VLT ® 2900 Series signal. If reference signals are connected to more than one input, these reference signals must be added up. If one current feedback signal is connected, select Feedback [2] on terminal 60. 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. 1 - 99 sec. 10 sec.
If the signal value of the reference or feedback signal connected to one of the input terminals 53 or 60 falls below 50 % of the minimum scaling for a period longer than the time set, the function selected in parameter 318 Function after time out will be activated. This func- tion is only active if in parameter 309 Terminal 53, min. scaling a value higher than 1 Volt has been selected, or if in parameter 315 Terminal 60, min. scaling a value higher than 2 mA has been selected. Set the required time.
0.0 - 20.0 mA In this parameter you can set the signal value that will correspond to the minimum reference or minimum feedback, parameter 204 Minimum reference, Ref MIN / 414 Minimum feedback, FB MIN . 4.0 mA No operation (NO OPERATION) [0] Freeze output frequency (FREEZE OUTPUT FREQ.) [1] Set the required current value. If the Time out function is to be used (parameter 317 Time out and 318 Func- tion after time out ) the value set must be higher than 2 mA. Stop (stop) [2] Jog (jog) [3] Max. speed (MAX SPEED) [4] Stop and trip (STOP AND TRIP) [5] This parameter allows a choice of the function to be activated after the expiry of the Time out (parameter 317 Time out ).
If a time-out function occurs at the same time as a bus time-out function (parameter 513 Bus time interval function ), the time-out function in param- eter 318 will be activated. 0.0 - 20.0 mA 20.0 mA This parameter is used for setting the signal value that is to correspond to the maximum reference value, pa- rameter 205 Maximum reference value, Ref MAX . The output frequency of the frequency converter can be: Set the required current value. - frozen at the present frequency [1] - overruled to stop [2] - overruled to jog frequency [3] - overruled to max.
output frequency [4] - overruled to stop with subsequent trip [5] = factory setting, () = display text, [] = value for use in communication via serial communication port 40 MG.29.A3.02 - VLT ® is a registered Danfoss trademark 317 Time out (LIVE ZERO TIME O) Value: Function: 315 Terminal 60 Min. scaling (AI 60 SCALE LOW) Value: Description of choice: Function: 318 Function after time out (LIVE ZERO FUNCT.) Value: Description of choice: Function: 316 Terminal 60 Max. scaling (AI 60 SCALE HIGH) Value: Function: Description of choice: Description of choice: