VLT ® 2900 Series References & Limits 0.0 - f MAX 0.0 Hz Only clockwise, 0 - 132 Hz (132 Hz CLOCKWISE) [0] In this parameter, a minimum motor frequency limit can be selected that corresponds to the minimum speed at which the motor is allowed to run. If Both di- rections has been selected in parameter 200 Output frequency range , the minimum frequency is of no sig- nificance.
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] The value chosen can range from 0.0 Hz to the fre- quency set in parameter 202 Output frequency high limit, f MAX . Anti-clockwise only, 0 - 1000 Hz (1000 Hz COUNTER CLOCK) [5] This parameter guarantees protection against unwan- ted reversing. Furthermore, the maximum output fre- quency can be selected that is to apply regardless of the settings of other parameters.
This parameter has no function if Process regulation, closed loop has been selected in parameter 100 Configuration . f MIN - 132/1000 Hz (par. 200 Output fre- quency range ) 132 Hz Programming In this parameter, a maximum output frequency limit can be selected that corresponds to the highest speed at which the motor is allowed to run. Select the required direction of rotation as well as the maximum 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 range f MIN -f MAX .
If Both directions [1]/[4] is selected, the out- put frequency will be limited to the range ± f MAX (the minimum frequency is of no significance). NB! The output frequency of the frequency converter can never assume a value high- er than 1/10 of the switching frequency (parameter 411 Switching frequency ). A value can be selected from f MIN to the value chosen in parameter 200 Output frequency range . = factory setting, () = display text, [] = value for use in communication via serial communication port MG.29.A3.02 - VLT ® is a registered Danfoss trademark 29 201 Output frequency low limit, fMIN (MIN OUTPUT FREQ) Value: 200 Output frequency range (OUT FREQ. RNG/ROT) Value: Function:
Description of choice: Function: 202 Output frequency high limit, fMAX (max. output freq) Value: Function: Description of choice: Description of choice: