In what way is a timing relay different from a standard control relay?
Timing relays are a type of relay that delays the switching action for a fixed or adjustable amount of time after a change in the control signal. This allows a…
Contactor Ratings, Enclosures, and Solid-State Types
The National Electric Manufacturers Association (NEMA) and the International Electrotechnical Commission (IEC) maintain guidelines for contactors. The NEMA standards for contactors differ from those of the IEC and it is…
What is the magnetic contactor?
The magnetic contactor is similar in operation to the electromechanical relay. Both have one important feature in common: contacts operate when the coil is energized
What are the uses of latching relay?
Latching relays are a type of relay that can maintain their state (on or off) even after the power is removed. This is because they use a mechanical latch or…
Solenoids and Solenoid Valves – Motor control divides
An electromechanical solenoid is a device that uses electrical energy to magnetically cause mechanical control action. A solenoid consists of a coil, frame, and plunger (or armature, as it is…
Relays – Motor control divides
An electromechanical relay is a type of actuator that mechanically switches electric circuits. Relays play an important role in many motor control systems
Velocity and Position Sensors commonly found in motor control circuits
Tachometer generators provide a convenient means of converting rotational speed into an analog voltage signal that can be used for motor speed indication and control applications.
Temperature Sensors commonly found in motor control circuits
There are many types of temperature sensors that will use various technologies and have different configurations. The four basic types of temperature sensors commonly used today are thermocouple, resistance temperature…
Photoelectric Sensors commonly used
A photoelectric sensor is an optical control device that operates by detecting a visible or invisible beam of light, and responding to a change in the received light intensity.
Proximity sensors commonly found in motor control circuits
Proximity sensors detect the presence of an object (usually called the target) without physical contact. Detection of the presence of solids such as metal, glass, and plastics, as well as…