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Yokogawa AKB337-M020 Signal Cable

Configured for FIO module connectivity in CENTUM VP and CENTUM CS 3000 architectures, the Yokogawa AKB337-M020 (AKB337 Signal Cable) provides direct physical and electrical routing between field I/O modules and terminal boards or relay interfaces.

Suffix Breakdown & Model Matrix

• AKB337: Base model for multi-core signal cables used in Yokogawa FIO connections
• -M020: Cable length designation, 2.0 meters

Hardware Specifications

Parameter	Specification
Model	AKB337-M020
Brand	Yokogawa
Origin	Japan
Weight	Approx. 0.5-0.7 kg (depending on shielding variant)
Dimensions	Not specified
OperatingTemp	-20 degC to +70 degC
PowerConsumption	Passive cable, no direct consumption
Cable Type	Multi-core signal cable
Number of Pins	50-pin
Connector Types	Dual-ended molded connectors for Yokogawa FIO interfaces
Application	Connects FIO modules to terminal or relay boards
Minimum Bending Radius	6 times cable diameter for fixed installation
Voltage Rating	Max 30 VDC

Yokogawa DCS Signal Transmission Characteristics

Yokogawa Signal cable construction provides comprehensive shielding to protect analog and digital process signals from EMI within control cabinets. Connector interfaces maintain channel-to-channel segregation, supporting 4-20 mA loop transmission, HART protocol, and FOUNDATION Fieldbus/Profibus PA connectivity without inducing cross-talk. Cable impedance and pin layout comply with Yokogawa FIO module specifications, ensuring predictable signal attenuation and minimal noise insertion.

Frequently Asked Questions

Q1: Can the AKB337-M020 be used in a hot-swap scenario?
A1: The cable itself is passive; hot-swap suitability depends on the connected I/O modules and system rack design.

Q2: Is the cable shield grounded at both ends?
A2: For optimal EMI suppression, shield termination should follow single-point grounding practices aligned with control cabinet standards.

Q3: Can this cable be routed alongside power lines?
A3: It is recommended to maintain separation from high-voltage or switching power lines to prevent induced noise. Physical separation or conduit shielding is advised.

Field Installation Guidelines

• Verify correct pin orientation and connector alignment before insertion
• Avoid sharp bends; maintain minimum bending radius of 6x cable diameter
• Route cable away from power lines and sources of EMI to maintain signal integrity
• Ground shield at a single reference point per control cabinet to prevent loops
• Ensure connectors are fully seated and mechanically secured to avoid intermittent contact
• Avoid mechanical stress or torsion on the cable jacket during installation

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