Theory Of Operation; Drive Motor (Dm) - Life Fitness Weekly Service Manual

4. Theory of Operation

Drive Motor (DM)

Overview:
The drive motor is a three-phase alternating current (AC) motor driven off of a 300-volt bus supplied by the motor
controller.
The motor converts electrical energy to mechanical energy.
The mechanical energy is transferred to the main roller by means of a drive belt. The drive belt couples the motor
pulley with the front roller pulley. It is tensioned by a spring-loaded tensioner.
The motor is equipped with the thermal cut-off switch. Should the motor start to overheat the switch will open to
prevent heat-related damage to the motor components.
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