Lennox ML296UH045XV36B Unit Information

Page 15
One revolution
HIGH SPEED COOL (output from controller to motor windings)
MOTOR SPEED CONTROL WITH D.C. PULSE
‐
WIDTH MODULATION
WINDING #1
WINDING #2
WINDING #3
LOW SPEED HEAT/COOL (output from controller to motor windings)
HIGH SPEED HEAT (output from controller to motor windings)
O volts
325VDC
One revolution
O volts
325VDC
O volts
325VDC
WINDING #1
WINDING #2
WINDING #3
O volts
325VDC
O volts
325VDC
O volts
325VDC
WINDING #1
WINDING #2
WINDING #3
O volts
325VDC
O volts
325VDC
O volts
325VDC
Motor speed is determined by the size of the electrical pulse sent to
the motor windings. The longer the pulse, the faster the motor.
One
Pulse
ON PULSE
OFF PULSE
WINDINGS TURNED OFF
The frequency of the pulses to the windings is 20KHz.
DO NOT ATTEMPT TO MEASURE THESE VOLTAGES.
WINDINGS TURNED ON
OUTPUT FROM CONTROLLER TO MOTOR WINDINGS
One revolution
FIGURE 11

Lennox ML296UH045XV36B Specifications

General

Brand	Lennox
Model	ML296UH045XV36B
Category	Furnace
Language	English