Motor Control

Electric motors are highly effective and reliable drivers of machinery and other types of equipment. However, motors fail at times. Electric Motor manufacturers have found that overloading is the number one cause of motor failure. Thirty percent of all motors fail due to overloading. An Electric motor is overloaded anytime …

Solid State Timer Solid State Timers come in many shapes and sizes. The most common timers used in industry: ON-delay solid-state timers and the OFF delay solid-state timers. ON Delay Timer Connection The on-delay solid-state timer relay is a two-piece device in which one part of the device is the …

Time Delay Relay Some or all industrial control systems need timing operations. Timing devices are used to cut on or off pilot devices at a preset time. Time delay relays and solid-state timers similar and are used to provide the desired delay and timing functions. Timers are constructed with dials, …

Proximity Sensor Working Principle A proximity sensor is an electronic solid-state device used to indicate the presence of an object without making physical contact.  The proximity sensor is a very useful device in hazardous areas such as oil refineries and not so hazardous areas such as car door detection systems. Proximity …

Industrial Push Buttons Push buttons, shown in figure 1, are the most common type of control devices found in industrial facilities. Almost all industrial machines contain push buttons even if the facilities operation is to set to run automatically. Typical push buttons are momentary meaning they are designed with a …

Motor Contactors and Motor Starters are pilot devices used to control large current loads. Large current loads such as heaters, parking lot lights, and electric motors require a large amount of current during startup. To avoid exposing the operator and light-duty control devices, such as common household light switches to …

Control devices like push buttons, limit switches, and pressure switches are connected into a circuit to attain a logical function in a predetermined manner. All control circuits are basic logic functions or combinations of logic functions. Logic functions are common to all areas of industry. The subjects that utilize the …