Danfoss VLT Decentral Drive FCD 302 Design Manual

Also see for vlt fcd 302: Installation guide Operating guide Operating instructions Programming guide Operating guide

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Danfoss VLT Decentral Drive FCD 302 Design Manual Manual pdf 10 page image

1.3.5 MiscellaneousAnalog inputsThe analog inputs are used for controlling variousfunctions of the frequency converter.There are 2 types of analog inputs:Current input, 0–20 mA, and 4–20 mAVoltage input, -10 V DC to +10 V DC.Analog outputsThe analog outputs can supply a signal of 0–20 mA, 4–20 mA.Automatic motor adaptation, AMAAMA algorithm determines the electrical parameters forthe connected motor at standstill.Brake resistorThe brake resistor is a module capable of absorbing thebrake power generated in regenerative braking. Thisregenerative brake power increases the DC-link voltageand a brake chopper ensures that the power is transmittedto the brake resistor.CT characteristicsConstant torque characteristics used for all applicationssuch as conveyor belts, displacement pumps, and cranes.Digital inputsThe digital inputs can be used for controlling variousfunctions of the frequency converter.Digital outputsThe frequency converter features 2 solid-state outputs thatcan supply a 24 V DC (maximum 40 mA) signal.DSPDigital signal processor.ETRElectronic thermal relay is a thermal load calculation basedon present load and time. Its purpose is to estimate themotor temperature.Hiperface®Hiperface® is a registered trademark by Stegmann.InitializingIf initializing is carried out (parameter 14-22 OperationMode), the frequency converter returns to the defaultsetting.Intermittent duty cycleAn intermittent duty rating refers to a sequence of dutycycles. Each cycle consists of an on-load and an off-loadperiod. The operation can be either periodic duty or non-periodic duty.LCPThe local control panel makes up a complete interface forcontrol and programming of the frequency converter. Thecontrol panel is detachable and can be installed up to 3 m(10 ft) from the frequency converter, that is, in a frontpanel with the installation kit option.lsbLeast significant bit.msbMost significant bit.MCMShort for mille circular mil, an American measuring unit forcable cross-section. 1 MCM=0.5067 mm2.Online/offline parametersChanges to online parameters are activated immediatelyafter the data value is changed. Press [OK] to activatechanges to off-line parameters.Process PIDThe PID control maintains the required speed, pressure,temperature, and so on, by adjusting the output frequencyto match the varying load.PCDProcess control data.Power cycleSwitch off the mains until display (LCP) is dark, then turnpower on again.Pulse input/incremental encoderAn external, digital pulse transmitter used for feeding backinformation on motor speed. The encoder is used inapplications where great accuracy in speed control isrequired.RCDResidual current device.Set-upSave parameter settings in 4 set-ups. Change between the4 parameter set-ups and edit 1 set-up, while another set-up is active.SFAVMSwitching pattern called stator flux-oriented asynchronousvector modulation (parameter 14-00 Switching Pattern).Slip compensationThe frequency converter compensates for the motor slip bygiving the frequency a supplement that follows themeasured motor load keeping the motor speed almostconstant.SLCThe SLC (smart logic control) is a sequence of user-definedactions executed when the associated user-defined eventsare evaluated as true by the SLC. (See chapter 4.9.1 SmartLogic Controller).STWStatus word.FC standard busIncludes RS485 bus with FC protocol or MC protocol. Seeparameter 8-30 Protocol.THDTotal harmonic distortion states the total contribution ofharmonic.Introduction VLT® Decentral Drive FCD 3028 Danfoss A/S © 05/2018 All rights reserved. MG04H30211