Figure 20 figure 21 – Watlow Series 920 Microprocessor-Based Ramping Control User Manual

Page 29

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Output #1 Option D, Terminals 22 - 24

Model #92OA-_

D_ _-_000

Output #1 to

Mechanical

Relay

Load from

6A SPDT Relay

L2

L l

Figure 20 -
Output 1 Mech.

Relay, Option "D",

Wiring Diagram.

CAUTION:

If you use normally

closed contacts of

the mechanical

relay, you may need

to add an external

snubber (Watlow

Part # 0804-0147-

0000) across the

normally closed

contacts to avoid

RF

noise and potential
malfunction.

Nor-

mally open contacts
are protected

internally.

Output #1 Option E, Terminals 22 - 24

Model #92OA-_

E_ _-_000

Figure 21-

Output 1, Trlac,
Option “E",
Wiring Diagram.

Back of the control

15ATriac

NOTE:

Terminal #24 should

not have load wires

connected to it. It is

used only for the
gate of the triac

L2 located on the back

of the control.

How

to Install and Wire, Chapter

4

WATLOW Series 920 User's Manual 29