Forward and Reverse Circuits

Question 1

What are the four parts of a forward/reverse motor starter?

Answer 1

1. Forward Coil
2. Reverse Coil
3. 1 Overload Relay
4. 1 mechanical Inter Lock

Question 2

What is interlocking?

Answer 2

Physically blocks both coils from closing at the same time

Question 3

In control logic, what does and/or represent?

Answer 3

Normally Open

Question 4

What does Not, Nor, and And represent?

Answer 4

Normally closed

Question 5

What is “and” in control logic?

Answer 5

2 or more N.O buttons connected in series

Question 6

What is “or” in control logic?

Answer 6

2 or more N.O contacts connected in parallel

Question 7

What is “Not” in control logic?

Answer 7

Only 1 N.C contact connected to a load
*sends a signal when not activated

Question 8

What is “Nor” in control logic?

Answer 8

2 or more N.C contacts placed in series

Question 9

What is “NAND” in control logic?

Answer 9

2 or more N.C contacts connected in parallel

Question 10

What is memory in control logic?

Answer 10

Holding contact, Auxiliary contact that keeps sending a signal

Question 11

What is a time delay?

Answer 11

It is used in circuits to provide a time delay either at the beginning or end of applied power

Question 12

What is on delay?

Answer 12

When power is applied there is a delay before contacts change states

Question 13

What happens when power is removed from an on delay time relay?

Answer 13

Contacts will change back immediately

Question 14

What is off delay?

Answer 14

When power is applied contacts change immediately

Question 15

What happens when power is removed?

Answer 15

There is a delay before returning back to original state