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Buildings adopt heating, ventilation and air conditioning (HVAC) systems to increase comfort, efficiency and safety of occupants. As HVAC system accounts for 50-60 % of a building's energy use which is quite significant, the use of HAVC drive is recommended for energy saving.

Our Hx2000 HVAC Drives are specifically designed to meet the demands of today’s HVAC systems. The Hx2000 HVAC Drives control the speed of pump, fan and compressor motors used in air handling units, cooling towers, chillers and other HVAC applications.

How to conserve energy in buildings using VFDs for HVAC applications?

  • HVAC (Heating, Ventilation, and Air Conditioning) systems are typically designed for peak load conditions, which vary dynamically.
  • Variable Frequency Drives (VFDs) are implemented for process control in HVAC applications like Fan, Pump and compressor.
  • VFD adjusts the motor's operating speed based on dynamic load conditions
  • Current, Voltage MA 20% speed reduction results in upto 50% saving in power.
  • Thus VFD helps to Conserve energy, improve equipment life and reduce maintenance costs when used in HVAC applications.

The drives not just contribute to reducing energy cost, but also help you to optimise the cost of DDC controllers with their built in PID controllers. These can be used for speed control of the main motor and control other field devices like modulating valves and dampers.

Designed to handle loads from 0.75kW to 90kW, Hx2000 HVAC Drive increases the system’s efficiency by adjusting motor speed to meet comfort parameters.

The Hx2000 HVAC drive features 4 PID for process control, Built-in EMC Filter & Built-in DC Reactor, Time Event Scheduling: Real-Time Clock with built in battery , Multi motor control , Dry Pump and supports most of the building automation communication protocols like BACnet, Modbus-RTU & Metasys – N2.

Hx2000 HVAC Drives are easy to use, install and maintain while maximizing energy savings.

Range:

  • Three Phase 415V - 0.75kW to 90kW

Global Compliance:

  • CE, UL, UL Plenum Rated

Features:

  • Built-in 4 PID
  • Built-in EMC filter
  • Conformal Coating complying to IEC 60721-3-3 class 3C3 (avg)
  • Built-in RTC with Battery for Scheduling
  • Multiple-Motor Control (1 main motor and 8 auxiliary motors)
  • Built-in Payback counter & CO2 emission reduction level indicator.
  • Lubrication & Damper Control
  • Dry Pump Detection
  • Pump Clean
  • Flow Compensation
  • Fire Mode
  • Password Protection
  • Built-in Communication - BACnet, RS-485 Modbus-RTU, Metasys N2
  • Global Specifications Compliant- CE, UL Plenum Rated
  • Interface: 7DI, 5(R) + 1(TR) DO, 2AI, 2AO

Built in 4 PID

  • 1 Main PID & 3 EPID help in controlling the main motor & also other control equipment like Valves and dampers.
  • This helps in precise control of comfort parameters like Temperature, Humidity and Indoor Air quality.
  • Since PIDs are inbuilt in the VFD, DDC controller cost can be optimised.

Scheduling (Time Event: Real Time Clock (RTC))

  • Using RTC, user can program following operating schedules for general or exceptional dates
  • RTC is used so that selected functions can be operated during set time (Possible to set different functions including Fx, Rx, Multiple Acceleration /Deceleration time, multiple frequency & PID, Pre-heat etc.)
  • Using RTC, user can program following operating schedules for general or exceptional dates
  • 4 Time Period module (Weekly)
  • 8 Exception Date module (Day)
  • 8 Time Event module
  • 29 Functions available (FWD, REV, Step Freq., PID, etc.)
  • Summer Time available (Start/End date setting)
  • Date is available in 3 formats (EU / USA / ASIA)

Multi-Motor Control (MMC): Booster Pump

  • MMC is used when a single Drive is required to control multiple motors in pump systems.
  • It can control 1 main motor through PID and 8 auxiliary motors through Drive & Relays, an Ideal cost effective solution for constant pressure / constant flow pumping application.

Dry Pump (Under Load Protection)

  • Prevents pump damage when there is insufficient water in the tank. If Actual load is under the Under Load (UL) Detect curve, Inverter will trigger warning or trip signal to protect the pump.

Payback Counter

  • It displays energy saving information by comparing the average energy efficiency for operation with and without the inverter. The energy saving information is displayed as kWh, saved energy cost and CO2 emission level.

Fire Mode

  • When an emergency such as fire occurs at suction/exhaust fans, without any hardware failure or a critical defect, the drive continuously operates to protect other systems under the set frequency and direction.

Flow Compensation

  • In a system for longer pipes & higher flow rate, causing great pressure drop, this feature helps to compensate for pressure drop by increasing the PID reference.

Pump Clean Operation

  • Scraps, which get built up in impellers of pumps, decrease the efficiency of motor performance. Through consecutive FWD/REV or ACC/DEC operation, the scraps get eliminated.
  • This results in extension of pump lifespan and energy saving. The pump clean mode is initiated by- remote signal, current profile or power profile.
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