Operating Instruction - Frequency Inverter 230V / 400V ... - opis.cz

Setting the ramp time to 0 ms deactivates the function S curve and enables the use ofthe linear ramps. The data set change-over of the parameters within an accelerationphase of the drive demands the defined take-over of the values. The controller calculatesthe values required in order to reach the reference value from the ratio of theacceleration to the ramp time and uses it until the acceleration phase is finished. Withthis method, exceeding the reference values is avoided and a data set change-overbetween extremely deviating values becomes possible.ParameterSettingsNo. Description Min. Max. Fact. sett.430 Ramp Rise Time Clockwise 0 ms 65000 ms 0 ms431 Ramp Fall Time Clockwise 0 ms 65000 ms 0 ms432 Ramp Rise Time Anticlockwise 0 ms 65000 ms 0 ms433 Ramp Rise Time Anticlockwise 0 ms 65000 ms 0 msRamp Fall Time Clockwise 431Ramp Rise Time Clockwise 430+f maxRotary fieldclockwiseFrequency reference value = 0.00 Hzt au frRotary fieldt au fanticlockwise-f ma xtRamp Rise Time Anticlockwise 432Ramp Rise Time Anticlockwise 433Example:Calculation of the acceleration time in clockwise rotation at an accelerationfrom 20 Hz to 50 Hz (fmax) and an acceleration ramp of 2 Hz/s forparameter Acceleration (Clockwise) 420. The parameter Ramp RiseTime Clockwise 430 is set to 100 ms.t =aufrΔfar50 Hz − 20 Hzt aufr== 15 s2 Hz/sttaufauf= taufr+ tVr= 15 s + 100 ms = 15.1st aufr∆fa rt Vrt auf=====acceleration timeclockwise rotary fieldchange of frequencyacceleration rampAccelerationClockwiseRamp Rise Time Clockwiseacceleration time +ramp rise time110 02/06