SOMFY LT50 CMO Installation Instructions page 2

4. LIMIT SWITCH SETTING
SOMFY strongly recommends using a Tester Cable (T.C.)
Cat. No. 6020086 to set the motor limits, and to ensure
the system is operating correctly before the final electrical
connection is made. Refer to Step 6 "Trouble Shooting
Guide" for any problems encountered.
Two positions have to be set: the UP & DOWN
positions, this is where the rolling shutter or awning
will stop automatically.
Sequence:
Ensure the tester cable switch is in the center "OFF"
1
position, and connect T.C. to motor leads by matching
color codes.
2 Remove the protective cap covering the limit setting
buttons on motor head, and replace when finished.
3 Depress fully both limit switch push buttons. They will
automatically lock in the down position. Operate the T.C.
switch and check that the system operates correctly.
Identify the UP limit switch push button(refer to figure
used for step 1). Press the T.C. switch in the UP direction
until the required position is reached. Set the switch to
the center "OFF" position.
4
Unlock the UP limit switch push button by depressing
and releasing it.
5
Repeat the above operation to set the lower limit.
Check with the switch that the motor stops at the up &
down positions just set.
Always remember to affix the protective cap over the
6
limit switch buttons.
NOTE: Tubular motors are not continuously rated. They
have a built-in thermal overload device which limits their
operation to approximately 5 minutes.
5. WIRING/INSTALLATION RECOMMENDATIONS
A. All wiring must conform to NEC (National Electrical Code)
and local codes
B. Do not wire two or more motors to one SPDT (single pole
double throw switch-NO PARALLEL WIRING).
C. Do not use light switches.
D. Do not wire two or more switches to one motor, without
using SOMFY's multi switch command. Cat. No. 6300427.
NOTE: SOMFY motors conform to IP44 requirements and
as such must be protected against direct weather elements
such as rain, sleet,...etc.
SOMFY reserves the right to void the motor warranty
if the wiring recommendations are not followed.
6. TROUBLESHOOTING GUIDE
SYSTEM DOES NOT RESPOND
- Is the power supply switched on - check any fuses in the
system?
- Is control switch wired correctly? Refer to instructions.
- Are limit switches set properly? Review limit switch settings.
- The thermal protective device may have shut the motor off.
Wait for the motor to cool down.
- Check the wiring between the motor & the switch.
- Disconnect the switch & test the motor with a tester cable.
SOMFY SYSTEMS, INC. reserves the
right to update, change or modify
these instructions without prior notice.
REF. NO. 4500049 / 900245
c AUGUST 1999
SOMFY MEXICO S.A. De C.V. SOMFY MEXICO S.A. De C.V.
Calle 3 No. 47, Loc. E-5
Fracc Ind. Alce Blanco
Nau., Edo. de Mex C.P . 53370
Cat. No. 6020086
Tester Cable Switch
(T.C. switch)
1
2 3
** The motor cable should not act as a direct
conduit for the water to enter the head of
the motor (form drip loops).
GREEN
Power
120VAC 60Hz
GROUND
NEUTRAL
LINE
BLACK
* - reverse the brown
and red wire if the UP
and DOWN movement
do not correspond to the
UP and DOWN of the switch.
THE SYSTEM IS NOT STOPPING
- Is the limit switch crown wheel being driven by the tube (has tube
profile been properly notched)?
- Is motor drive wheel securely fastened to the tube?
NOTE: if the motor is tested outside the tube, the crown wheel
has to be manually turned in order to stop the rotation of the
output shaft.
SOMFY SYSTEMS, INC.
47 Commerce Drive
Cranbury, NJ 08512
UP POSITION
DOWN POSITION
WHITE PUSH
BUTTON
(BLACK WIRE)
YELLOW PUSH
BUTTON
(RED WIRE)
4 5
AWNING HOOD AWNING HOOD
** See note above
BLACK
DECORATOR PADDLE/
TOGGLE SWITCH
RED
BROWN
BROWN*
RED*
BLACK
GROUND
CONNECTED TO BOX
SOMFY CANADA
6315 Shawson Drive, Unit #1
Mississauga, Ontario L5T1J2
6