Danfoss VLT FCD 303 Operating Instructions Manual

Also see for VLT FCD 303: Design guide

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Danfoss VLT FCD 303 Operating Instructions Manual Manual pdf 49 page image

VLT ® FCD SeriesProgramming, FCD300■ References & Limits200 Output frequency range(OUT FREQ. RNG/ROT)Value:✭Only clockwise, 0 - 132 Hz(132 HZ CLOCKWISE) [0]Both directions, 0 - 132 Hz(132 HZ BOTH DIRECT) [1]Anti-clockwise only, 0 - 132 Hz(132 HZ COUNTER CLOCK) [2]Clockwise only, 0 - 1000 Hz(1000 HZ CLOCK WISE) [3]Both directions, 0 - 1000 Hz(1000 HZ BOTH DIRECT) [4]Anti-clockwise only, 0 - 1000 Hz(1000 HZ COUNTER CLOCK) [5]Function:This parameter guarantees protection againstunwanted reversing. Furthermore, the maximumoutput frequency can be selected that is to applyregardless of the settings of other parameters. Thisparameter has no function if Process regulation, closedloop has been selected in parameter 100 Configuration.Description of choice:Select the required direction of rotation as well asthe maximum output frequency. Please note that ifClockwise only [0]/[3] or Anti-clockwise only [2]/[5] isselected, the output frequency will be limited to therange f MIN -f MAX . If Both directions [1]/[4] is selected,the output frequency will be limited to the range ± fMAX (the minimum frequency is of no significance).201 Output frequency low limit, f MIN(MIN OUTPUT FREQ)Value:0.0 - f MAX ✭ 0.0 HzFunction:In this parameter, a minimum motor frequency limit canbe selected that corresponds to the minimum speedat which the motor is allowed to run. If Both directionshas been selected in parameter 200 Output frequencyrange, the minimum frequency is of no significance.Description of choice:The value chosen can range from 0.0 Hz tothe frequency set in parameter 202 Outputfrequency high limit, f MAX.202 Output frequency high limit, f MAX(MAX. OUTPUT FREQ)Value:f MIN - 132/1000 Hz (par. 200 Output frequency range)✭ 132 HzFunction:In this parameter, a maximum output frequency limitcan be selected that corresponds to the highestspeed at which the motor is allowed to run.NB!:The output frequency of the frequencyconverter can never assume a value higherthan 1/10 of the switching frequency(parameter 411 Switching frequency).Description of choice:A value can be selected from fMIN to the value chosenin parameter 200 Output frequency range.■ Handling of referencesHandling of references is described in the block diagrambelow. The block diagram shows how a change inone parameter can affect the resulting reference.Parameters 203 to 205 Reference and parameter214 Reference function define how the handlingof references can be performed. The parametersmentioned can be active in both closed and open loop.Remote controlled references are defined as:- External references, such as analogue inputs 53and 60, pulse references via terminal 33 andreferences from serial communication.✭ = factory setting. () = display text [] = value for use in communication via serial communication portMG.04.B7.02 - VLT is a registered Danfoss trademark 49