table stored in a processor memory in order to stop operation of the motor once the required value is received should the values be exceeded the motor may be shut down to avoid damaging the system by way of example and not of limitation the inventive tensioner and system operates in a belt tension range of approximately 300n to 700n this corresponds to a spring attachment member 106 angular rotation a see fig9 of approximately 40 u00b0 based upon a tensioner arm length of 75 mm and a pulley diameter of 76 mm these values are presented as examples and not by way of limitation by moving member 106 the gearbox u2018 winds u2019 or u2018 unwinds u2019 the spring 109 thereby increasing or decreasing a spring force exerted on the tensioner arm and the belt more particularly the 300 n position is a function of the spring rate and corresponds approximately to the u03b1 0 u00b0 position the 700n position corresponds approximately to the u03b1 40 u00b0 position the spring rate may be adjusted up or down to vary the angular rotation u03b1 needed for member 106 as well in operation the tensioner provides a belt tension as well as damping the tensioner has a damping coefficient as required by the.