Description

Yokogawa AKB331-M020 50-Pin DCS Shielded I/O Signal Cable

Technical Specifications

• Product Model: AKB331-M020
• Brand: Yokogawa Electric
• Warranty: One Year
• Input Voltage: Rated 250V AC withstand voltage
• Operating Temperature: -20°C to +80°C
• Storage Temperature: -40°C to +85°C
• Response Time: Zero latency for parallel discrete digital signal transmission
• Protection Class: IP20 for indoor control cabinet installation
• Accuracy Class: Full 1:1 pin mapping with zero signal crosstalk and transmission deviation
• Output Frequency: DC discrete digital field bus signal only
• Rated Current Range: Max 0.5A per single conductor for low-power instrumentation loops
• Communication Interface: Molded 50-pin male-to-male locking industrial connectors
• Supported Protocols: Parallel discrete I/O for CENTUM VP DCS and ProSafe-RS SIS safety system
• Overload Capacity: 500V DC dielectric voltage resistance, built-in short-circuit and reverse connection protection
• Dimensions: 20m total length, 6.8mm outer cable diameter, total weight 1.5kg
• 

Product Overview

The AKB331-M020 is a factory pre-terminated 50-pin shielded instrumentation cable developed exclusively for Yokogawa CENTUM VP distributed control systems and ProSafe-RS safety instrumented systems. The suffix M020 defines a fixed 20-meter overall length, tasked with establishing standardized wiring between SDV series digital I/O modules and SAT145 terminal interface boards inside process control cabinets. It adopts full aluminum polyester foil shielding with a dedicated drain wire to suppress electromagnetic interference generated by frequency converters, high-current contactors and power distribution cables, effectively avoiding false digital triggering, signal dropout and loop oscillation in electrically noisy industrial environments.

Constructed with 0.75mm² stranded copper conductors and abrasion-resistant PVC outer sheath, the cable supports repeated bending during cabinet layout rearrangement without internal wire fracture. Control system integrators, DCS maintenance technicians and plant instrumentation engineers gain practical value from its pre-assembled locked plug connectors that eliminate on-site soldering and wiring errors, strict factory-calibrated pinout matching original Yokogawa module protocols, and stable insulation performance with resistance above 100MΩ under 500VDC testing. This prefabricated cable drastically shortens DCS cabinet commissioning cycles, reduces hidden wiring faults, and guarantees uninterrupted 24/7 operation for critical process safety and control loops across heavy process industries.