motor controls

PLC stands for

• people lie to cops

• programmable

  logic controller

• Public Limited Company

Answer explanation

An industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.

What is an example of an analog input

• A motor turning on

• A motor turning off

• A temparture of a bearing

Answer explanation

An analog PLC input is a continuous signal from a field input device to the PLC control system. Analog inputs are characterized by signals with a range of values much greater than just 0 or 1.

What does D.I .stand for

• digital input

• don't interfere

• digital integration

Answer explanation

Digital Input (DI) modules are used in Programmable Logic Controllers (PLCs) and Motor Drives to receive 24-V digital inputs from field sensors and switches. Isolation is used to manage ground potential differences. The input signal is interpreted as a logic high or low.

Digital Output (D.O.) does what 2 things

(pick 2)

• is not needed in PLC programming

• allows you to control a voltage with a computer

• will produce no action

• can turn on a field device (motor,light bulb ect.

What is contactor in a motor control circuit?

• an electrical switch that is often used where single phase motors are used

• is an electrical safety device designed to protect an electrical circuit.

• an electrical device which is used for switching an electrical circuit on or off. It is considered to be a special type of relay.

What is an example of an analog device?

• a light bulb

• RTD (Resistance Temperature Detector)

• a motor

A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by an overcurrent or short circuit.

Is needed in motor control

T/F

• True

• False

A_____is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals.

• contactor

• circuit breaker

• relay

• solenoid

A_______switch is an electrical switch that is often used where a high current circuit, such as a starter motor circuit, is brought into operation by a low current switch.

• solenoid

• light

• disconnect

• smart

What type of contact is this

• N.O. normally open

• N.C. normally close