Yokogawa ANR10D-420 ESB Bus Node Unit

The Yokogawa ANR10D-420, also cataloged as the ANR10D ESB Bus Node Unit, operates as a dedicated hardware component for remote node communication and I/O bus expansion within Yokogawa DCS platforms. The unit coordinates real-time data transmission between field control stations and local I/O modules over the redundant interface. It processes backplane power distribution and digital signal traffic without introducing bus latencies across the node backplane.

Hardware Specifications

Galvanic Isolation and DCS Channel Integrity

The Yokogawa ANR10D-420 node unit incorporates galvanic isolation between primary AC supply rails and low-voltage DC backplane logic. The redundant power conditioning stage provides channel-to-channel isolation and voltage regulation across all installed I/O cards, preventing field-side electrical surges or ground loops from compromising central processing communication. This design maintains steady HART signal superimposition and noise-free analog-to-digital conversion across interconnected field loops.

Frequently Asked Questions

Q: What power supply option is integrated into the Yokogawa ANR10D-420 node unit?

A: The ANR10D-420 model features a factory-configured dual-redundant power supply accepting an input voltage range of 220 - 240 VAC.

Q: Does the basic ANR10D-420 unit carry hazardous area explosion protection ratings?

A: No, option code 0 designates a basic enclosure type configured without intrinsic safety or explosion-proof certification.

Q: How does the dual-redundant power supply behave if one AC line fails?

A: The internal power module automatically balances load current and maintains continuous 24 VDC backplane bus power from the active AC source without causing system reset.

Field Installation Guidelines

1. Ensure both 220 - 240 VAC main power feeds are isolated prior to installing or wiring the node unit into the rack enclosure.
2. Mount the ANR10D-420 securely onto the standard 19-inch cabinet frame using four M5 retention screws to establish proper chassis grounding.
3. Terminate dual AC power connections to the designated primary and redundant power terminal blocks, verifying correct wire gauge and polarity.
4. Connect the ESB bus cables to the dedicated interface ports and tighten the locking connector thumb screws to maintain signal shield continuity.
5. Provide a minimum clearance of 50 mm above and below the node unit to allow natural convection cooling across the internal power supply heatsinks.

The ASD143-P00 designation defines the 16-channel digital input hardware configuration equipped with an integrated intrinsic safety barrier for hazardous-area installations. The base part number ASD143 establishes the core printed circuit assembly architecture.

Hardware Specifications

Channel-to-Channel Isolation and Input Signal Processing

The module maintains complete channel-to-channel electrical isolation and incorporates an internal barrier providing intrinsic safety compliance for hazardous zones. Input signal processing supports NAMUR switching standards with a fast response time of 15 ms, a pushbutton ON detection threshold of 20 ms, and a maximum switching frequency of 25 Hz while withstanding up to 1500 V AC surge isolation.

Frequently Asked Questions

Q: What input standards are supported by the ASD143-P00 module channels?

A: The module supports NAMUR (IEC 60947-5-6) compatible input standards across all 16 isolated channels.

Q: What is the current consumption profile of the module across its voltage rails?

A: The module consumes 150 mA from the 5 V DC power rail and 110 mA from the 24 V DC power rail.

Q: Does the module support pulse counting applications?

A: Yes, it supports pulse counting and pushbutton signal detection up to a maximum switching frequency of 25 Hz.

Field Installation Guidelines

Ensure the control rack is fully de-energized before inserting or removing the module. Align the printed circuit board with the designated system slot guides and push firmly until the backplane connectors engage. Secure the module using the integrated mechanical fasteners. Ensure proper shielding and grounding of field wiring to maintain intrinsic safety barriers and prevent electromagnetic interference in hazardous environments.