ANT401-50 Yokogawa Optical ESB Bus Repeater

Yokogawa ANT401-50 Optical ESB Bus Repeater Master Module

Yokogawa ANT401-50 Optical ESB Bus Repeater Master Module

Availability: 10 left in stock

Yokogawa ANT401-50 Optical ESB Bus Repeater Master Module The Yokogawa ANT401-50, also cataloged as the ANT401 Optical ESB Bus Repeater...

SKU: ANT401-50

Manufacturer: Yokogawa
Product No.: ANT401-50
Product Type: Communication Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 250g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa ANT401-50 Optical ESB Bus Repeater Master Module

The Yokogawa ANT401-50, also cataloged as the ANT401 Optical ESB Bus Repeater Master Module, operates as a dedicated hardware component for converting electrical ESB bus signals into optical signals within CENTUM VP, CS 3000, and ProSafe-RS control networks.

Hardware Specifications

Parameter	Specification
Model	ANT401-50 (Style S1)
Brand	Yokogawa Electric Corporation
Origin	Singapore
Weight	0.25 kg
Dimensions	22 x 124 x 126 mm
Operating Temp	-20 deg C to +70 deg C
Power Consumption	0.5 A (from 5 VDC chassis supply)
Transmission Medium	Optical fiber cable
Maximum Distance	5 km per stage (10 km maximum in dual-stage extension)
Topology	Star or chain configurations
Compatible Units	ANB10D, AFF50D, ANT10U, ANT502-50
Isolation	Galvanic isolation between electrical ESB and optical interfaces

Fieldbus Connectivity & Channel-to-Channel Isolation

The ANT401-50 master module converts high-speed electrical ESB signals into modulated optical pulses to extend communication distances between local control units and remote I/O nodes. By transmitting control traffic over fiber optic links, the module provides complete electrical channel-to-channel isolation, suppressing common-mode noise, ground loops, and high-voltage surges. Integrated diagnostic circuits track link power attenuation margins, reporting real-time signal health status directly to the host control system software.

Frequently Asked Questions

Q: Can the ANT401-50 module be replaced online while the control system is active?

A: Yes, the module supports online hot-swapping inside standard Yokogawa node units. Replacing the card does not interrupt backplane power or cause data frame corruption on adjacent running modules.

Q: What is the maximum fiber link distance supported between an ANT401-50 master and an ANT502-50 slave?

A: A single optical stage supports transmission distances up to 5 km over multi-mode or single-mode fiber infrastructure. Connecting two stages in series allows system architects to extend the total bus distance up to 10 km.

Field Installation Guidelines

Insert the ANT401-50 into the dedicated slot of the field control unit or node unit, securing the top and bottom thumbscrews to ensure frame ground continuity. Connect fiber optic cables using clean LC-type connectors, observing minimum bend radius specifications to avoid micro-bending signal losses. Attach the ESB bus connector unit (such as the CU1N option) firmly to the front interface, and torque all cable retention screws to prevent vibration-induced loosening. Keep fiber ports capped with dust covers until final cable termination to prevent optical transceiver contamination.

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.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

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.

Robert Hoffmann

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.