Step 3: Mount The Wallbox; Step 4: Connect Pelv (Class 2: Usa) Cable To The Control Unit - Grafik Eye 4000 Serie Mode D'emploi

Step 3: Mount the Wallbox

1. Mount a standard U.S. wallbox on a dry, flat indoor surface that is accessible and allows for system programming
and operation. See the table below for the recommended wallbox for each model.
Use a minimum depth of 2 3/4 in. (68 mm), preferably 3 1/2 in. (87 mm). Allow at least 4 1/2 in. (110 mm)
clearance above and below the faceplate to ensure proper heat dissipation. Allow 1 in. (25 mm) for faceplate
overhang on all sides.
Control Unit Model
GRX-4102/4502
GRX-4103/4503
GRXSLD-4103/4104
GRX-4104/4504
GRX-4106/4506
GRX-4108/4508
GRX-4116/4516
GRX-4124/4524
GRXSLD-4106/4108
2. Pull the PELV (CLass 2: USA) wiring into the wallbox using the rearmost
knockouts. This will provide the most clearance when mounting the control
unit. Use recommended cable as specified in "PELV (Class 2: USA) Cables"
on page 3.

Step 4: Connect PELV (Class 2: USA) Cable to the Control Unit

GRAFIK Eye 4000 series control units use PELV (Class 2: USA) wiring to supply power and carry communications
between the panels, control units, and wallstations.
Important Wiring Information
• Lutron requires that you connect (daisy-chain) control units and wallstations with two twisted pairs for operation: One
pair of #12 AWG (2.5 mm
• Use properly certified PELV (Class 2: USA) cable. For a description of recommended cable types, refer to
"PELV (Class 2: USA) Cables" on page 3.
• Install in accordance with all local and national electrical codes.
• The control unit's low-voltage PELV (Class 2: USA) circuit is 24 V
To connect the PELV (Class 2: USA) wires to the control unit:
1. Strip 1 in. (25 mm) of insulation from the PELV (Class 2: USA)
cable in the wallbox.
2. Strip 3/8 in. (9.5 mm) of insulation from each wire.
3. Connect the twisted pair for low-voltage power wiring to terminal
1 (common) and terminal 2 (24 V
NOTE: You will daisy-chain this low-voltage power wiring to
wallstations and/or other control units. Refer to pages 8 and 9.
4. Connect the twisted pair data link to terminal 3 (MUX) and
terminal 4 (MUX) of the control unit.
NOTE: You will daisy-chain this data link to wallstations and/or
other control units. Refer to pages 8 and 9.
5. If shielded wire is used, connect the drain wires to each other
or to terminal D on the wallstation, if present. Do NOT connect
drain wires to earth/ground.
WARNING! Make sure no bare wire is exposed after
making connections. The recommended installation torque
is 3.5 in.-lbs. (0.4 N•m) for PELV (Class 2: USA) connec-
tions.
R
Wallbox size
2-gang wallbox*
3-gang wallbox*
4-gang wallbox
2
) for the low-voltage power wiring, and one pair of #22 AWG (1.0 mm
) on the control unit.
* Y ou may substitute two single-gang wallboxes for a
2-gang wallbox, or three single-gang wallboxes for a
3-gang wallbox.
Single-gang wallbox (Lutron P/N 241218);
4-gang wallbox (Lutron P/N 241400).
3.5 in.
(87 mm)
3.75 in.
(95 mm)
.
GRX-CBL-46L
GRAFIK Eye 4000 Series Control Unit Installer's Guide 7
®
7.9 in.
(200 mm)
2
) for a data link.
PELV
(Class 2: USA)
cable
1.0 in.
3/8 in.
(25 mm)
(9.5 mm)
Terminal 1
Terminal 2
Terminal 3
Terminal 4
Drain/daisy chain
Emergency/daisy
chain