Watlow Series 93 Manual de usuario descargar pdf (Pagina 11)

Watlow Series 93 Install and Wire ■ 2.5

Figure 2.5a – 0-5VÎ (dc) Process

Input impedance: 10kΩ

Figure 2.5b – 4-20mA Process

Input impedance: 5Ω

Figure 2.5c – 4-20mA Process: 2-Wire Transmitters

+

+

+

-

-

-

2

5

Transmitter

Power

Supply

DIP Switch Orientation

O

N

1 2

+

-

2

5

Amperes dc

DIP Switch Orientation

O

N

1 2

Volts dc

+

-

3

5

Install and Wire

NOTE:

Successful installa-

tion requires four

steps:

• Choose the con-

troller’s hardware

configuration and

model number

(Appendix);

• Choose a sensor

(Chapter Two and

Appendix);

• Install and wire the

controller (Chapter

Two);

• Configure the con-

troller (Chapters

Three, Four and

Five).

ç

WARNING: To avoid

damage to property

and equipment,

and/or injury or loss

of life, use National

Electric Code (NEC)

standard wiring prac-

tices to install and

operate the Series

93. Failure to do so

could result in such

damage, and/or

injury or death.

NOTE:

When an external

device with a non-

isolated circuit com-

mon is connected to

the 4-20mA or dc out-

put, you must use an

isolated or unground-

ed thermocouple.

ç

CAUTION: Process

input does not have

sensor break protec-

tion. Outputs can

remain full on.

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