A Single Control,
a Multitude of Functions.

Simplify with the AyrDyneTM monitoring system. The control and functions that you need, the convenience that you want.


  • Multiple Screens – maintenance, VFD setup, DP trending, etc.
  • Password Protected – multiple user groups and user names can be configured
  • System Feedback – voltage, frequency, DC bus voltage, etc.
  • NEMA Rating – Standard AyrDyneTM enclosure NEMA 12. Controller has the ability to integrate into NEMA 4X enclosure.
  • Flexible and Customizable User Interface
  • Process Interlocks – can interlock with existing process
  • Remote Signals – dry contact, 4-20mA, 0-10VDC, etc.


  • Differential Pressure – can control, monitor, trend, and data log multiple primary filters, pre-filters, after-filters, HEPA filters, etc.
  • Air Volume
  • Air Speed
  • Static Pressure
  • Automatic or Manual Frequency Control
  • Temperature – room/roof fans can be controlled, based on temperature
  • Cleaning System
  • Compressed Air Pressure
  • Safety System Integration, Smoke Alarms, E-stops, Faults, etc.
  • Hand-Off-Auto Control for Rotary Valves and Screw Conveyors
  • Automatic or Manual Speed Control
  • Multiple systems can be controlled by one controller


  • Hour Meters – preventative maintenance can be done based on hour meter; filter life can be assessed
  • Preset Service Intervals (on screen reminders)
  • Downtime Cleaning, Force Cleaning, and Individual Solenoid Control
  • Preset Filter Life Indicator (on screen reminders)
  • Alarm Banner
  • EP System Integration/Monitoring

Standard Features

  • UL Listed per 508A
  • NEMA 12 enclosure, UL type 1 assembly, size to be determined
  • Through the door fusible disconnect switch with appropriate fuses
  • Red and yellow rotary handle, lockable in the off position
  • Control power transformer, main voltage – 120VAC with appropriate fuses
  • Variable frequency drive
  • AyrDyne® controller / monitoring system (5.7" color HMI)
    Base control:
  • System start and stop control
  • Blower on indication
  • Blower fault indication (fault code of VFD will be shown on AyrDyne)
    Variable frequency drive monitoring:
  • Display VFD output frequency, DC bus voltage
  • Display and modify VFD acceleration and deceleration time
    Filter differential and cleaning system:
  • Automatic control of pulse cleaning system with downtime
  • Filter high differential pressure indication
  • Filter differential pressure trending
  • Ability to pulse individual solenoids to aid in troubleshooting
  • Hour meter to indicate blower run time
  • DenTech, Inc. wiring diagrams and layout drawings

Optional Features

    D - Deduct for direct drive:
  • Removal of VFD and associated displays; replaced with IEC contactor and overload
  • No automatic speed control, system will operate at full speed, 60Hz
    P - Adder to integrate and monitor Isolation Valve:
  • Emergency Stop relay w/ 22MM red
  • Emergency Stop button
  • Emergency Stop Reset button
    E - Adder for Bottle Type Suppression System:
  • Emergency Stop relay w/ 22MM red
  • Emergency Stop button
  • Emergency Stop Reset button
  • Provisions to tie in a N.C. dry contact from customer supplied suppression system
    control panel
  • Automatic system shut down via suppression system control panel alarm
    EV - Explosion Vent Burst Indicator:
  • Provisions to interlock the control panel to
    shut down automatically in the event of the Burst Indicator activation
      F – Provision for Fire Suppression Shutdown:
    • Adder for Fire Suppression Shutdown - On-Screen indication of Fire Suppression alarm and shutdown
      M – Adder for Additional Starter (Rotary Valve, Screw Conveyor, etc.):
    • IEC contactor and overload for ≤5HP motor
    • Time delay circuit to allow motor to continue to run after the blower is turned off (if required)
    • 3-pole fuse block and fuses for the motor
      Z – Zero Speed Switch:
    • Provisions to integrate a zero speed switch on a rotary valve or other material transfer device
      DV – Double Dump Valve:
    • Provisions to monitor and control a double dump valve with adjustable modes and cycle times
      L – Adder for Level Indicator Circuit:
    • Provisions to tie in a level indicator
      B – Adder for Broken Bag Detector:
    • Provisions to tie in a broken bag detector
      H – Adder for High Temperature Circuit:
    • Provisions to tie in a high temperature switch
      C – Compressed Air Dump Valve:
    • Adder for valve to dump stored air from cleaning system manifold upon emergency stop
      A – Alarm Beacon & Horn:
    • Include a flashing stack light and audible alarm horn for fault indication
      PD – HEPA Pressure Drop Monitor:
    • Monitor and display the differential pressure of a HEPA filter
    • Adjustable alarm point
    T – Adder for ability to pulse 12+ Solenoid Valves
    ES – Emergency Stop Button & Circuit:
  • Include a 22mm red Emergency Stop button and blue Emergency Stop Reset button on the enclosure door, which is wired to an emergency stop relay
  • De-energize hazardous control voltages
    7P – 7 ½ HP PD Pump Motor:
  • 3-pole fuse block and fuses for the motor
  • IEC contactor and overload for ≤7 ½ HP PD Pump
  • Time Delay Circuit to allow motor to continue to run after the blower is turned off (if required)
    2P – 20 HP PD Pump Motor:
  • 3-pole fuse block and fuses for the motor
  • IEC contactor and overload for ≤20 HP
  • Time Delay Circuit to allow motor to continue to run after the blower is turned off (if required)
    R – Adder for Remote Start/Stop Provisions:
  • Provisions to tie in customer’s N.O. dry contact to start / stop system
    N – NEMA 12 Remote Start/Stop Station:
  • NEMA 12 rated remote station with Start and Stop buttons
    S – Secured Access:
  • Password protect screens to prevent unwanted set point and parameter changes
    U – UL Listed per 698A (Intrinsically Safe Relay)

General Notes

  1. Prices are based on control panel enclosure being NEMA 12, installed indoors, in an area that does not exceed 90°F or decrease below 55°F, and does not receive direct sunlight.
  2. Manufacturers will be at the discretion of DenTech, Inc.
  3. VFD panel does not include any power conditioning devices. DenTech, Inc. shall not be responsible for harmonics fed back into the power grid and / or radiated from equipment.
  4. Prices do not include any applicable sales taxes or freight charges.
  5. Program loaded into AyrDyne® is proprietary property of DenTech, Inc. The AyrDyne controller will be password protected. This password will not be provided and the program loaded into the controller will not be provided separately.