Lutron Electronics WC-2M-GC, Installer'S Manual, Page: 2 / 16

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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
Contact Closure Input Control Wiring . . . . . . . . . . . .7
Example of Individual Control
(no dedicated stop input) . . . . . . . . . . . . . . . . . . .8
Example of individual Control
(with dedicated stop input) . . . . . . . . . . . . . . . . . .9
Example of Master Control
(with dedicated stop input) . . . . . . . . . . . . . . . . .10
Connecting Multiple Group Controllers . . . . . . .11
Setting the Contact Closure Input Type . . . . . . . . . .12
Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
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.
Description
The WC-2M-GC and WC-4M-GC Group Controllers are
designed to control AC motorized window treatments and
projection screens. Both control single phase, bi-directional
AC motors (three wire motors: open, close, neutral). Two
models are available to control up to two motors (WC-2M-
GC) or up to four motors (WC-4M-GC). Both accept inputs
from controls that provide low-voltage, Class 2, dry contact
closures. Each 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
~