Watlow Series PD Ethernet Enabled Temperature and Process Manual de usuario descargar pdf (Pagina 13)

Watlow Series PD ■ 11 ■ Chapter 2 Install and Wire

Warning:

Use National Electric (NEC) or

other country-specific standard

wiring and safety practices when

wiring and connecting this con-

troller to a power source and to

electrical sensors or peripheral

devices. Failure to do so may re-

sult in damage to equipment and

property, and/or injury or loss of

life.

Note: Current transformer (CT)

must be purchased separately.

Note: A current transformer input

cannot be associated with a

process output on Output 1 or 3.

Note: Install a 1kΩ pull-down

resistor for each digital in-

put using voltage inputs.

Note: Install a 10kΩ pull-up re-

sistor for each digital input

using contact closure in-

puts.

Figure 11a — Three Phase using Two Current Transformers

One Digital Input and One Current Transformer Input

PD_ 2-_ _ _ _-_ _ _

Digital Input 1

• Input impedance 10kΩ, dc only

Figure 11b — Voltage input

0-1VÎ (dc) Event Input Low State

2-36VÎ (dc) Event Input High State

Figure 11c — Contact closure

0-2kΩ Event Input Low State

> 7kΩ Event Input High State

1 2 3 4

+5V‡ (dc)

Digital Common

Digital Input 1

10kΩ

Contact Closure

(add a 10kΩ pull

up resistor for each

active input)

1 2 3 4

Digital Common

Digital Input 1 +

1kΩ

Add a 1kΩ pull

down resistor for

each active input

1 2 3 4

Red

WhBk

BkWh

16-0176

Transformer

20mA

3-phase current sensin

up to 300 amp

To CT Input 1 or 2

To CT Common

CT Common

CT Input 1

CT Input 2

Phase

dot

To CT Input 1 or 2

To CT Common

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 29 30

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Watlow Series PD Ethernet Enabled Temperature and Process Manual de usuario Pagina 13

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