Description

Yokogawa AKB331-M020 Signal Cable

Configured for RS-485 signal transmission in Yokogawa CENTUM VP and CENTUM CS 3000 systems, the Yokogawa AKB331-M020 (AKB331 Signal Cable) provides direct physical and electrical connection between compatible serial communication modules and terminal boards through a 50-pin to 50-pin cable assembly. The AKB331-M020 design is intended for fixed-length field wiring applications requiring a 20 m interconnection path.

Suffix Breakdown & Model Matrix

Parameter	Specification
Base Model	AKB331
Product Type	Signal Cable
Suffix Code	M020
Cable Length	20 m
Connector Configuration	50-pin to 50-pin
Application	Serial communication module to terminal board connection

Hardware Specifications

Parameter	Specification
Model	AKB331-M020
Brand	Yokogawa
Origin	Japan
Power Consumption	Passive cable, no power consumption specified
Cable Type	Signal Cable / RS-485 Communication Cable
Connection Ends	50-pin to 50-pin
Cable Length	20 m
Conductor Material	High-grade copper
Jacket Material	Industrial-grade PVC
Primary Function	Communication signal transmission
Installation Environment	Control cabinets, rack rooms, industrial control systems

Channel-to-Channel Signal Integrity Considerations

Within Yokogawa DCS architectures, communication links depend on stable signal transmission characteristics between field interface hardware and control modules. The AKB331-M020 cable assembly supports RS-485 communication paths through a dedicated 50-pin connection structure. Proper shield continuity, connector retention, and controlled cable routing practices help minimize electromagnetic interference between adjacent signal paths. Installation should avoid parallel routing with high-current power conductors where possible.

Frequently Asked Questions

Q: Does the AKB331-M020 require an external power source?
A: No. The AKB331-M020 is a passive signal cable intended solely for electrical interconnection between compatible devices.

Q: Can the cable be shortened or extended in the field?
A: The provided model is supplied as a factory-defined 20 m assembly. Any modification should be evaluated against system communication and installation requirements.

Q: What connector arrangement is used on the cable?
A: The cable utilizes a 50-pin to 50-pin connector configuration designed for compatible Yokogawa interface modules and terminal boards.

Field Installation Guidelines

• Verify equipment compatibility before installation, including module and terminal board connector types.
• Inspect connector housings and contacts for mechanical damage prior to connection.
• Maintain cable routing separation from high-voltage and high-current conductors to reduce electrical noise coupling.
• Observe the manufacturer's recommended minimum bending radius during installation.
• Secure the cable within trays or cabinets to prevent excessive mechanical stress on connector terminations.
• Ensure shielding and grounding practices comply with site electrical standards and DCS installation procedures.
• Perform continuity and communication verification tests after installation and before system commissioning.

Specifications

• Brand: Yokogawa

Advantages

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