GRX-12VDC
12 Vdc Plug-In Class 2 Transformer
Installation Instructions
Please leave for Occupant
LUTRON ELECTRONICS, INC. 7200 SUTER ROAD, COOPERSBURG, PA 18036-1299 U.S.A. (610) 282-3800
GRX-12VDC Power Supply
Installation
Warning: Always turn Off the circuit breaker
or remove the main fuse from the power line
before doing any work. Failure to do so can
result in serious personal injury.
All connections are made to the Class 2/PELV terminal blocks of the
Control Units and/or Accessory Controls.
1.
Turn power Off.
2.
Connect the
black
(
common
) wire of the GRX-12VDC to the
wire that runs from Terminal 1 of the Control Unit to Terminal 1
of the Accessory Control.
3.
Connect the
white-striped
(
12 Vdc
) wire from the GRX-
12VDC to the wire that runs to Terminal 2 of the Accessory
Control.
Do not connect the GRX-12VDC to Terminal 2 of
the Control Unit!
4.
Connect the twisted pair from terminals 3 and 4 of the Control
Unit to terminals 3 and 4, respectively, of the Accessory Control.
Wire the remaining Accessory Controls in a standard daisy-chain
configuration (see Page 2). Do not connect the GRX-12VDC to
terminal 3 or 4!
5.
Restore power to the GRAFIK Eye 3000 Series system and plug
the GRX-12VDC into the 120 V, 60 Hz power source.
CAUTION!
■
The GRX-12VDC is designed for use with GRAFIK Eye 3000
Series systems only.
■
The GRX-12VDC is designed for residential and commercial
applications—indoor use only.
■
Lutron recommends that the GRX-12VDC be installed by a
qualified electrician.
■
Install in accordance with all applicable regulations.
Specifications
Power:
Input: 120 V, 60 Hz
Output: Regulated 12 Vdc, 9.5 W
System Wiring:
Low-voltage Class 2 4-wire daisy-chain of two #18 AWG wires and a
#18 AWG twisted, shielded pair (all four wires available in one cable
from Lutron, GRX-CBL-346S-500).
The GRX-12VDC connects directly to Class 2/PELV wiring.
Description
The GRX-12VDC is a 12 Vdc Plug-In Class 2 Transformer that is
used in GRAFIK Eye 3000 systems when connecting more than three
Accessory Controls to a Control Unit or if your wiring length exceeds
1000 ft. between the GRAFIK Eye Control Unit and the third
Accessory Control. The GRX-12VDC is a regulated power supply
that is capable of supplying power to a maximum of 16 Accessory
Controls.
Lutron recommends these maximum distances from the GRX-12VDC
to the last (sixteenth) Accessory Control: 2000 ft. for #12 AWG and
575 ft. for #18 AWG. Allowable maximum distance depends on the
number of Accessory Controls in the system.
Please refer to Application Note W14 for more information.
