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Yokogawa AKB336-M010 Signal Cable

The Yokogawa AKB336-M010, also cataloged as the AKB336 Signal Cable (20-20 pins), operates as a dedicated hardware component for PLC/DCS Signal Transmission Cable operations within CENTUM CS, CENTUM VP, ProSafe-RS, and FA-M3 platforms. The cable assembly provides point-to-point electrical interconnection to route analog and digital signals between multi-channel I/O modules and destination terminal boards. It implements a multi-layer shielding matrix to prevent external electromagnetic interference from degrading low-level voltage or current loops across medium-range cabinet runs.

Hardware Specifications

Parameter Specification
Model AKB336-M010
Brand Yokogawa
Platform CENTUM CS / CENTUM VP / ProSafe-RS / FA-M3
Origin Japan
Weight 1 to 3 kg depending on production batch
Dimensions Cable length 10 m (Fixed length assembly)
Operating Temp -20 to +70 deg C (Extended limits up to +80 deg C under specific conditions)
Storage Temp -40 to +85 deg C
Connector Configuration 20-pin to 20-pin dedicated industrial interface
Conductor Material Tinned copper multi-strand cores
Insulation Material Cross-linked polyethylene (XLPE)
Outer Jacket Material Polyvinyl chloride (PVC) with optional low smoke zero halogen (LSZH) variants
Shielding Topology Full coverage shielding consisting of aluminum foil wrap plus braided copper mesh
Operating Voltage 300 V nominal rating
Test Dielectric Voltage 2000 V AC for 1 minute duration
Nominal Impedance 120 ohms plus or minus 10%
Mutual Capacitance 90 pF/m
Minimum Bend Radius 10 times the outer cable diameter
Flame Retardancy IEC 60332-3 compliant

Process Control Loops and DCS Instrument Integration

The signal cable serves as the primary transmission bus routing process variables from field-mounted 4-20 mA HART loop protocol instruments to the central processing matrix. The implementation of high-coverage aluminum foil and braided copper wrap guarantees high channel-to-channel isolation limits across adjacent wire pairs, mitigating electromagnetic noise coupling between high-frequency digital lines and high-accuracy analog inputs. This layout maintains signal propagation stability for remote temperature loops requiring precise cold junction compensation parameters by blocking stray ambient electrical fields along the 10 m path.

Frequently Asked Questions

Q: Can this cable assembly be altered or truncated in the field to match short cabinet runs?

A: No. The assembly features molded 20-pin connectors pre-terminated and factory-tested to maintain precise nominal impedance and shield continuity parameters; structural alterations will void the nominal test voltage ratings.

Q: What is the mechanical flex constraint for routing this cable inside high-density control enclosures?

A: The layout must adhere to a minimum bend radius of 10 times the cable's outer diameter to prevent internal mechanical tension from stressing the XLPE core insulation or fracturing the multi-strand tinned copper conductors.

Q: How does the cable jacket react under exposure to high-temperature plant environments?

A: The PVC outer jacket maintains structural stability up to a maximum continuous operating threshold of +70 deg C (with transient performance up to +80 deg C), beyond which the material properties degrade and compromise electrical isolation benchmarks.

Field Installation Guidelines

  • Connector Keying Alignment: Check the orientation keys on both 20-pin connector housings before insertion to ensure correct pin matching between the I/O module and the terminal block faceplate.
  • Shield Grounding Termination: Ensure the external braided drain path makes positive electrical contact with the designated chassis grounding bar to permit effective diversion of common-mode noise.
  • Strain Relief Retention: Anchor the cable bundle securely using industrial zip ties near both termination entry zones to prevent the physical weight of the 10 m span from placing mechanical load on the connector pins.
  • Parallel Routing Segregation: Maintain standard physical spacing distances between this low-voltage signal cable track and high-voltage power distribution lines to prevent inductive noise injection.

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