Department of Agricultural Engineering
The controls described in this bulletin meet the functional demands of automation on the farm-"stop" and "start" sequence, flexible connections, delays, low voltage signalling, unitization, and equipment protection. In meeting the functional demands, these controls overcome the limitations of custom designed control circuits using standard components. Also by allowing use of hours instead of horsepower, these controls normally permit installation of an automatic feeding system at a lower cost than comparable push button mechanized systems.
This low voltage, flexible sequence control system is composed of power relay units, a master unit, a systems protection unit, and, in special instances, a reversing motor unit. The circuitry for the four basic units of this control system is explained in detail and shown in the schematics and photographs.
low voltage sequence controls, farm automation, mechanized feeding systems
South Dakota Experiment Station, South Dakota State College of Agriculture and Mechanical Arts
Paine, M. D.; Winterfeld, H.; and Moe, D. L., "Low Voltage Flexible Sequence Automatic Controls" (1961). Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011). 500.