Rotor | OJ Electronics - HVAC Controls & Drives
  • Industries
  • HVAC Controls & Drives
  • Electric Floor Heating
  • About us
  • Login
  • Deutsch
  • Home
  • AHU
  • Fan
  • Rotor
  • Compressor
  • News & Knowledge
  • Career
  • Support
  • Contact
  • Home
  • AHU
  • Fan
  • Rotor
  • Compressor Drives
  • Product categories
    • AHU
    • AHU Controllers
    • AHU Sensors
    • Power Controllers
    • Room Control
    • Temperature Controllers
    • Fan
    • Rotor
    • Compressor Drives
    • Discontinued Products
  • Contact
    • Contact
    • Find us
    • HVAC Partners & Distributors
    • Subsidiaries & Agencies
  • News & Knowledge
  • Support
  • Career
  • Industries
  • HVAC Controls & Drives
  • Electric Floor Heating
  • About us
  • Login
  • Deutsch
Searching for something?

Home Rotor

Product category:Rotor

An excellent new alternative to geared motors, no torque loss at low or high speed

DRHX is an advantageous new alternative to traditional geared motor solutions. In contrast to geared motors, which lose torque at low and high speed, the stepper motor provides even torque throughout the entire speed range. The linear stepper motor torque curve means that rotor speed can be accurately controlled throughout a much wider range. This enables energy-efficient heat recovery and more precise temperature control.

All-new technology for rotary heat exchangers

The next generation drive for rotary heat exchangers is here. It is based on all-new, patented technology including a field oriented sensorless motor control combined with a stepper motor.

Combining a high-torque stepper motor with field oriented sensorless control brings you a unique new solution – and great efficiency. The drive uses the feedback signal from the motor to ensure that the motor gets exactly the level of current required to achieve the desired speed and torque.

The closed-loop control makes it possible to detect the motor load, and a sophisticated software algorithm allows the drive to detect rotor rotation, eliminating the need for a physical rotation monitor. In brief, field oriented sensorless motor control makes operation more silent, more accurate and more energy-efficient.

The OJ DRHX product range covers the full range from 1Nm to 14Nm in three drive power sizes (55W, 220W and 690W). Four different MRHX steppers motor sizes are available to ensure optimum use of application workspace.

Sensorless rotation monitor

The DRHX is equipped with a patented solution: sophisticated software monitors the rotation of the rotor, which means that no physical/optical rotor monitor is required. Naturally, fewer components also means that you get easier installation.

Sensorless closed-loop control

Combining a high-torque stepper motor with closed-loop sensorless control brings you a unique, patented solution – and great efficiency: The drive uses the feedback signal from the motor to ensure that the motor gets exactly the level of current required to achieve the desired speed and torque.

MRHX stepper motors

Ideal for use with the DRHX drive

The MRHX stepper motor provides an even torque curve throughout the entire speed range from 1 to 250 rpm. The rotor can be accurately controlled over a wide operating range, resulting in energy-optimised heat recovery and precise temperature control.

Direct drive

To achieve correct rotor speed, simply mount a suitable pulley on the shaft of the MRHX stepper motor. Energy loss is reduced due to the non-gear solution, which means that motor power is utilized to its maximum. This also helps prolong the lifespan of the equipment and minimize service costs.

Hygroscopic applications

The OJ solution supports hygroscopic rotors that typically require a higher speed than traditional rotors. The required speed of a hygroscopic rotor is between 25 and 40 rpm. Depending on application and torque requirement, you can either upgrade in motor size or select a larger pulley.

  • DRHX-RS-485 & Analog control (1-8Nm)

    OJ-DRHX RS-485 & Analog control
    Flexible DRHX with Sophisticated Software

    The OJ-DRHX RS-485 & Analog control is equipped with both Modbus RTU, BACnet MS/TP and an 0-10V interface for controlling, making it the perfect choice for refurbishment and much more.

    View product

  • DRHX-Constan speed (1-8Nm)

    OJ-DRHX-Modbus control
    This is the Basic Variant in the DRHX Family

    It still contains all the needed features and of course the new software rotor monitor/guard and silent motor operation

    View product

  • DRHX-Constan speed (1-8Nm)

    OJ-DRHX Constant speed
    Accurately Controlled Rotor Speed

    The Constant speed variant is the new member of the DRHX family designed with simplicity in mind.

    View product

  • MRHX-3P01N, 1Nm

    OJ-MRHX
    Stepper Motor for Rotary Heat Exchangers

    Along with our OJ-DRHX controller, the OJ-MRHX stepper motor program perfectly meets the rotary heat exchanger demands. Being continuously run at low speeds, the MRHX stepper motor ensures a high starting torque and an even torque curve. Also, it has a smaller carbon footprint. Using a stepper motor both eliminates all risks of oil leakage and the use of worn-out components.

    View product

  • OJ-DRHX-Pctool
    Service and Engineering PC Tool

    Service and engineering PC tool for controlling, monitoring, setting up and configuring OJ DRHX products.

    View product

Quick Links

  • Support
  • Contact
  • Customer login

Get our newsletter

Sign-up here

Follow Us

OJ News

AHC-3000 from OJ Electronics
January 2, 2023 How our new AHU control software update will make it easy to connect heat pumps
OJ Compressor Drives
August 12, 2022 How Dedicated Scroll Compressor Drives Can Make Chillers and AHUs More Energy Efficient
OJ at Mostra Convegno 2022
May 24, 2022 Check out our News at Mostra Convegno in Milan
OJ Air2 controller by OJ Electronics
February 16, 2022 OJ Air2 helps make buildings zero-carbon-ready

Headquarters
Stenager 13 B
DK-6400 Sønderborg
Tel.: 73 12 13 14
oj@ojelectronics.com
  • Home
  • AHU
  • Fan
  • Rotor
  • Compressor
  • News & Knowledge
  • Career
  • Support
  • Contact
    • Contact
    • Find us
    • HVAC Partners & Distributors
    • Subsidiaries & Agencies
Copyright © 2001 - 2023 OJ Electronics A/S, All rights reserved. Designed by FORSSTRØM

Privacy PolicyCookie PolicySitemapPress & MediaChange my cookie settings

Zero Company