Danfoss VLT HVAC Basic Drive Programming Manual

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Danfoss VLT HVAC Basic Drive Programming Manual Manual pdf 34 page image

3.5 Main Menu - Limits/Warnings - Group 43.5.1 4-1* Motor LimitsDefine current and speed limits for the motor, and thereaction of the frequency converter when the limits areexceeded.4-10 Motor Speed DirectionOption: Function:[0] Clockwise Only operation in clockwise direction will beallowed.[2] * Both directions Operation in both clockwise and anti-clockwise direction will be allowed.NOTEThe setting in 4-10 Motor Speed Direction has impact on1-73 Flying Start.4-12 Motor Speed Low Limit [Hz]Range: Function:0.0 Hz* [0.0 - 400.0Hz]Enter the minimum limit for motor speed.The Motor Speed Low Limit can be set tocorrespond to the minimum outputfrequency of the motor shaft. The SpeedLow Limit must not exceed the setting in4-14 Motor Speed High Limit [Hz].4-14 Motor Speed High Limit [Hz]Range: Function:65.0 Hz* [0.1 - 400.0Hz]Enter the maximum limit for motor speed.4-14 Motor Speed High Limit [Hz] can be setto match the manufacturer'srecommended max. motor speed. TheMotor Speed High Limit must exceed thevalue in 4-12 Motor Speed Low Limit [Hz].NOTEMax. output frequency cannot exceed 10% of the inverterswitching frequency (14-01 Switching Frequency).NOTEMotor Speed High Limit cannot be set higher than 4-19 MaxOutput Frequency.4-18 Current LimitRange: Function:110.0%*[0.0 -300.0 %]Enter the current limit for motor andgenerator operation (in % of rated motorcurrent. If the value is higher than maximumrated output from frequency convterter,current will still be limited by the frequencyconverters maximum current). If a setting in1-00 Configuration Mode to 1-25 Motor NominalSpeed is changed, 4-18 Current Limit is notautomatically reset to the default setting.4-19 Max Output FrequencyRange: Function:65.0Hz*[0.0 -400.0 Hz]Enter the max. output frequencyvalue.4-19 Max Output Frequency specifies theabsolute limit on the frequency converteroutput frequency for improved safety inapplications where accidental over-speedingmust be avoided. This absolute limit appliesto all configurations and is independent ofthe setting in 1-00 Configuration Mode.3.5.2 4-5* Adj. WarningsDefine adjustable warning limits for current. Warnings areshown on the display, programmed output or serial bus.4-50 Warning Current LowRange: Function:0.00 A* [0.00 -194.00 A]Enter the I-low value. When the motorcurrent falls below this limit, a bit in thedrives statusword will be set. This value canalso be programmed to produce a signal onthe digital output or the relay output.4-51 Warning Current HighRange: Function:194.00 A* [0.00 -194.00 A]Enter the I-high value. When the motorcurrent exceeds this limit, a bit in thedrives statusword will be set. This valuecan also be programmed to produce asignal on the digital output or the relayoutput.4-58 Missing Motor Phase FunctionOption: Function:Select On, to display an alarm in the event of a missingmotor phase. Select Off, for no missing motor phasealarm. However the On setting is strongly recommendedto avoid motor damage.[0] Off No alarm is displayed if a missing motor phase occurs.[1] * On An alarm is displayed is a missing motor phase occurs.Parameters VLT HVAC Basic Drive Programming GuideMG.18.B1.02 - VLT® is a registered Danfoss trademark 333 3