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The smooth starting of a conveyor belt system is accomplished using torque-control equipment, either mechanical or electrical or a combination of the two. Below is the list of equipment combinations used to ensure a smooth start-up.
| Description | Starting Factor | Detail | |
|---|---|---|---|
| AC Induction Motor with Reduced Voltage Starting and Direct Coupling | Using the previous base case of the AC induction motor with direct coupling, and adding an electrical starter that can apply reduced voltage to the motor stator, we have the most common type of drive system for mining conveyors. Since the AC induction mot... | ||
| Wound Rotor AC Motor and Direct Coupling Drive | The Wound Rotor AC motor is a traditional conveyor drive for medium to large conveyors. It is often the drive of choice for conveyor starting for large conveyors, difficult conveyor profiles, or repeated start applications. The wound rotor motor is a spec... | ||
| DC Motor and Direct Coupling | Prior to the introduction of AC distribution system into coal mines in the 1950s and 1960s, the DC Motor was the most common type of conveyor drive. DC motors are commonly available in series, shunt, and compound windings. The motor rotating armature is w... | ||
| AC Induction Motor with FVNR Starting and Variable Fill Hydrokinetic Coupling | By adding a system for controlling the fill of the fluid coupling during starting and running, the variable speed and controlled torque requirements of some complex conveyors with a hydraulic drive system are addressed. Again, the AC induction motor with ... | ||
| AC Induction Motor and Variable Mechanical Transmission Coupling | Horsepower is the product of torque multiplied by speed. For an AC induction motor prime mover with constant speed, the driven belt speed and torque is a function of the speed reducer ratio and drive pulley diameter. A variable mechanical transmission dri... | ||
| AC Induction Motor with Full Voltage Starting and Fixed Fill Fluid Coupling | 1.6 | This method of conveyor drive has become the most common base case for medium to large conveyors configured for starting duty and simple belt profiles. The fixed fill fluid coupling is normally mounted mechanically between a normal AC Induction motor and ... | |
| AC Induction Motor with Variable Frequency Control and Direct Coupling (VFD) | 1.6 | In this method, a simple AC induction motor Is coupled through a speed reducer to the drive pulley while an electronic controller applies a synthesized AC waveform to the motor stator. The AC motor operating speed is a function of the number of stator pol... | |
| AC Induction Motor with Full Voltage Starting and Direct Couplings | 3 | The most common electric motor for driving belt conveyors is the alternating current squirrel cage induction motor. The AC induction motor utilizes current applied to stator windings arranged in pole groups which induces power into the rotor windings. The... |
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