Danfoss VLT FC 102 Programming Manual

Also see for VLT HVAC Drive FC 102: Operating instructions Service guide Programming guide Installation guide Installation guide

Contents

3.6 Parameters: 4-** Main Menu - Limits/Warnings3.6.1 4-1* Motor LimitsDefine torque, current, and speed limits for the motor, andthe reaction of the frequency converter when the limits areexceeded.A limit may generate a message in the display. A warningalways generates a message in the display or on thefieldbus. A monitoring function may initiate a warning or atrip, after which the frequency converter stops andgenerates an alarm message.4-10 Motor Speed DirectionOption: Function:NOTICEThe setting inparameter 4-10 Motor SpeedDirection has impact on theflying start inparameter 1-73 Flying Start.Selects the motor speed directionrequired.Use this parameter to preventunwanted reversing.[0] Clockwise Only operation in clockwisedirection is allowed.[2] * BothdirectionsOperation in both clockwise andcounterclockwise direction isallowed.4-11 Motor Speed Low Limit [RPM]Range: Function:Sizerelated*[ 0 - par. 4-13RPM]Enter the minimum limit for motorspeed in RPM. The motor speed lowlimit can be set to correspond tothe minimum motor speedrecommended by the manufacturer.The motor speed low limit mustnot exceed the setting inparameter 4-13 Motor Speed HighLimit [RPM].4-12 Motor Speed Low Limit [Hz]Range: Function:Sizerelated*[ 0 - par. 4-14Hz]Enter the minimum limit for motorspeed in Hz. The motor speed lowlimit can be set to correspond tothe minimum output frequency ofthe motor shaft. The speed lowlimit must not exceed the setting inparameter 4-14 Motor Speed HighLimit [Hz].4-13 Motor Speed High Limit [RPM]Range: Function:Sizerelated*[ par. 4-11 -60000 RPM]NOTICEAny changes inparameter 4-13 Motor SpeedHigh Limit [RPM] reset thevalue inparameter 4-53 Warning SpeedHigh to the value set inparameter 4-13 Motor SpeedHigh Limit [RPM].NOTICEMaximum output frequencycannot exceed 10% of theinverter switching frequency(parameter 14-01 SwitchingFrequency).Enter the maximum limit for motorspeed in RPM. The motor speedhigh limit can be set to correspondto the manufacturer’s maximumrated motor. The motor speed highlimit must exceed the setting inparameter 4-11 Motor Speed LowLimit [RPM].The parameter name appears aseither parameter 4-11 Motor SpeedLow Limit [RPM] orparameter 4-12 Motor Speed LowLimit [Hz], depending on:• The settings of otherparameters in the MainMenu.• Default settings based ongeographical location.4-14 Motor Speed High Limit [Hz]Range: Function:Sizerelated*[ par. 4-12 -par. 4-19 Hz]Enter the maximum limit for motorspeed in Hz. Parameter 4-14 MotorSpeed High Limit [Hz] can be set tocorrespond to the manufacturer'srecommended maximum motorspeed. The motor speed high limitmust exceed the value inparameter 4-12 Motor Speed LowLimit [Hz]. The output frequencymust not exceed 10% of theswitching frequency(parameter 14-01 SwitchingFrequency).Parameter Descriptions Programming GuideM0010001 Danfoss A/S © 10/2019 All rights reserved. 813 3