Grandview Smart Screen User Manual page 5

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Limit settings
The screen is fitted with 2 limit pots which are visible on
the left had side of the motor. The YELLOW pot controls
the up or down movement of the screen's TOP limit and
the WHITE pot controls the up or down movement of the
BOTTOM limit.
Setting the top limit
The YELLOW pot is covered with a BLACK sticker to
prevent accidental insertion of the HEX key which may
lead you to inadvertently change the TOP limit and
damage the screen.
DO NOT REMOVE THE BLACK sTICKER OVER THE
YELLOW POT uNDER ANY CIRCuMsTANCE – IT WILL
VIOD YOuR WARRANTY.
Setting the bottom limit
CAuTION: setting the bottom limit beyond the black
leader may render your screen inoperable and void
your warranty.
To access the WHITE pot, please remove the rubber
grommet beneath the motor on the left-hand side of the
case. Operate the screen to it reaches the bottom limit.
Insert the HEY key into the WHITE pot and turning it
CLOCKWIsE. The screen will visibly drop by approximately
15mm steps for each rotation of the key.
To raise the LOWER limit, operate the screen to it reaches
the bottom limit. Insert the Hex key into the WHITE pot
and turn it COuNTER-CLOCKWIsE. The bottom limit will
rise by approximately 15mm for each rotation of the key
HOWEVER the new limit will only be visible AFTER the
screen has been operated (raised and then lowered again).
Using close contact
Simply connect the Blue and Yellow wires to 'L' of control
system, and the red wire to 'N'. Then using commands
in the control system, screen will open and close to it's
pre-set limits.
J1
1
2
EXTERNAL CTRL 3
4
5
6
6P6C
Dry contact for Central control like AMX or Crestron
UP and Down connect with L of Central control
GND connect with N of central control
UP
(Blue)
L
DOWN
L
(Yellow)
N (Red)
GND