architecture supports both 2-wire and 4-wire loops, provided that channel-to-channel isolation parameters are observed. The internal logic derives continuous operating current from the backplane rail to drive standard 2-wire field instruments.

Field Installation Guidelines

• Module Slot Seating and Ground Retention: Align and seat the card into the designated station cage of the CENTUM processing unit. Tighten the integrated faceplate screws to establish proper electrical bonding with the cabinet's master ground rail.
• AC Supply Terminal Termination: Wire the dual-redundant power inputs with copper cables fitted with crimped, insulated ferrules. Keep the 220-240 V AC voltage lines isolated from low-voltage signal paths by a minimum of 300 mm to suppress cross-talk.
• Cable Shield Earthing Protocols: Drain single-shielded 4-20 mA pairs directly at the marshalling terminal blocks. Connect these shields to a low-impedance master copper grounding bar, avoiding multiple ground paths to eliminate loop noise.
• Thermal Envelope Specifications: Maintain an unblocked vertical gap of at least 50 mm above and below the node housing to enable passive air cooling inside the panel enclosure, keeping temperatures within the -20 to +60 deg C range.