VLT ® 2900 Series The ratio between the up time versus the down time of the wobble sequence is specified in this parameter. Wobble ratio = t up /t down Enter the minimum allowed wobble ratio. NB! Any change in settings of reference of pa- rameters 702-709 during running will only take effect at the start of a new sequence (elapse of t wobble , parameter 705). If the ratio 0.1 is selected: t down is 10 times greater than t up If the ratio 10 is selected: t up is 10 times greater than t down FIXED (FIX) [0] RANDOM (RANDOM) [1] This parameter enables a randomized wobble ratio function. The wobble ratio in parameter 706 is not ac- tive if the random function is enabled.
Select FIX [0] to disable the random function and use the wobble ratio set in parameter 706. 0.1 - 10 10.0 This parameter determines the maximum wobble ratio which the random function is allowed to choose. Enter the maximum allowed wobble ratio. 0.1 - 10 This parameter determines the minimum wobble ratio which the random function is allowed to choose. 0.1 = factory setting, () = display text, [] = value for use in communication via serial communication port 56 MG.29.A3.02 - VLT ® is a registered Danfoss trademark Function: Description of choice: Description of choice: 707 Random function (RANDOM FUNC) Value: Function: Description of choice: 708 Random ratio max (RANDOM MAX) Value: Function:
Description of choice: 709 Random ratio min (RANDOM MIN) Value: Function: