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Controls and Concepts
Troubleshooting Controls
Basic Principles of Electricity
Intro to Power
100
What type of device is continuously variable?
Analog!
100
Name 1 con of Manual Controls.
Cons:
- Requires more staff
- Not as repeatable
- Requires training
- Harder data acquisition
100
What senses can be used to tell if there is a problem with the motor?
Sight, Touch, Smell, and Hear
100
Name 1 insulator.
Plastic
Glass
Rubber
100
Where can Direct Current be found?
DC Power is found in power supplies, small electronics, and batteries.
200
What year was the ENIAC created?
1946!
200
What does "PLC" stand for?
Programmable Logic Controller!
200
What tool is used to find the Root Cause?
The 5 Whys!
200
What is Voltage?
The force that pushes electrons in a circuit.
200
Which type of power is stronger?
Single phase or Three Phase
Three phase is more powerful!
300
A longer wire has more _______?
Resistance!
300
Name 1 pro of Automated Controls
Pros:
- Less staff
- Extremely repeatable
- Allows for fine-tuning
- Less need of Process Experts
- Easy data acquisition
300
These are the two types of automation that we focus on in class.
What is Relay Logic and PLC Ladder Logic?
300
What is the Ohm's Law formula?
voltage = current x resistance
300
Where can Alternating Current be found?
In residential wiring and industrial motors.
400
Who created the moving assembly line?
Henry Ford!
400
What type of device has two states, either on or off?
A Digital Device!
400
What HMI color is the motor when it is Manually Off?
Yellow!
400
What is current?
The flow of electrons in a circuit.
400
What type of power creates a rotating magnetic field for induction motors?
Three Phase power!
500
What tool is used to measure voltage, amperage, and resistance?
A multimeter!
500
Why was the ENIAC created?
Artillery range tables!
500
A temperature sensor is this type of device.
What is an analog input device?
500
What can cause resistance?
Things such as material, length, thickness, and temperature.
500
Why does PG&E give us High Voltage (69,000 volts) and not low voltage?
To save money. The higher the voltage the lower the current and the smaller the cables that are needed. Smaller cables cost less.
600
What did Allen Bradley create in 1974?
The Allen Bradley PLC!
600
If a hopper level sensor shows 67% full on the HMI, what type of sensor is it?
Analog!
600
What is the definition of Automation?
A mechanical device, operated electronically that functions automatically, without continuous input from the operator.
600
What type of energy is described below?
An outlet that is being used.
Kinetic energy!
600
What is the purpose of a transformer?
To step up/down the voltage!
700
What are the two types of automation here at WPA?
Relay Logic and PLC Ladder Logic!
700
How does a PLC know the status of an input?
Inputs are connected to input cards and the PLC reads/communicates with the input cards.
700
What does a HMI red diamond mean?
It has a gate open or close alarm.
700
How do you measure current with a multimeter?
Break the circuit and put the meter in series.
700
What type of motor is also known as a squirrel cage motor?
A 3 phase induction motor!
Bonus question for 300+ points:
What are the three components of an induction motor?