ANT502-50/BU1A Yokogawa Optical ESB Bus Repeater

Yokogawa ANT502-50/BU1A Optical ESB Bus Repeater Slave

Yokogawa ANT502-50/BU1A Optical ESB Bus Repeater Slave

Availability: 10 left in stock

Yokogawa ANT502-50/BU1A Optical ESB Bus Repeater Slave Module The Yokogawa ANT502-50/BU1A, also cataloged as the ANT502 Optical ESB Bus Repeater...

SKU: ANT502-50/BU1A

Manufacturer: Yokogawa
Product No.: ANT502-50/BU1A
Product Type: Communication Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa ANT502-50/BU1A Optical ESB Bus Repeater Slave Module

The Yokogawa ANT502-50/BU1A, also cataloged as the ANT502 Optical ESB Bus Repeater Slave Module, operates as a dedicated hardware component for converting optical ESB signals back into electrical bus signals within CENTUM VP, CS 3000, and ProSafe-RS control networks.

Hardware Specifications

Parameter	Specification
Model	ANT502-50/BU1A
Brand	Yokogawa Electric Corporation
Origin	Japan
Weight	0.3 kg
Dimensions	32.8 x 142.5 x 130 mm
Operating Temp	0 deg C to +55 deg C (up to +70 deg C with cabinet airflow rules)
Power Consumption	0.5 A (from 5 VDC backplane bus)
Module Type	Optical ESB Bus Repeater (Slave Side)
Transmission Medium	Optical fiber cable
Maximum Range	5 km per stage (10 km maximum across dual-stage topologies)
Network Topology	Star or chain configurations (up to 8 node connections)
Interface Unit	Integrated BU1A connector unit for direct ESB connection

Fieldbus Connectivity & Channel-to-Channel Isolation

The ANT502-50/BU1A slave repeater receives modulated optical pulses transmitted from an upstream ANT401 master module and reconstructs electrical ESB bus frames for local I/O expansion racks. Fiber optic communication yields complete galvanic channel-to-channel isolation between remote field control stations, shielding analog loop processors and 4-20 mA HART loop protocol instruments from severe electromagnetic noise, electrical surges, and ground potential differentials across dispersed plant units.

Frequently Asked Questions

Q: Can the ANT502-50/BU1A module be replaced without powering down the field I/O node?

A: Yes. The ANT502-50/BU1A supports online hot-swapping within compatible Yokogawa node units. Replacing the module under live backplane power does not cause logic interruptions or voltage dips on adjacent backplane cards.

Q: What purpose does the HKU interface serve when paired with the ANT502-50/BU1A?

A: The optional Housekeeping Unit (HKU) interface allows the ANT502-50/BU1A to transmit cabinet environmental monitoring signals—such as internal temperature alarms and fan power status—directly back to the central host controller over the optical bus link.

Field Installation Guidelines

Seat the ANT502-50/BU1A vertically into the designated node chassis slot, tightening the upper and lower panel retention screws to maintain a continuous ground reference to the enclosure backplate. Secure the BU1A connector block to the front interface, and connect the optical fiber lines ensuring clean LC connectors are fully engaged. Maintain at least 50 mm of passive ventilation clearance above and below the module rack assembly to operate within the specified temperature limits. Route optical patch cables through dedicated wire raceways to maintain minimum bending radius thresholds and prevent fiber core stress.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.