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Pg. 4
Overview - Line & Low Voltage Connections
The EM1400 digital bus allows up to 16 digital devices (not including photo-
cells, or contact closures devices), and may be up to 4000 ft. in length. Refer
to the System Planning Guide in your support CD when planning long bus
lengths (over 500 ft.).
Follow the steps inside the System Start Up Guide to guarantee a successful
network start-up.
Breaker Panel
Relay Panel (slave)
Gutter
Cat. 5 with RJ45s
Relay 1
To Load
120v
Power
277v
Supply
Neutral
[R1]
[R3]
[R5]
[R7]
Digital Switch
EM1400 Series Installation Guide
Outdoor Photocell
(PCO) Roof-Mounted
Facing North
[R2]
[R4]
[R6]
[R8]
Contact Closure
Switch (momentary or
maintained)
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