VLT ® 2900 Series Coasting (COAST) [0] 0 - 60 sec. 10 sec DC hold (DC HOLD) [1] In this parameter, the DC brake time is set at which parameter 132 DC brake voltage is to be active. This is where to choose the function of the frequency converter after the output frequency has become lower than the value in parameter 123 The min. frequency for activation of function at stop or after a stop command and when the output frequency has been ramped down to 0 Hz. Set the required time. Select Coasting [0] if the frequency converter is to 'let go' of the motor (inverter turned off). 0.0 (OFF) - par.
202 Output frequency high limit, f MAX OFF Select DC hold [1] if parameter 137 DC hold voltage is to be activated. In this parameter, the DC brake cut-in frequency is set at which the DC brake is to be activated in connection with a stop command. Set the required frequency. 0,1 - 10 Hz 0,1 Hz In this parameter, the output frequency is set at which the function selected in parameter 122 Function at stop is to be activated. No protection (NO PROTECTION) [0] Thermistor warning (THERMISTOR WARN) [1] Set the required output frequency. Thermistor trip (THERMISTOR TRIP) [2] ETR warning 1 (ETR WARNING 1) [3] NB!
If parameter 123 is set higher than param- eter 130, then the start delay function (pa- rameter 120 and 121) will be skipped. ETR trip 1 (ETR TRIP 1) [4] ETR warning 2 (ETR WARNING 2) [5] ETR trip 2 (ETR TRIP 2) [6] ETR warning 3 (ETR WARNING 3) [7] NB! If parameter 123 is set too high, and DC hold has been chosen in parameter 122, the output frequency will jump to the value in parameter 123 without ramping up. This may cause an overcurrent warning / alarm. ETR trip 3 (ETR TRIP 3) [8] ETR warning 4 (ETR WARNING 4) [9] ETR trip 4 (ETR TRIP 4) [10] The frequency converter can monitor the motor tem- perature in two different ways:
= factory setting, () = display text, [] = value for use in communication via serial communication port 24 MG.29.A3.02 - VLT ® is a registered Danfoss trademark 122 Function at stop (FUNCTION AT STOP) Value: 126 DC brake time (DC BRAKING TIME) Value: Function: Function: Description of choice: 127 DC brake cut-in frequency (DC BRAKE CUT-IN) Value: Description of choice: Function: 123 Min. frequency for activation of func- tion at stop (MIN.F.FUNC.STOP) Value: Description of choice: Function: 128 Thermal motor protection (MOT.THERM PROTEC) Value: Description of choice: Function: