Description
The GRX-4M-GC Group Controller is designed to control
up to four AC motorized window treatments and projection
screens. The Group Controller will control single phase, bi-
directional AC motors (three wire motors: open, close,
neutral). The Group Controller accepts inputs from Lutron’s
GRAFIK Eye®3000 and 4000 Series Controls and also
from controls that provide low-voltage, Class 2, dry contact
closures. The Group Controller has individual motor control
inputs as well as a master control input. This allows
individual control of each motor or control of all motors at
the same time.
Ratings
Input
110–127 V~, 60 Hz Single Phase
20 A maximum input current
Load Capacity
5 A, 1/4 HP motor load per channel @ 120 V~
2
Table of Contents
Description and Ratings . . . . . . . . . . . . . . . . . . . . . . .2
Important Information . . . . . . . . . . . . . . . . . . . . . . . . .2
System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Determine a Mounting Location . . . . . . . . . . . . . . . . .4
Pre-installation Motor Wiring Check . . . . . . . . . . . . . .5
Line-Voltage Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Configuring the Motor Direction for
Open and Close Functions . . . . . . . . . . . . . . . . . . . . .7
Setting the Group Controller Address . . . . . . . . . . . .7
Connecting the GRAFIK Eye Communication Link . . .8
Connecting to a GRAFIK Eye 3000 Series Control
Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Connecting multiple Group Controllers to a
GRAFIK Eye 3000 Series Control Unit . . . . . . . . .9
Connecting to a GRAFIK Eye 4000 Series
Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Connecting multiple Group Controllers to a
GRAFIK Eye 4000 Series Control Unit . . . . . . . .10
Verify GRAFIK Eye Control Unit is addressed . . . . .11
Important Information
• Before starting the installation, please completely read
these installation instructions.
• This control must be installed by a certified electrician.
• Install in accordance with all local and national electrical
codes.
• Turn power OFF at circuit breaker or remove fuse
before installing and wiring the controller. Do not wire
with power ON.
• Operating environment should be between 32° F to
104° F (0° C to 40° C).
• Proper short circuit protection and overload protection
must be provided at the distribution panel. You can use
up to a 20 A breaker for your application, where
applicable.
• The Group Controller is only compatible with the
following GRAFIK Eye Control Unit model numbers;
GRX-35xx-x-xx-CPN1622 or GRX-45xx-x-xx-CPN1623.
Setting the load type for a GRAFIK Eye Control
Unit Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Assigning a channel on the Group Controller to
a zone on the GRAFIK Eye Control Unit . . . . . . . . . .12
Contact Closure Input Control Wiring . . . . . . . . . . .13
Setting the Contact Closure Input Type . . . . . . . . . .13
Example of Individual Control
(no dedicated stop input) . . . . . . . . . . . . . . . . . .14
Example of individual Control
(with dedicated stop input) . . . . . . . . . . . . . . . . .15
Example of Master Control
(with dedicated stop input) . . . . . . . . . . . . . . . . .16
Connecting Multiple Group Controllers . . . . . . .17
Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
