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FTS system installation guide
The dynamic tension prevents the fabric and straps from unwinding too quickly due to the weight of the
•
load bar. In a conventional set-up (horizontal or very slightly sloping system), it is identical in both operating
directions (symmetrical tension), which corresponds to the factory configuration of the dip switches (
XII
):
The final tension is set automatically by the control box, after every end limit stop or after a STOP request.
The final tension needs to be adjusted on the potentiometer (XIV), graduated from 0 to 9.
Push button (
XI
) simultaneously activates the supply to the brakes on both actuators.
This operation eases the system tension, for example in order to adjust its parallel alignment.
N.B.: holding push button (
XI
) down too long (>1 minute) could damage the actuator brakes.
The dynamic tension then needs to be adjusted using the potentiometer
•
(
XIII
), graduated from 0 to 9.
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.
Request fabric feed-out, followed by a "stop" order: the system will stop, and then tension the fabric slightly. Perform various
•
tests, gradually increasing the potentiometer value (
XIV
), until you obtain a correct tension.
N.B.: too high a final tension may weaken the structure!
Request fabric retraction: if the straps unwind too quickly (sag) or too slowly (high tension), readjust the
•
potentiometer value (
XIII
).
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High stress on the structure!
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14. Adjusting the dynamic tension
15. Adjusting the final tension
16. Simultaneous brake release
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In certain cases, such as a steep inclination, it is possible to alter the position
•
of the dip switches (
XII
), to obtain a low or dissymmetrical dynamic tension.
These set-ups should be validated with Somfy's technical service.
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Summary of Contents for FTS Hi-Pro Series
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