Watlow VPAC-BT Remote Mount Transformer Manual de usuario descargar pdf (Pagina 2)

Input

Pot (+) (-)

Transformer Plug

R22

Zero Cross

SSR

- +

Heater

Safety Contactor

if required

Semiconductor

Fuse

Branch Circuit

Fuses

Transformer

Fuses

Primary

Transformer

Connections

(bottom view)

red

black

white

black

240

Volt

120

Volt

Secondary

Transformer

Connections

(top view)

Note:

Input is 250 ohms.

For 5K input, cut R22.

Common

Positive

Pot (+) (-)

Manual Control

12V~(ac)

Common

(center tap)

12V~(ac)

orange

white

violet

Note:

The controls transformer must

be on the same phase as the

load. See wiring diagram. All

hot lines to the transformer

should be fused at 1 amp with

the proper line voltage.

For manual control, a 1KΩ

potentiometer may be connected

to the AT card input terminals.

Watlow offers a Manual Control

Kit, P/N 08-5362. Using this

potentiometer requires removing

the 5KΩ, R2 resistor for higher

impedance.

Bias and gain adjustment is

required when changing from 4-

20mA input to a manual control

input or a voltage input.

Wiring Diagram for VPAC-BT

Remote Mount Transformer

1 2

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Watlow VPAC-BT Remote Mount Transformer Manual de usuario Pagina 2

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