LEGRAND Pro 21 7756 28 User manual

Pro 21TM
Individual radio shutter switch
with slat orientation
7756 28
Characteristics
LE00987AA
Voltage
Frequency
RF
Frequency
Range
50 - 60 Hz
868.3 MHz
approximately 200 m in
free field
+ 5°C at + 45°C
100 - 240 V±
2 x 1.5 mm2
or 1 x 2.5 mm2
110 V±
230 V±
1 x 270 VA
1 x 500 VA
Note:
an individual radio shutter switch with slat orientation controls a single motor.

L  50 mm
L =40 mm
L <40 mm
2
Characteristics (cont.)

3
8 mm
L
N
Cabling
Safety instructions
This product should preferably be
installed by a qualified electrician.
Incorrect installation or use may
cause electric shock or fire.
Read the instructions before installing.
Take into account the specific installation
location.
Do not open the unit. Legrand products
must only be opened and repaired by
qualified personnel, authorised by
Legrand. Unauthorised opening or repair
will cancel all liability, and will invalidate
the guarantee and any right to replacement.
Use only LEGRAND brand accessories.

4
Control keys
LEARN key LEARN indicator light
Description Factory settings
When first switching on, the product can
be controlled in mode by all the
group shutter controls in the "In One by
Legrand" installation.
This facility enables to check the correct
operation and connection of all shutters.
A double press on the LEARN(1) key
cancels this general control function.
(1) Programming or learning key.

5
Operation
Shutter
- Opening
- Shutdown
- Closing
<0.4 s
<0.4 s
<0.4 s
STOP

6
Operation (cont.)
Slat orientation
- Opening
- Closing
>0.4 s
>0.4 s

7
Operation (cont.)
Example of creation of a general control:
controlling an individual shutter switch using a group shutter switch.
Transmitter
Group radio shutter switch
E.g.: 7756 31
Receiver
Individual radio shutter switch
E.g.: 7756 28

8
Operation (cont.)
Transmitter
Open the scenario
Receiver(s)
LEARN
indicator light
Note:
learning is only necessary on the UP key – STOP and DOWN are learned automatically.
Legend
The indicator light
goes out
The indicator light
blinks slowly
The indicator light
blinks rapidly
The indicator
light is flashing
LEARN
indicator light Blind

9
Operation (cont.)
Save the
scenario
To add several individual switches, repeat the operations and for each receiver.
Add the individual switch
Transmitter Receiver(s)
LEARN
indicator light LEARN
indicator light Blind
Learning is complete: the “Up - Down - Stop” controls can be issued indiscriminately via the individual radio shutter switch
or the group radio shutter switch.

10
Operation (cont.)
Example: modification of the previous general control function by adding an individual shutter switch B.
Transmitter
Group radio shutter switch
E.g.: 7756 31
Receiver (shutter A and B)
Individual radio
shutter switch
E.g.: 7756 28
Shutter A
Shutter B