Danfoss VLT 5000 Series Operating Instructions Manual

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Danfoss VLT 5000 Series Operating Instructions Manual Manual pdf 104 page image

VLT ® 5000 SeriesProgramming■ Parameters - Load and motor100 Configuration(CONFIG. MODE)Value:✭Speed control, open loop(SPEED OPEN LOOP) [0]Speed control, closed loop(SPEED CLOSED LOOP) [1]Process control, closed loop(PROCESS CLOSED LOOP) [3]Torque control, open loop(TORQUE OPEN LOOP) [4]Torque control, speed feedback(TORQUE CONTROL SPEED) [5]Function:This parameter is used for selecting the configurationto which the frequency converter is to be adapted.This makes adaptation to a given application simple,because the parameters that are not used in the givenconfiguration are covered up (not active). By changingbetween the different application configurations,bumpless transfer (frequency only) is ensured.Description of choice:If Speed control, open loop [0] is selected, a normalspeed control (without feedback signal) is obtained,but with automatic slip compensation, ensuring anearly constant speed at varying loads.Compensations are active, but may be disabledas required in parameter group 100.If Speed control, closed loop [1] is selected, a fullholding torque is obtained at 0 rpm, in addition toincreased speed accuracy. A feedback signal mustbe provided and the PID regulator must be set. (Seealso connection examples in the Design Guide).If Process control, closed loop [3] is selected, theinternal process regulator will be activated, therebyenabling accurate control of a process with respectto a given process signal. The process signal can beset using the actual process unit or as a percentage.A feedback signal must be supplied from the process,and the process setpoint must be adjusted (See alsoconnection examples in the Design Guide).If Torque control, open loop [4] is selected, thespeed is regulated and the torque is kept constant.This is done without a feedback signal, since VLT5000 accurately calculates the torque on the basisof the current measurement (See also connectionexamples in the Design Guide).If Torque control, speed feedback [5] is selected, anencoder speed feedback signal must be connectedto the digital terminals 32/33.Parameter 205 Maximum reference and parameter415 Maximum feedback must be adapted to theapplication if [1], [3], [4] or [5] is selected.101 Torque characteristics(TORQUE CHARACT)Value:✭High-constant torque (H-CONSTANT TORQUE) [1]High-variable torque low (H-VAR.TORQ.: LOW) [2]High-variable torque medium(H-VAR.TORQ.: MEDIUM) [3]High-variable torque high(H-VAR.TORQ.: HIGH) [4]High-special motor characteristics(H-SPEC.MOTOR CHARACT) [5]High-variable torque with low starting torque(H-VT LOW W. CT-START) [6]High-variable torque with medium starting torque(H-VT MED W. CT-START) [7]High-variable torque with high starting torque(H-VT HIGH W. CT-START) [8]Normal-constant torque(N-CONSTANT TORQUE) [11]Normal-variable torque low(N-VAR.TORQ.: LOW) [12]Normal-variable torque medium(N-VAR.TORQ.: MEDIUM) [13]Normal-variable torque high(N-VAR.TORQ.: HIGH) [14]Normal-special motor characteristics(N-SPEC.MOTOR CHARACT) [15]Normal-variable torque with low constantstarting torque (N-VT LOW W. CT-START) [16]Normal-variable torque with medium constantstarting torque (N-VT MED W. CT-START) [17]Normal-variable torque with high constantstarting torque (N-VT HIGH W. CT-START) [18]Function:In this parameter, the principle for adjusting the U/fcharacteristics of the frequency converter to thetorque characteristics of the load is selected. Bychanging between the different torque characteristics,bumpless transfer (voltage only) is ensured.✭ = factory setting. () = display text [] = value for use in communication via serial communication portMG.51.A9.02 - VLT is a registered Danfoss trademark 103