Woodward Compressor Controls

    Vertex-Pro Motor-Driven Compressor Controller

      Vertex-Pro Compressor Controller

    The Vertex-Pro is an anti-surge controller for control and protection of industrial-sized, motor-driven axial and centrifugal compressors. This purpose-built controller is available in standard off-the-shelf models for 1-2 recycle loop applications and custom models for 3-4 recycle loop applications.

    OEM-qualified algorithms are used to ensure that proper start sequences are followed, proper and accurate compressor load calculations are used, and proper protection and recovery actions are performed.

    Built on Woodward’s field-proven MicroNet™ platform, Vertex-Pro is available in simplex or dual-redundant models. All models utilize the MicroNet’s compact 8-slot chassis and robust field termination modules. Simplex models include one of every module while dual-redundant models include two of every module, allowing users to perform both bumpless on-line program changes and on-line module replacements.

    Vertex-Pro Controller Versions

    The standard Vertex-Pro models (1-2 recycle loops) are field-configurable, allowing users to configure/select the control algorithm required for the specific compressor loop and application.

    Vertex-Pro-C models (3-4 recycle loops) are custom programmed by Woodward engineers, ensuring that the correct control and optimization algorithms are used to meet the specific application requirements.

    For critical applications requiring increased reliability and availability, users can order dual-redundant control models, which have manual switch-over and automatic fail-over capabilities. These redundant control models also allow users to replace/repair modules and perform program changes while the compressor is operating on-line, thus greatly improving system availability.

    Integrated Package Replacement

    As a replacement for old or obsolete anti-surge controllers, the Vertex-Pro can be configured to function like those controllers but with two-times faster scan rates, improved surge anticipation logic, and one integrated package for all control functions (anti-surge control loop 1, anti-surge control loop 2, performance control, and dual-redundant control).



    The following I/O list is utilized by Vertex-Pro standard models only. Vertex-Pro-C models are customized to the specific application and may use the same, or more or less I/O signals, depending on the application.

    Vertex-Pro inputs and outputs (I/O) are arranged into pre-defined and configurable groups. Pre-defined I/O is fixed, based on its use in all or most applications. Configurable I/O is selected, based on the specific needs of each application.


    Power Sources (Simplex or Redundant)

    • AC/DC—Power Supply: 88 to 132 Vac / 47 to 63 Hz or 100 to 150 Vdc
    • HVAC—Power Supply: 180 to 264 Vac / 47 to 63 Hz


     Discrete Inputs (48)

    One discrete input is assigned a pre-determined function and 47 are configurable:

    • Emergency Shutdown (1)
    • Reset
    • Configurable Discrete Inputs (47)


     Analog Inputs (24)

    All 24 are configurable:

    • Compressor Flow Signal: 4 to 20 mA
    • Compressor Suction Pressure Signal: 4 to 20 mA
    • Compressor Discharge Pressure Signal: 4 to 20 mA
    • Compressor Suction Temperature Signal: 4 to 20 mA
    • Compressor Discharge Temperature Signal: 4 to 20 mA
    • Configurable Analog Inputs (24): 4 to 20 mA



    Discrete Outputs (24)

    One discrete output is assigned a pre-defined function and 23 are configurable:

    • Motor/Compressor Shutdown (1)
    • Motor/Compressor Alarm
    • Configurable Discrete Outputs (23)


    Analog Outputs (8)

    All 8 are configurable:

    • Anti-surge Valve: 4 to 20 mA
    • Configurable Analog/Actuator Outputs (8): 4 to 20 mA


    Communication Ports (Simplex or Redundant)

    • Ethernet ports (OPC or Modbus®
    • Serial RS-232, RS-422, RS-485 Modbus port


     ® Modbus is a trademark of Schneider Automation Inc.


           Vertex-Pro control capabilities include:

    • Motor Drive Interface Logic
    • Inlet Throttle Valve Control
    • Inlet Guide Vane Control
    • Recycle Valve(s) Control
    • Anti-Surge Control
    • Performance Control (suction or discharge)
    • Surge Anticipation Logic
    • Surge Protection Logic
    • Surge Recovery Logic




      Vertex-Pro features include:

    • Integrated controller
      • 1-4 loop anti-surge control
      • Motor current limiter
      • Performance control
      • Load sharing
    • Incipient surge detection logic
    • OEM-qualified algorithms
    • Standard off-the-shelf availability
      • 1-2 recycle loop models
      • Field configurable
      • Field serviceable
    • Increased availability
      • Dual-redundant models
      • On-line repair
    • Open architecture
      • Ethernet and serial interface
      • OPC and Modbus® protocols
      • Control Assistant service tool included
    • User-friendly service tool
      • Configuration and operation
      • Password-based security
    • Standard 17" (432mm) panel-mount touch screen for CCT
    • Replaces CCC Series-3 and Series 3++
    • API 617 compliant


    ® Modbus is a trademark of Schneider Automation Inc.


    • Ambient Air Temperature Range: -0 °C to 55 °C (32 °F to 131 °F)
    • Shock: Meets US MIL-STD-810C, method 516.2-1, procedure 1B
      (15G, 11ms half-sine pulse)
    • Vibration: Lloyd's ENV2 test #1
    • Emissions: EN55011, Class A, Gr 1
    • Immunity: EN50082-2




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