Emotron EMX-R0 pages

Drive system for
rotary heat exchangers

Know-howEmotron EMX-R
and commitment
are always included
Service offer of CG Drives & Automation

Efficient and reliable
•t Robust motor without gear or fan.
•t Integrated electronic rotation sensor –
t eliminates the need for mechanical sensors.
•t High efficiency - No gearbox losses.
•t A wide speed range for maximum usage of t
t the high efficiency in the exchanger wheel.
•t Easy handling since no adjustments or
t settings are required.
•t Selectable direction of rotation.
•t Integrated motor cable.
•t Extensive protection against short circuit, overloading etc.
•t Holding torque – prevents involuntary
t heat transference.

The EMX-R drive system is a range of speed controlled drive
systems for rotary heat exchangers. A system consists of a
motor and a corresponding electronic controller. Uniquely,
EMX-R is equipped with an integrated electronic rotation
sensor, RotoSens™, which eliminates the need for a
mechanical sensor.

The system can also easily handle a conventional mechanical
rotation sensor if so desired. The EMX-R drive systems are
based on the switched reluctance (SR) motor technology.
The SR technology allows the EMX-R motor to drive heat
exchanger wheels with diameters up to 3.5 m without any
need for a gearbox. The result is fewer mechanical wear
parts and therefore a lower Life Cycle Cost (LCC). Also the
efficiency is substantially increased while all gear losses are
eliminated.
The motor can run in both directions and has a permanently
attached motor cable for easier installation. To further
support an easy installation, no adjustments and settings
are required to get the drive system into operation.
For maximum performance and efficiency in a rotary heat
exchanger, low speed as well as high speed is required.
The EMX-R system therefore offers full control over a wide
speed range. To prevent involuntary heat transference,
holding torque is activated in the motor to hold a rotor
still. The drive system learns which rotor requires holding
torque.
The EMX-R drive is available in three different sizes; 15, 25
and 35. The following table illustrates the maximum wheel
diameters in decimeter with a maximum wheel speed of
10 to 12 rpm. The controller is available in two versions;
S (Standard functionality) and E (Extended functionality).
Model E has an extra circuit board for increased
functionality.