APPLICATION
NOTE
For Your Information ...
#45
Using a Photocell with the RadioRA® System
Overview
The RadioRA system has the ability to accept Class 2 dry contact closures to automatically control lights in a
home. There are times when photocell functions are desired so that lighting events change with background light
levels. This can be accomplished by using an external photocell as shown below.
Wiring
The wiring diagram below uses a RadioRA Multi-Function Entry Master Control or a Switch Closure Interface, and
a photocell Manufactured by PLC Multipoint, Inc.
Using the RadioRA Setup Guide or RAMC-MFE Setup and Installation Guide, an input on the RA-SCI or RAMCMFE can be programmed to the MAINTAINED function such that a maintained switch closure will turn a SCENE
ON. The input SCENE turns on when the switch closure is made. When released, the input SCENE returns to
OFF.
For information on purchasing this photocell, contact
PLC Multipoint at:
3101 111th Street SW, Suite F
Everett, WA 98204
(425) 353-7552
Photocell Wiring for Multi-Function Entry Master Control
RadioRA Dimmer(s)
and/or Switch(es)
RF
Multi-Function Entry
Master Control
Model No. RA-MFE
N.O.
6
7
8 N.C.
COM
To 9 VAC Transformer
(Supplied)
PLC Multipoint, Inc.
LC8
Single Level
r
2
1
2
CCO 2
OUTPUTS
5
COM
4
FLASH
FULL
3
CCI 1
1
CCO 1
2
CCI 2
COM +24
1
INPUTS
Green
Scene 1
Green
Ground
Plug-in Transf
T
ormer
Common
PLC Photocell
24 VAC or VDC
(not supplied
by PLC)
PLC Photocell Models Include:
PLC
Number
Housing
PC1A
Indoor
PC5AD
PC9
PC9AD
Outdoor
tr
Skylight
Foot Candle
e
40
400 ñ 3000 FC
Need additional assistance? Call the Lutron Technical Support Center 1-800-523-9466
Please provide exact model number when calling.
Photocell Wiring for Switch Closure Interface
RadioRA Dimmer(s)
and/or Switch(es)
RF
Switch Closure
Interface
Model No. RA-SCI
TM
Coopersburg, P
PA USA
ace
m
Power
Input
Select
Input 5
Input 3
Input 2
Flash
Full
n
Closure
Input 1
Input 2
N.O.
6
7
Input 3
8 N.C.
Input 4
COM
Guide for operating instr
PLC Multipoint, Inc.
LC8
Single Level
r
o
y
COM +24
2
3
4
5
Class 2
connection only
h
AC IN
Green
l
1
To AC Transformer
(Supplied)
Scene 1
Green
Ground
Plug-in Transf
T
ormer
Common
PLC Photocell
24 VAC or DC
by PLC)
PLC Photocell Models Include:
PLC
Number
Housing
PC1A
PC5
PC5AD
PC9
PC9AD
Outdoor
Foot Candle
e
Indoor
Skylight
400 ñ 3000 FC
Operation
SCENE 1: Turn some exterior landscape lighting ON at dusk and OFF at dawn.
1. Using the RadioRA Setup Guide or the RAMC-MFE Setup and Installation Guide, configure CCI 1 on the
RadioRA Multi-Function Entry Master Control (RAMC-MFE) or input 1 on the Switch Closure Interface (RASCI) to the MAINTAINED function for control of the RadioRA Dimmers, Switches or GRAFIK Eye® Control
Units that control exterior landscape lighting.
2. Configure the output circuit of the photocell to provide a maintained ON closure when the photocell senses
its LOW setpoint and a maintained OFF closure when the photocell senses its HIGH setpoint. (Setpoints can
be calibrated to the actual desired light level. See instructions provided with photocell.)
3. Wire CCI 1 and common or input 1 and common as shown in the wiring diagram on page one.
OPERATION: As dusk arrives and the photocell senses that the background light level is reaching the LOW
setpoint, the photocell will provide a maintained ON closure to CCI 1 on the RAMC-MFE or input 1 on the RASCI. The RAMC-MFE or RA-SCI will turn scene 1 ON to its preprogrammed light levels (in this case the
andscape lighting). As dawn approaches and the background light level reaches the HIGH setpoint, the photocell
will turn its closure OFF, which will open the MAINTAINED closure on the RAMC-MFE CCI 1 or RA-SCI input 1,
which will turn scene 1 (the landscape lighting) OFF.
Other inputs may be dedicated to other functions such as timeclock, telephone interface, motion sensor,
pressure pad, etc.
Lutron Electronics Co., Inc.
Worldwide Technical and Sales
7200 Suter Road
Assistance
Coopersburg, PA 18036-1299 U.S.A.
If you need assistance call the toll-free Lutron
Phone: (610) 282-3800
Technical Support Center. Please provide exact
Fax:
(610) 282-3090
model number when calling.
(800) 523-9466 (U.S.A., Canada, and the Caribbean)
Other countries call (610) 282-3800
Visit our Website at www.lutron.com
Lutron, GRAFIK Eye, and RadioRA are registered trademarks of Lutron Electronics Co.,
Inc. © 1998 - 2002 Lutron Electronics Co., Inc.
Need additional assistance? Call the Lutron Technical Support Center 1-800-523-9466
Please provide exact model number when calling.
Lutron Electronics Co., Inc.
7200 Suter Road
Coopersburg, PA 18036-1299 U.S.A.
Made and printed in U.S.A. 6/02 P/N 366-634 Rev. B