APEX Pump Controller

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The APEX Pump Controller automatically controls up to three pumps connected to variable speed drives, soft starters or across the line starters. Perfectly suited for new installations or to retrofit and upgrade existing pumping applications. The pump controller is easily configured by a Wizard at power-up. The Wizard steps you through the configuration process by asking questions about your application.


  • Level control using up to 5 floats or liquid level transducer with or without backup floats
  • Continuous level control using a 4-20ma DC signal proportional to level
  • Force Main lift station controller with pressure indication
  • Pressure Controller using a 4-20ma DC signal proportional to pressure with low suction pressure


  • Control up to 3 motor starters/soft starters or variable speed drives
  • High resolution 7” color graphical touch screen with all setup, status and graphical representation of your selected application
  • Level and/or Pressure engineering units are entered as desired up to 5 characters
  • Unique industry leading set up Wizard allowing for a simple question and answer format to configure the Apex. The controller will be automatically configured and ready to operate based on your response to the Wizard questions.
  • UL508A listed
  • Force Main mode will automatically set the minimum speed needed to produce flow
  • All alarms displayed in English with a fault history table that can be saved to a memory stick, CVS format
  • Status of input and output signals displayed on the touch screen for ease of troubleshooting
  • “Factory Number”, unique to APEX, that allows ESSCO to determine your exact configuration and assist in any set up problems
  • Alternation via cycle, time or no alternation
  • Lead pump alternation cycles or time can be set per pump to allow equal run or weighted run time for staging service intervals
  • Pumps being serviced can be disabled via the touch screen removing it from the alternation sequence
  • Provision to accept fault indication from a seal fail relay, over temperature relay, and VFD fault or starter overload
  • Multiple password protection
  • All settings and adjustments are via the touch screen
  • Dry contacts for various alarm conditions
  • Pump runtime hour meters
  • Easy to access industrial terminals for all field control connections
  • Internal circuit breaker to remove AC power
  • Top mounted beacon LED light to indicate alarm condition. Steady or flash mode via a jumper wire
  • Type 4 standard package indoor use with options for Type 4X indoor and outdoor locations
  • Comprehensive manual and wiring diagrams
  • Can be customized for your special application per request

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  • Powerful

  • Intuitive

  • Graphical

  • Easy Setup

  • Extensive Status Feedback

  • Comprehensive Troubleshooting



  • UL Chassis Mount, less horn, silence button and alarm light (16” x 16” )
  • UL Type 4 mild steel painted indoor rating, shown above (16” x 16” x 6” )
  • UL Type 4 mild steel painted, dead front, outdoor rating (16” x 16” x 8” )
  • UL Type 4X Fiberglass indoor rating (16” x 16” x 8 “)
  • UL Type 4X Fiberglass, dead front, outdoor rating (16” x 16” x 8” )
  • UL Type 4X stainless steel indoor rating (16” x 16” x 8” )
  • UL Type 4X stainless steel, dead front, outdoor rating (16” x 16” x 8” )


  • UL Listed 508A

Power Supply

  • 120VAC, 5 Amp

Digital Inputs

  • 24VDC inputs for floats and other status feedbacks

Analog Inputs

  • 4-20ma scalable input. Provisions for externally powered or loop powered sensors

Digital Outputs

  • 2 pole relays, 1 form C contact per pole (1 N.O. and 1 N.C. with a shared common)
  • 8 Amp rated current
  • 15 Amp maximum peak current
  • 250VAC rated voltage
  • 400VAC maximum switching voltage


  • Top mounted alarm light, steady or flash selectable
  • Audible with silence pushbutton
  • Dry contact closure for remote notification

Processor Memory

  • Non-Volatile (no battery)


  • USB port
  • RS232 and RS485
  • Supports Modbus ACSII/RTU Protocol