Relay Overview - Lighting Controls Blue Box LT Series Installation, Operation & Maintenance Manual

10
BLUE BOX LT 1404/1408
INTERNAL SCHEMATIC
1 . 3#18 AWG . Supplies power from trans-
former 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 . 5 conductor ribbon cable: carries digital
signal from relay control card to (optional)
digital input card .
5 . 4#22AWG carries RS-232 signal from
(optional) modem to relay control card
(master panel only) .
6 . Terminator pins . Add terminator here if this
is the first or last item on a bus (follow the
"System Start-Up & Cabling Guide") .
For more information about external hook-ups,
refer to GR 1404 LT Installation Guide .

RELAY OvERvIEW

1 . Low voltage connector .
2 . Status indicator LED .
3 . Quick removal slot .
4 . High conductivity terminal block .
SnapLink Latching Relay: Normally closed latch-
™
ing (NCL), UL listed for 30 amps lighting (ballast,
HID) at 277v, 20 amps at 347v and 20 amps
Tungsten at 120v, 18,000 amp SCCR at 277v,
rated 250,000 on/off cycles, 3 yr . warranty .
THE BLUE BOX LT OVERVIEW
To optional To optional
Modem DI Card
master panels
4
only
5
To DTC
6
2
3
1
3
1
4
2