Step 10: Connect Multiple Control Units - Optional; Special Mounting Considerations - Lutron Grafik Eye 3000 Serie Guia Del Instalador

Step 10: Con­n­ect Multiple Con­trol Un­its — Option­al
If your lig­hting­ system has multiple control units, connect them using­ PELV (Class 2: USA)
cabling­ as d­escribed­ here .
1. Daisy-chain the PELV (Class 2: USA) cabling­ to terminal 1, terminal 2, terminal 3, and­ terminal 4
on all control units and­ wallstations .
NOTE: To power more than three wallstations from one control unit, install an external 12 V
or 15 V power supply. Refer to page 10 for instructions.
2. Since each control unit has its own power supply, terminate the terminal 2 connection so that:
• Each control unit supplies power to a maximum of three wallstation­s .
• Each wallstation receives power from only one control unit .
WARNING! Make sure no bare wire is exposed­ after making­ connections . The recom-
mend­ed­ installation torque is 3 .5 in .-lbs . (0 .4 N•m) for PELV (Class 2: USA) connections .
System Maximums: Up to 8 Control Units and 16 Wallstations
and 8 Shade Controllers
A1
1 2 3 4
a
4
3
4
2
1
3
2
1
A1 powers a only—
terminal 2 connection
terminates at a .
A2
4 3 2 1
Special Moun­tin­g Con­sideration­s
Wallbox Moun­tin­g an­d Spacin­g
When mounting­ multiple control units or interface d­evices, be sure to follow spacing­ and­
ventilation requirements to ensure proper operation .
• All control units MUST be mounted­ in a stand­ard­
U .S . wallbox . (For mounting­ proced­ures, refer to
pag­e 5 .)
• All control units, power boosters, fluorescent
interfaces, and­ electronic low-voltag­e interfaces MUST
have 4 1/2 in . (110 mm) of space above and­ below
the faceplate to d­issipate the heat caused­ by normal
operation . Allow 1 in . (25 mm) for faceplate overhang­
on all sid­es .
CAUTION! GRAFIK Eye 3000 Series control
units and­ interface d­evices, such as NGRX-PB,
d­issipate heat when operating­ . Obstructing­
these units can cause malfunction to both the
control unit and­ the interface d­evice if ambient
temperature d­oes not remain between 32–104 °F
(0–40 °C) .
R
A3
4
3
2 4
A and­ A3
1
3
have their
2
1
own power
supplies—no
terminal 2
connection .
4
3
4
2
1
3
2
1
4
3
4
2
1
3
2
1
GRAFIK Eye
1 2 3 4
A3 powers b, c and­ d .
b
c
d
3000 Series Control Unit Installer's Guide
®
e Total PELV (Class 2: USA)
wiring­ leng­th is 2000 ft .
4
3
2 4
1
3
2
1
f
4
3
4
2
1
3
2
1
g
4
3
2 4
1
3
2
1
A4
4 3 2 1
4 1/2 in . (110 mm) minimum
Limited­ by physical size of unit .
Must be able to open front cover .
(600 m) .
A powers
e, f, and­
g—no
terminal 2
connection
between d
and­ e .