Watlow-electric Micro-Based Autotuning Control SERIES 980/985 Manual do Utilizador descarregar pdf (Página 21)

WARNING:

Install high or low temperature

limit

control protection in systems where an

overtemperature

fault condition could present a fire hazard or other hazard.

Failure to install temperature limit control protection where a potential hazard

exists could result in damage to equipment and property, and injury to personnel.

CAUTION:

Do not jumper load power from the control power terminals. Doing so will cause

your control to be more susceptible to electrical interference from load

switching.

See Noise Guidelines at the beginning of this chapter.

115

Volt

Control Power

Earth

Ground

Load

Power

Fuse

L2 L1

Iif

Fuse

Y!Ef

Heat

Load

Relay Contactor

flfi

coil Power

Limit Sensor

Figure 24

System Wiring

Example

CAUTION:

With

Watlow

mercury relays, load

must have a unity power factor.

For RESISTIVE LOADS ONLY.

NOTE

All fuses must be selected for

proper protection in a given

application.

Ll L2

High Liiit

Control

Power

120

YAC

140A-16XX-6000

High

Limit Control

’

Process Sensor

Install

and

Wire,

Chapter

WATLOW Series

980/985

Use's

Manual

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 46 47

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Watlow-electric Micro-Based Autotuning Control SERIES 980/985 Manual do Utilizador Página 21

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