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Wiring

Diagrams

introduction
This booklet has been prepared as a guide to some of the useful ways Allen-Bradley’s manual and magnetic across-the-line starters may be applied. It will also serve as a useful aid where simple wiring systems are to be studied. When applying these diagrams, it is well to remember that the features described in several diagrams may be combined into one toproduce another useful way of applying Allen-Bradley equipment. As you become familiar with the diagrams, most such changes will prove simple. be extremely understanding Exercises of this kind will beneficial to a student’s better of motor control wiring dia-

grams. It is important to note: A particular application must satisfy the needs of the user and comply with applicable codes, laws andstandards before using any of the typical circuits shown in this publication. The symbols used in this booklet were

adopted by Allen-Bradley for use in all its publications. They are in accordance with NEMA standards. The Allen-Bradley Company is very inter-

ested in helping engineers, electricians and students to a better understanding of motor control booklet equipment. furthers It is ourhope that this this purpose.

WIRING DIAGRAMS

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c o n t e n t s
PLATE Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wiring Diagram Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common and Important Terms. . . . . . . . . . . . . . . . . . . . . . . , . . . . Bulletin 600 Manual Single Phase Starters . .. . . . . . . . . . . . . . . Bulletin 609 Manual Starters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bulletin 509 Magnetic Full Voltage Starters . . . . . . . . . . . . . . . . Three-Phase Starters . . . . . . . . . . . . . . . . . . . . . . . . . Single-Phase Using 3-Phase Starter . . . . . . . . . . . Variations With START-STOP Stations . . . . . . . . Step-Down Transformer inControls Circuits . . . Jogging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Two-Wire Control Circuits . . . . . . . . . . . . . . . . . . . . Pump Operation (Backspin and Surge Protection) Sequence Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bulletin 505 Magnetic Reversing Starter . . . . . . . . . . . . . . . . . . . . Three-Phase Starters. . . .. . . . . . . . . . . . . . . . . . . . . . Push Button Variations . . . . . . . . . . . . . . . . . . . . . . . . Jogging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti-plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bulletin 520 Multi-Speed Motor Starters. . . . . . . . . . . . . . . . . . . . 1 thru 4 5 thru 13 PAGE 2 4 6 7 8 11 12 14 15 1 8 19 20 23 24 26 27 28 31 32 34 35

14 thru 17 18 and 19 20 thru 24 25 26 and 27 28 thru 32 33 and 34 35 thru 37

38 and 39 40 thru 44 45 46 and 47 48 49 thru 51

Key to Symbols
Shown here are the symbols most often used in this book. Although the explanations accompanying the diagrams describe thedevices used, familiarity with the various symbols will lead to a quicker understanding of each circuit. The symbols, device designations, and abbreviations Standard Publication/No. in this book are taken from the NEMA ICS-1-1978.

Wiring Diagram Symbols
Symbol Device Symbol

Fuse
Relay
Single Winding I Tapped

General

Coils

and Switch Coils
Permanent Magnet Economized

NE

-Neon

FL - Fluorescent

--@IIndicating Lights
OP P - Purple - Opalescent

General
0 A B C G R W Y Oranoe Amb& Blue Clear Green Red White Yellow

Normally Closed (N.C.)

#S#+i?
Main Auxiliary

Normally

Contacts

Open (N.O.)

T
Main

-it-

=E

+

Auxiliary

3 Phase Squirrel Cage Induction

Time Closing

T
N.O.T.C. N.C.T.C.

Motors
Single Phase

Time...