Lighting Controls Blue Box LT Series Installation, Operation & Maintenance Manual page 14

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1 . 3#18 AWG . Supplies power from transformer
to relay control card .
2 . 14 conductor ribbon cable: carries control signal
between DTC and relay control card (master
panel only) .
3 . 2 conductor ribbon cable: carries control signal
from smacker strip to relays - one per relay .
4 . 10 conductor ribbon cable: carries digital signal
from relay control card to smacker strip .
5 . 5 conductor ribbon cable: carries digital signal
from relay control card to (optional) digital input
card .
6 . 4#22 AWG carries RS-232 signal from (optional)
modem to relay control card (master panel only) .
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GR1416 LT (DOOR OPEN) INTERNAL SCHEMATIC
THE BLUE BOX LT OVERVIEW
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7 . Terminator/terminator pins to terminate bus line .
external connections
8 . 4#24 flat cable from modem to analog phone
jack . Always note phone number of modem .
9 . 2#18 AWG to Blue Box photocell . Up to 300 feet .
10 . Cat . 5 cable with RJ45 connectors links Blue Box
to other digital devices (other blue box panels or
digital switches) .
11 . Contact closure inputs & DI card common
"GND" + 1 #18 per input .
12 . Line and load relay lugs .
For information about cabling for contact closure
switches or occupant sensors . Refer to DI Card
Installation Guide for options and details .
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