4 • PerformanceAlert Gateway I&O Manual
3
Gateway Power
Wiring
The Gateway requires 24VAC power from a Class 2
center-tapped
transformer.
Emerson Climate Technologies Retail Solutions sup-
plies several sizes of center-tapped transformers for power-
ing multiple 16AIs, 8ROs, and other RS485 peripheral
boards of the E2, Einstein, and REFLECS systems.
Refer to your controller’s user manual for information
on how to use the center-tapped transformers listed in
to power multiple RS485 I/O devices for the US and
Canada.
shows how to connect the 56VA and 80VA
transformers to the Gateway power connector.
Input Voltage
24VAC, Class 2, 50/60Hz
Power
5VA
Table 3-1
- Gateway Power Requirements
Three-Board
Six-Board
P/N
640-0056
640-0080
Power Rating
56 VA
80 VA
Table 3-1
-US and Canada Power Ratings for CPC Transformers
Figure 3-1
- Pinout for the 56VA (640-0056) and 80VA (640-
0080) Transformers
