 About this section:
Electric
motors are available to suit most applications. Electric Motors
have multiple variables to consider when making a selection.
Understanding the terms used with electric motors is important to making a selection.
Basic Electric Motor Terms:
- Horsepower: Determined by the equipment requirements, total
load, operating conditions, and speed.
- Voltage: The voltage of a motor is determined by the supply to which it is attached.
The common voltages are 115, 200, 208, 230, 460, 575.
- Phase: The most common power supplies are either single- or three-phase.
- Common Motor Types: Totally Enclosed(TE), Totally Enclosed
Non-Ventilated(TENV), Energy Efficient (EE or XL),
or Totally Enclosed Fan Cooled (TEFC).
- Cycles: 60 Hz (cycles per second) AC power is common
throughout the US and 50 Hz is common in many foreign countries.
An example of the motor designation is:
1/2 HP- 230V- 3 Ph.60 Hz. TEFC or 1/2HP/230V/3Ph/60 Hz. TEFC
This is
translated as 1/2 Horsepower, 230 Volts, 3 Phase, 60 Hertz, Totally
Enclosed Fan Cooled.
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Additional Information for Motor Selection |
Horsepower Help
- Horsepower ratings in the catalog and website are calculated according to the
standard speed listed for that conveyor. When increasing the speed, more horsepower may be needed. As a rule of thumb, it will
take twice as much horsepower to move a given package at 130 FPM than at 65 FPM. The formula below may help to
determine the approximate power requirements :
HORSEPOWER IN CATALOG CHART (based on 65 FPM)
X YOUR DESIRED SPEED( In FPM)
65
Example:
- Model TA, 11 ft long requires 1/2 Hp motor at 65 Feet per minute for a total load of 320 pounds.
- You desire your conveyor to operate at 90 Feet Per Minute.
- Calculate as follows: (1/2 X 90) / 65 = .69
- You should select the next highest horsepower or 3/4 Hp.
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This formula may be used to give you a good estimate. Ask us to do a
complete horsepower calculation is you have any concerns.
- The service life of a conveyor running at a higher speed may be shortened considerably.
- Most conveyors are not designed to run over 200 FPM. When they do, some parts may need to be balanced to prevent
excessive vibration, and special bearings may be required.
- The type of belting used on a conveyor may also need to be considered.
- NOTE: Pallet handling conveyors generally operate at 30 FPM and 30
may be substituted in the denominator of the formula
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| Motor Types |
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- Totally Enclosed: A motor enclosure, which
prevents free exchange of air between the inside and the
outside of the enclosure but is not airtight. This is the
standard motor on many conveyors..
- Totally Enclosed Fan-Cooled: Provides for exterior
cooling by means of a fan integral with the motor, but
external to the enclosed parts.
- Totally Enclosed Non-Ventilated: Has no provisions for external cooling of the enclosed parts. The motor is cooled by heat radiation from the exterior surfaces to the surrounding atmosphere.
- Energy Efficient: Energy efficiency motors are
specially designed to be more effective at converting electrical input to mechanical output.
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