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Cluster Control Unit

CCU Interface for Maxicom2®

Maxicom2® Cluster Control Units (CCU) serve as an interface between the central controller and field satellites (ESP-MC-SAT Series) on the Maxicom2® system. The CCU acts as the system's “computer-in-the-field,” allowing control of hundreds of sites from one Central Controller.

Schedules are automatically downloaded from the Central Controller to the Cluster Control Unit at a user-entered time. Commands are then sent from the CCU to the appropriate field satellites to control irrigation throughout the irrigation day.

The CCU monitors site conditions constantly and takes action as needed; managing flow demand, pausing or canceling irrigation in the event of rain, etc., or locating and isolating the causes of excessive flow (broken heads or piping breaks). Irrigation data and information (flow logs, alarms, actions taken, etc.) are automatically uploaded to the Central Controller at a user entered time, usually after the irrigation cycle is complete.

The CCU can monitor, communicate to, and manage as many as 28 ESP-Satellite controllers or other field devices via a two-wire (hardwire), wireless radio or Ethernet communications method.

  • CCU-28 operates up to 28 satellites, pulse decoders, or sensor decoders
  • LED display that provides current satellite status
  • Stores and executes schedule instructions from the central computer
  • The CCU utilizes Flo-Watch™ to monitor hydraulic conditions in the field, checking for breaks in system piping, or valve malfunctions. The CCU will automatically identify where the problem is located, initiate valve or mainline shutdown to isolate the problem area, and continue with irrigation for the remaining available valves.
  • The CCU utilizes Flo-Manager™ to monitor and sequence valves scheduled to be turned on, so expected demand does not exceed the hydraulic capacity of POCs.
  • The CCU can start, advance, pause, or cancel schedules according to sensor input (rain, wind, etc) from the field.
  • Communications activity LEDs show current communications status
  • Each unit provides either two-wire or MAXILink™ communication to satellite controllers and sensors.
  • Anti-rust, corrosion-resistant design.
  • UL listed.
  • Three-year trade warranty.


  • Wall mount: drawn steel, seamless, locking, weatherproof cabinets.
  • Pedestal: brushed stainless steel with removable front panel.

Computer Data Path (Computer to CCU)

  • Telephone modem via dial-tone telephone lines.
  • 900 Mhz spread spectrum radios
  • Direct connection (serial cable or short haul modems).
  • Fiber optic cable modem.
  • Wired and wireless (WiFi) Ethernet device servers..

Satellite Data Path (CCU to Satellite)

  • Two-wire path (1500 ohm loop resistance).
  • MAXILink™ wireless radio path (max 4 watt EIRP)
    *wired Ethernet Device Servers

Electrical Specifications

  • Input required: 120 VAC+/-10% @ 0.6A,
    60Hz or 220/240 VAC+/-10% @
    0.35/0.32A, 50Hz
  • Output: 26.5 VAC, 60Hz or 50 Hz, .5A
  • Circuit breaker: NA (Auto-resettable)
  • Poly switch: .65A open (steady state), 1.3A open (surge)
  • Single-point grounding bus bar


  • Powder-Coated Wall Mount
    Width: 11 5/16" (28,7 cm)
    Height:11 1/2" (29,2 cm)
    Depth: 6 1/2" (16,5 cm)
  • Stainless Steel Pedestal
    Width: 11 1/2" (29,2 cm)
    Height: 30" (76,2 cm)
    Depth: 11 1/2" (29,2 cm)