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To achieve an optimum setting, first set the potentiometer (
XIII)
to 0, then adjust the potentiometer gradually until the
fabric is slightly tensioned when being rolled up and unrolled (too much dynamic tension will inhibit the operation of the
system).
N.B.: the tension of the fabric will vary when the actuators are hot (the "thermal time" of the FTS actuators is on average 8
minutes for FTS LT50 actuators and 7 minutes for FTS LT60 actuators).
Note:
this setting must be made after having selected the symmetric/asymmetric tension that corresponds to the installation
and once the actuator end stops have been set (see previous page).
Setting the dynamic tension of the fabric (braking effect during unrolling)
FTS system operating principle
Request fabric feed-out: during unwinding, the fabric actuator brakes the
•
fabric very gently.
If the fabric unwinds too quickly, it will sag:
Using a flat-blade screwdriver, gradually increase the potentiometer value
(
XIII)
to limit the sag of the fabric.
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
High stress on the structure!
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
(
XIII
)
Summary of Contents for FTS Hi-Pro Series
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