How many loads should be placed in a circuit line between Powerline 1 and Powerline 2
One load per line
True or false two loads must not be connected in series
True
Device the converts electrical energy to motion, heat, light or sound
Load
How many control devices per line
At least one control device
Locaation and type of contacts
Rung comments
Include numbers on the terminal connection points
Manufacturers terminal numbers
Starts or stops the flow of current by closing or opening contacts of the control device
Signals
Determines the work to be done and the order it to be done
Decisions
Work or Result done
Action
Logic functions
And
Or
And/or
Not
Nor
Nand
Two NO. PB in series
AND logic
NO. PB connected in parallel
Or logic
Both AND LOGIC and OR LOGIC
AND/OR LOGIC
NC (PB) contacts to open circuit (Turn off device)
NOT LOGIC
NOR LOGIC
Extension of NOT LOGIC tow or more NC contacts in series to Control a load
NAND LOGIC
extension of NOT logic
Two or more NC contacts connected in parallel to control load
MEMORY (Latching)
Retaining signal to keep load energized or even after signal removed also known as
Holding or sealing circuits
Auxiliary contacts
Provide memory to circuits –| |–
Troubleshooting
Systematic elimination of various parts of systems, circuits or process to locate a malfunctioning part
Short circuit
Circuit which current takes a shortcut around the normal path of current flow
Dead short
Short circuit that opens a circuit as soon as the circuit is energized or when the section of the circuit containing the short energized
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Chapter 2 Symbols And Diagrams23
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Chapter 5 Control Logic22
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Chapter 6 Mechanical Input Control Devices14
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Chapter 7 Solenoids24
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Chapter 8 Electromechanical Relays10
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Chapter 12 Contactors and Magnetic Motor Starters31
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Chapter 16 Timing and Counting Functions29
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Chapter 21 Semi conductor Input devices18
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Chapter 24 Photoelectric Sensor, Fiber Optics, and Light Based Applications24
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Chapter 14 AC Motors6
