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Yokogawa YCB301-C100 ESB Bus Cable

Configured for deterministic, low-latency communication in CENTUM VP, CS 3000, and ProSafe-RS control systems, the Yokogawa YCB301-C100 (YCB301 ESB Bus Cable) provides direct physical execution between Field Control Units (FCUs) and node units.

Suffix Breakdown & Model Matrix

Model / Suffix Code Description / Specification
YCB301 ESB Bus Cable (36-pin to 36-pin)
-C100 Cable length: 1 m

Hardware Specifications

Parameter Specification
Model YCB301-C100
Brand Yokogawa
Origin Japan
Weight 1.5 kg
Dimensions Length 1 m (36-pin to 36-pin connectors)
Operating Temp -20 to +80 deg C
Storage Temp -40 to +85 deg C
Cable Type Shielded ESB Bus Cable
Conductor Material High-conductivity copper
Wire Gauge 24 AWG typical
Insulation Material PVC, flame-retardant UL 94V-0
Shielding Foil plus braided shield, >90% coverage
Voltage Rating 60 VDC
Nominal Impedance 100 ohm
Propagation Delay <= 5 ns/m
Capacitance <= 50 pF/m
Flex Life > 1,000,000 bending cycles
System Compatibility CENTUM VP, CENTUM CS 3000, ProSafe-RS

Channel-to-Channel Isolation & Signal Integrity

The Yokogawa YCB301-C100 cable relies on high-coverage dual shielding consisting of aluminum foil combined with a tinned copper braid exceeding 90% coverage. This physical arrangement minimizes external electromagnetic interference (EMI) and cross-talk across its 36 conductors during high-speed ESB bus data transmissions. Furthermore, the 100-ohm nominal differential impedance matches the driver and receiver circuits of CENTUM series bus interface modules, maintaining low signal propagation latency under 5 ns/m and limiting total line capacitance below 50 pF/m.

Frequently Asked Questions

Q: What physical latching mechanism prevents intermittent disconnection during operational vibration?

A: The 36-pin connectors at both cable ends integrate heavy-duty mechanical locking latches that physically secure the plug to the interface headers on the Field Control Unit and expansion node chassis.

Q: Is the YCB301-C100 ESB bus cable hot-swappable during active node operation?

A: Disconnecting or connecting the ESB bus cable while the controller and node units are powered disrupts the active hardware communication loop and triggers bus communication fault alarms within the control software. Power to the expansion node sub-rack must be managed per system maintenance protocols prior to cable replacement.

Q: How does the cable construction resist physical wear inside industrial enclosures?

A: The cable assembly utilizes a flame-retardant UL 94V-0 compliant PVC jacket that offers high flex performance exceeding 1,000,000 bending cycles along with industrial-grade oil and abrasion resistance.

Field Installation Guidelines

Engineers must adhere to standard field installation procedures when routing the YCB301-C100 cable through control cabinets and inter-panel race channels:

  1. Maintain a minimum bending radius equal to or greater than ten times the overall cable diameter (10x OD) to avoid internal conductor fatigue and shield deformation.
  2. Route the ESB bus cable inside dedicated low-voltage signal conduits, separated by at least 300 mm from high-voltage AC power lines and motor drive cables to prevent electromagnetic coupling.
  3. Verify that the shield drain wires establish low-impedance ground continuity strictly through the dedicated chassis grounding points on the Yokogawa rack assemblies.
  4. Align the 36-pin connectors carefully before insertion, push firmly until the side locking clips click into place, and ensure zero strain is applied to the connector neck during cable tie-down.

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