Motor Selection Tool
Welcome to the documentation for Infinitum's Motor Selection Tool. This tool is designed to help you quickly find a compatible Infinitum motor to suit your needs. It also provides additional motor options that match your specifications, as well as estimated energy costs.
Accessing the Tool
Access the Motor Selection Tool by visiting the following URL: goinfinitum.com/motor-selection (opens in a new tab)
Calculator
The blue calculator component allows you to input specific motor parameters including power (hp or kW) and RPM. The power input contains a dropdown menu that allows you to select either horsepower or kilowatts. When the you submit your specifications, the tool will:
- Return a standard motor if your input matches an existing motor in our database.
- Return a standard motor and a custom motor if the your input doesn't match a existing motor. The custom option is a motor modified to most efficiently run at your requested operating point.
Input Limitations
When specifying motor parameters, observe the following value ranges:
| Parameter | Minimum | Maximum |
|---|---|---|
| RPM | 540 | 4500 |
| Horsepower | 1 | 15 |
| Kilowatts | 0.8 | 12 |
Please note that the maximum global torque is set at 60.0 Nm. If your input results in a torque value higher than 60.0 Nm, the tool will display an error message.
Additional Motors Table
Beneath the calculated results, the tool displays an additional table showing all other Infinitum motors that match the input specification (if there are additional motor results). This table is sortable by clicking on the column headers. By default, the table is sorted by a scoring function that ranks motors based on how closely they match the input specification.
Energy Calculator
The tool includes an Energy Calculator which can be accessed by clicking on the "Open Energy Calculator" button. Here, you can enter your Energy Cost ($/kWh), hours of operation per day, and days of operation per week. Upon submitting these details, the motor results are updated with corresponding energy cost calculations displayed at the bottom of the card. If you don't enter any energy inputs, the tool uses default values for calculation.
| Parameter | Units | Default Value | Minimum | Maximum |
|---|---|---|---|---|
| Energy Cost | $/kWh | 0.07 | 0.01 | 100.00 |
| Hours of Operation | Hours/Day | 20 | 0 | 24 |
| Days of Operation | Days/Week | 7 | 0 | 7 |
If you try to perform an energy calculation before performing a basic search, or if one or more fields are empty, the tool will display an error message.
Load Distribution
The Energy Calculator also allows you to input a custom load distribution, which allows more accurate cost estimation for your application. This includes fields for 30%, 50%, 75%, and 100% load. You can then input the percentage of time the motor spends operating at each load level. For instance, a user might run a motor at 100% load 25% of the time, 75% load on the motor 15% of the time, and so on. These load percentages should total 100. If not, default values will be used in the computation:
| Load Level | Default Value |
|---|---|
| 30% | 15% |
| 50% | 35% |
| 75% | 35% |
| 100% | 15% |
Output
The main results cards (standard + custom, or just standard) contain lots of information about the motor(s) that match the input specification. Not only do they display basic motor attributes, but the accordion sections at the bottom of the cards can be expanded to reveal efficiency curves, downloadable datasheets, dimensions, energy costs, and more. To save a custom motor, click the datasheet button within the downloads section of the card.
This documentation will provide further details on the computation methods in subsequent sections.