Description

Yokogawa ANR11D-420 S1 Node Interface Unit

Configured for ER Bus communication in Yokogawa CENTUM CS 3000 and CENTUM VP platforms, the Yokogawa ANR11D-420 S1 (ANR11D Node Interface Unit) provides direct physical aggregation and electrical transmission of field I/O data to the Field Control Unit.

Suffix Breakdown & Model Matrix

Code Segment	Value	Definition
Base Model	ANR11D	Node Interface Unit for Dual-Redundant ER Bus
Power Config	4	Dual-redundant power supply
Voltage	2	220 - 240 V AC
Protection	0	Basic type (No special explosion protection)
Style	S1	Hardware Style 1

Hardware Specifications

Parameter	Specification
Model Brand	Yokogawa ANR11D-420 S1
Origin	Japan
Weight	5.0 to 7.25 kg (Dependent on I/O module loading)
Dimensions	19-inch Rack Mount Chassis
Operating Temp	0 to 50 degC
Power Consumption	230 VA to 260 VA (Max 190 W)
Input Voltage	198 to 264 V AC
Frequency	50/60 Hz +/- 3 Hz
Bus Type	Dual-Redundant ER Bus (Extended Remote Bus)
Compatible PSU	PW482

4-20 mA HART Loop Protocol Integration

The ANR11D-420 S1 supports standard FIO module mounting, enabling native 4-20 mA current loop handling. When populated with compatible analog input cards, the unit processes HART protocol data superimposed on the physical layer. Signal integrity is maintained through channel-to-channel isolation barriers inherent to the Yokogawa FIO architecture, ensuring that electromagnetic interference from high-voltage switchgear does not corrupt low-level process variable readings transmitted to the FCU.

Frequently Asked Questions

Q: What is the hot-swap limitation for I/O modules in this chassis?

A: Hot-swapping of FIO modules is permitted only when the node is powered by dual-redundant PW482 supplies and the system is in RUN mode. Removal during cold start may cause ER Bus reinitialization delays.

Q: Does the ANR11D-420 S1 support direct Profibus PA connectivity?

A: No. The ANR11D is an ER Bus node interface. Profibus PA or FOUNDATION Fieldbus connectivity requires specific communication interface modules mounted within the chassis slots.

Q: What is the power-up surge current behavior?

A: Initial power-up surge can reach approximately 30 A for 5 ms. Ensure upstream circuit breakers are rated for motor-starting type loads to prevent nuisance tripping.

Field Installation Guidelines

Mount the unit using four M5 screws with supplied insulation bushes to maintain dielectric isolation from the 19-inch rack frame. Ensure earth ground continuity is verified before applying AC power. For ER Bus cabling, maintain a minimum separation of 300 mm from high-voltage power conduits to prevent inductive coupling. Terminate all shielded twisted pair cables with proper strain relief and connect shield drains to the chassis ground terminal at one end only.

Specifications

• Brand: Yokogawa

Advantages

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