104
Andover Controls
Electrical Installation
External Power
The GE relays are powered by an external 28 VAC source. The LO-2 module has been
designed to utilize this external power source as its own module supply source as well. It
is not necessary that you power the module in this way, however, if the LO-2 is located
remotely from your main power source, it may prove convenient to power the module
locally thereby eliminating the two extra wires necessary to bring power to the module
from the Continuum power supply. It also lessens the load requirements on that supply.
28VAC Relay Power
Connect the output of a 28VAC transformer to the module power inputs as shown:
External Control Power
Externally mounted sensors such as proximity sensors require power to operate as well.
The LO-2 module provides a connection for these devices to receive half wave rectified
24V power as indicated below:
PWR
GND
28 VAC
Transformer
24-30 VAC
This ground connection must be
the same point as the ground
for the Continuum Power Supply
24 VDC (half-wave rectified AC)
to External Sensors
24 VAC
RECT
LO-2
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