Danfoss VLT AQUA Drive FC 202 Design Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

Contents

6.1.3 Potentiometer ReferenceVoltage reference via a potentiometer.3-15 Reference 1 Source [1] = Analog Input 536-10 Terminal 53 Low Voltage = 0 V6-11 Terminal 53 High Voltage = 10 V6-14 Terminal 53 Low Ref./Feedb. Value = 0 RPM6-15 Terminal 53 High Ref./Feedb. Value = 1.500RPMSwitch S201 = OFF (U)130BA287.10555039 42 53 54Speed RPMP 6-151 kW+10V/30mARef. voltageP 6-11 10VIllustration 6.3 Potentiometer Reference6.1.4 Automatic Motor Adaptation (AMA)AMA is an algorithm to measure the electrical motorparameters on a motor at standstill, meaning that AMAitself does not supply any torque.AMA is useful when commissioning systems andoptimising the adjustment of the frequency converter tothe applied motor. This feature is used where the defaultsetting does not apply to the connected motor.1-29 Automatic Motor Adaptation (AMA) allows a choice ofcomplete AMA with determination of all electrical motorparameters or reduced AMA with determination of thestator resistance Rs only.The duration of a total AMA varies from a few minutes onsmall motors to more than 15 minutes on large motors.Limitations and preconditions:• For the AMA to determine the motor parametersoptimally, enter the correct motor nameplatedata in 1-20 Motor Power [kW] to 1-28 MotorRotation Check.• For the best adjustment of the frequencyconverter, carry out AMA on a cold motor.Repeated AMA runs could lead to a heating ofthe motor, which results in an increase of thestator resistance, Rs. Normally, this increase is notcritical.• AMA can only be carried out if the rated motorcurrent is minimum 35% of the rated outputcurrent of the frequency converter. AMA can becarried out on up to one oversize motor.• It is possible to carry out a reduced AMA testwith a Sine-wave filter installed. Avoid carryingout a complete AMA with a Sine-wave filter. If anoverall setting is required, remove the Sine-wavefilter while running a total AMA. After completionof the AMA, reinsert the Sine-wave filter.• If motors are coupled in parallel, use onlyreduced AMA if any.• Avoid running a complete AMA when usingsynchronous motors. If synchronous motors areapplied, run a reduced AMA and manually set theextended motor data. The AMA function does notapply to permanent magnet motors.• The frequency converter does not produce motortorque during an AMA. During an AMA, it isimperative that the application does not force themotor shaft to run, which is known to happenwith wind milling in ventilation systems, forexample. This disturbs the AMA function.• AMA cannot be activated when running a PMmotor (when 1-10 Motor Construction is set to [1]PM non-salient SPM).6.1.5 Smart Logic ControlThe Smart Logic Control (SLC) is essentially a sequence ofuser-defined actions (see 13-52 SL Controller Action)executed by the SLC when the associated user-definedevent (see 13-51 SL Controller Event) is evaluated as TRUEby the SLC.Events and actions are each numbered and are linked inpairs called states, which means that when event [1] isfulfilled (attains the value TRUE), action [1] is executed.After this sequence, the conditions of event [2] will beevaluated and if evaluated TRUE, action [2]will be executed,and so on. Events and actions are placed in arrayparameters.Only one event is evaluated at any time. If an event isevaluated as FALSE, nothing happens (in the SLC) duringthe present scan interval and no other events areevaluated, so that when the SLC starts, it evaluates event[1] (and only event [1]) each scan interval. Only when event[1] is evaluated TRUE, the SLC executes action [1] and startsevaluating event [2].It is possible to program from 0 to 20 events and actions.When the last event/action has been executed, theApplication Examples VLT® AQUA Drive FC 202 Design GuideMG20Z102 - VLT® is a registered Danfoss trademark 1576 6