Danfoss VLT 2800 Manual

Also see for VLT 2800: Operating instructions Manual Instruction manual Quick guide Design guide

Contents

Danfoss VLT 2800 Manual Manual pdf 77 page image

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 against unwan-ted reversing. Furthermore, the maximum output fre-quency can be selected that is to apply regardless ofthe settings of other parameters. This parameter hasno function if Process regulation, closed loop has beenselected in parameter 100 Configuration.Description of choice:Select the required direction of rotation as well as themaximum output frequency. Please note that if Clock-wise only [0]/[3] or Anti-clockwise only [2]/[5] is selec-ted, the output frequency will be limited to the rangefMIN-f MAX. If Both directions [1]/[4] is selected, the out-put frequency will be limited to the range ± f MAX (theminimum 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 limitcan be selected that corresponds to the minimumspeed at which the motor is allowed to run. If Both di-rections has been selected in parameter 200 Outputfrequency range, the minimum frequency is of no sig-nificance.Description of choice:The value chosen can range from 0.0 Hz to the fre-quency set in parameter 202 Output frequency highlimit, fMAX .202 Output frequency high limit, fMAX(max. output freq)Value:fMIN - 132/1000 Hz (par. 200 Output fre-quency range) 132 HzFunction:In this parameter, a maximum output frequency limitcan be selected that corresponds to the highest speedat which the motor is allowed to run.NB!The output frequency of the frequencyconverter can never assume a value high-er than 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 dia-gram below. The block diagram shows how a changein one parameter can affect the resulting reference.Parameters 203 to 205 Reference and parameter214 Reference function define how the handling of ref-erences can be performed. The parameters men-tioned can be active in both closed and open loop.= factory setting, () = display text, [] = value for use in communication via serial communication portMG.27.E2.02 - VLT is a registered Danfoss trademark 77Programming