Eaton RTC-50 Instruction Manual download pdf (Page 11)

Instruction Booklet IB 70-8698

Instruction Manual for the Eaton RTC-100

Automatic Transfer Switch Controller

EATON CORPORATION www.eaton.com

Effective December 2009

Active Load Control.

4.1.4 RTC-100 on board Active Load Control

4.1.4.1 Connections

There are 2 relays on the RTC-100 that can be used to actively con-

trol up to 2 loads while connected to the generator source. The con-

nections are on J8 located on the top of the board. Pins 1 and 2 are

the primary load and pins 3 and 4 are the secondary load (see

Figure 5). The primary load has priority over the secondary load.

The loads can be any load that provides a voltage to turn on (i.e.

Air Conditioner, hot tub, etc). The relays will function with a voltage

input as little as 12 Vac/Vdc up to 120 Vac/Vdc. Typical connection

scheme is shown in Figures 6 and 7. The connections must be such

that the grounded side of the voltage source MUST be connected to

pins 2 or 4. The “HIGH” or “HOT” side of the voltage source MUST

be connected to pins 1 or 3. If these connections are reversed, the

load will cycle rapidly rather than remain on.

Pin Locations:

4 3 2 1

Priority 2

Controlled Load

Priority 1

Controlled Load

Figure 5. Connections of Controlled Loads to J8 on RTC-100.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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Eaton RTC-50 Instruction Manual Page 11