Product Overview

The Emerson Ovation 5A26141G06 serves as a specialized factory-terminated communication link within the Ovation™ Distributed Control System. This 4.5-foot (1.37 m) coaxial cable facilitates high-speed data exchange between local I/O modules and the main controller. Specifically tuned for the 50 kHz carrier signal of the Ovation local bus, this 100% brand-new cable ensures transparent data flow in high-EMI environments like turbine decks and boiler rooms.

Technical Specifications

The 5A26141G06 features industrial-grade shielding and precise impedance matching to maintain signal integrity over the local bus.

Engineering Advantages

• Impedance-Matched Signal Integrity: The 75 Ω coaxial architecture prevents signal reflections that typically plague standard serial cables. This specific impedance ensures that the 50 kHz carrier frequency travels without attenuation or data corruption.

• Superior Noise Immunity: The combination of braid and foil shielding provides 100% coverage against RFI and EMI. This protects the local I/O bus from the massive electromagnetic fields generated by large motors and switchgear in power generation facilities.

• Optimized Propagation Delay: Emerson specifies the 4.5-foot length to match the timing requirements of the Ovation local bus. Using the factory-correct length prevents "ghost" signals and communication timeouts that often occur with unauthorized third-party cable lengths.

• Robust Mechanical Locking: Standard DB9 screws secure the cable against high-vibration industrial environments. This mechanical lock prevents intermittent contact failures that could otherwise trigger false system trips or I/O communication loss.

FAQs

• Can I use a standard DB9 serial cable instead of the 5A26141G06?

  No. Standard serial cables lack the 75 Ω coaxial core required for the Ovation 50 kHz carrier signal. Using a non-coaxial cable will cause signal reflections, resulting in intermittent I/O communication errors or complete bus failure.

• Why is the length fixed at 4.5 feet?

  Emerson engineers the Ovation local bus around specific timing and capacitance parameters. The 4.5-foot length (G06) ensures the signal reaches its destination within the required microsecond window without reflecting back and interfering with subsequent data packets.

• What are the best practices for grounding this cable?

  Ground the cable shield at the controller side only. This "single-point" grounding strategy prevents circulating currents (ground loops) from interfering with the low-voltage communication signals between the controller and the I/O rack.

• How does this cable handle oil or chemical exposure?

  The 5A26141G06 features an industrial-grade PVC jacket. This material resists oil mist and common chemical vapors found in petrochemical and water treatment plants, preventing the jacket from cracking or becoming brittle over time.