VLT ® 2900 Series frequency converter to reset and the motor will ramp up to the preset reference. This parameter is used for setting the signal value that is to correspond to the minimum reference or the min- imum feedback, parameter 204 Minimum reference, Ref MIN / 414 Minimum feedback, FB MIN . Pulse counter start is used to start a counter stop se- quence with a pulse signal. The pulse width must at least be 14 ms and not longer than the count period. See also parameter 343 and the instruction, MI28CXYY. Set the required voltage value. For reasons of accu- racy, compensation should be made for voltage loss in long signal cables.
If the Time out function is to be used (parameter 317 Time out and 318 Function after time out ), the value set must be higher than 1 Volt. No function (NO OPERATION) [0] Reference (reference) [1] Feedback (feedback) [2] Wobble (WOBB.DELTA FREQ [%]) [10] In this parameter it is possible to select the function required to be connected to terminal 53. Scaling of the input signal is made in parameter 309 Terminal 53, min. scaling and parameter 310 Terminal 53, max. scaling .
0 - 10.0 Volt 10.0 Volt This parameter is used for setting the signal value that is to correspond to the maximum reference value or maximum feedback, parameter 205 Maximum refer- ence, Ref MAX / 414 Maximum feedback, FB MAX . Programming No function [0]. Is selected if the frequency converter is not to react to signals connected to the terminal. Reference [1]. If this function is selected, the reference can be changed by means of an analogue reference signal. If reference signals are connected to more than one input, these reference signals must be added up.If a voltage feedback signal is connected, select Feed- back [2] on terminal 53.
Wobble [10] The delta frequency can be controlled by the analog input. If WOBB.DELTA FREQ is selected as analog in- put (par. 308 or par. 314) the value selected in par. 702 equals 100 % analog input. Example: Analog input = 4-20 mA, Delta freq. par. 702 = 5 Hz • 4 mA = 0 Hz and 20 mA = 5 Hz. If this function is chosen, see Wobble Instruction MI28JXYY for fur- ther information. Set the required voltage value. For reasons of accu- racy, compensation should be made for voltage losses in long signal cables.
No function (no operation) [0] Reference (reference) [1] Feedback (feedback) [2] Wobble (WOBB.DELTA FREQ [%]) [10] This parameter allows a choice between the different functions available for the input, terminal 60. Scaling of the input signal is effected in parameter 315 Terminal 60, min. scaling and parameter 316 Terminal 60, max. scaling . 0.0 - 10.0 Volt 0.0 Volt No function [0]. Is selected if the frequency converter is not to react to signals connected to the terminal. Reference [1].
If this function is selected, the reference can be changed by means of an analogue reference = factory setting, () = display text, [] = value for use in communication via serial communication port MG.29.A3.02 - VLT ® is a registered Danfoss trademark 39 Function: Description of choice: 308 Terminal 53, analogue input voltage (AI [V]53FUNCT.) Value: 310 Terminal 53 Max. scaling (AI 53 SCALE HIGH) Value: Function: Function: Description of choice: Description of choice: 314 Terminal 60, analogue input current (AI [mA] 60 FUNCT) Value: Function: 309 Terminal 53 Min. scaling (AI 53 SCALE LOW) Value: Description of choice: