Watlow Series 922 Retrofit Manual de usuario descargar pdf (Pagina 33)

How to Install and Wire, Chapter 4

WATLOW Series 922 User's Manual

Control

Shield

C.M. Line

Filter

D.M. Line

Filter

Line Load

MOV

Ground

Wiring Guide

Line Filtering Configurations for Controls

These three diagrams show you filter configurations for removing input power

noise. Choose the one best suited for your system if you are unsure which one

to use. For very "dirty" or critical application -use microcomputer-regulated

power supply or Uninterruptable Power Supply (U.P.S.)

Figure 9 -

Differential Mode

Filter Diagram

Figure 10 -

Common Mode

Filter Diagram

Figure 11 -

Combination

Differential-Common

Mode Filter Diagram

NOTE: To prevent

ground loops, do

not fasten common

mode line filters or

filters with metal

cases to metal that

is at ground poten-

tial. Doing so will

reduce filter effec-

tiveness.

NOTE

: Keep filters

12 inches or less

from the control.

Minimize the line

distance where

noise can be

reintroduced to

control.

Control

Shield

D.M. Line Filter

Line Load

Ground

Control

Shield

C.M. Line Filter

Line Load

Ground

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Watlow Series 922 Retrofit Manual de usuario Pagina 33

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