Sensor Logics 1 & 2

Control Logics, Valves and Relays

Which of the following is not a component of a ladder diagram

Valvle

Which of the following elements describes two or more normally closed switches in series?

NOR

Ladder diagrams are read from left to right and top to bottom with the input devices on which side?

Left

Devices called __________ often serve as the brains of an automated machine.

controllers

Which type of logic element uses a control relay?

Memory

What happens if 1PB is pressed and opens the circuit?

No effect output remains energized

On a ladder diagram, what are the electrical wires that connect the circuit called?

Conductors

Which of the following is an element of control logic?

All of the above

NOT logic is formed by __________.

One normally closed switch

OR logic is formed by __________.

Two normally open switches in parallel

Ladder diagrams only show control devices.

True

Which one of the following logic elements describes a circuit with two normally open switches in series?

AND

How should the hose connections be made to make the

cylinder extend when valve solenoid SOL-1A is energized?

1 to A, 2 to B, and C to P

An example of memory logic by a control relay is __________.

Seal-in circuit

What device provides the means by which electrical circuits control pneumatic or hydraulic systems?

Solenoid-operated directional control valve

If this solid state relay were faulty, what would the output at terminals 1 and 2 be?

High

What will happen if the manual override button is pressed on this solenoid operated DCV?

The spool will shift

It is standard practice in industry to carry the flow of electricity to a solenoid through __________.

Relay contacts

In this circuit, what is the purpose of 1CRB?

Which of the following is an application of a relay?

Which of the following is not a component of a relay?

Valve

One method of de-energizing a seal-in circuit is to use __________.

A stop push button

A power diagram is needed with a ladder diagram to __________.

Determine the power device operation when the output is energized

What does the reading on the DMM tell you about the input control circuit?

Control voltage is working correctly