YASKAWA F7 User Manual

Also see for Varispeed f7: Connection manual Programming manual User guide Instruction manual User manual

Contents

Parameters A - 35High Slip Brakingn3-01High Slip BrakingDeceleration FrequencyWidthHSB Decel WidthSets how aggressively the Drive decreases the output frequency asit stops the motor using high slip braking (HSB). If Overvoltage(OV) faults occur during HSB, this parameter may need to beincreased.1 to 20 5% A A - -n3-02High Slip BrakingCurrent LimitHSB Current RefSets the maximum current to be drawn during an HSB stop. Highern3-02 settings will shorten motor stopping times but causeincreased motor current, and therefore increased motor heating.100 to200 150% A A - -n3-03High Slip Braking DwellTime at StopHSB DwelTim@ StpSets the amount of time the Drive will dwell at E1-09 (MinimumFrequency) at the end of deceleration. If this time is set too low, themachine inertia can cause the motor to rotate slightly after the HSBstop is complete and the Drive output is shut off.0.0 to10.0 1.0sec A A - -n3-04High Slip BrakingOverload TimeHSB OL TimeSets the time required for an HSB overload fault (OL7) to occurwhen the Drive output frequency does not change for some reasonduring an HSB stop. Normally this does not need to be adjusted.30 to1200 40sec A A - -Monitor Selecto1-01User Monitor SelectionUser Monitor SelSelects which monitor will be displayed in the operation menu uponpower-up when o1-02 = 4. 4 to 45 6 A A A Ao1-02User Monitor Selection AfterPower-UpPower-On MonitorSelects which monitor will be displayed uponpower-up.1: Frequency Reference (U1-01)2: Output Frequency (U1-02)3: Output Current (U1-03)4: User Monitor (set by o1-01)1 to 4 1 A A A Ao1-03Digital Operator DisplaySelectionDisplay Scaling0 to39999 0 A A A Ao1-04Setting unit for frequencyparameters related to V/FcharacteristicsDisplay UnitsSets the setting units related to V/F pattern frequency relatedparameters (E1-04, -06, -09, -11)0: Hertz1: RPM0 to 1 0 - - - Ao1-05LCD BrightnessAdjustmentLCD ContrastSets the contrast of the Digital Operator LCD. A setting of “1” is thelightest contrast and a setting of “5” is the darkest contrast. 0 to 5 3 A A A ADenotes that parameter can be changed when the Drive is running.Table A.1 F7 Parameter List (Continued)ParameterNo.Parameter NameDigital Operator Display Description SettingRangeFactorySettingControl MethodV/F V/Fw/PGOpenLoopVectorFluxVectorSets the units of the Frequency References (d1-01 tod1-17), the Frequency Reference Monitors (U1-01,U1-02, U1-05), and the Modbus communicationfrequency reference.0: Hz1: % (100% = E1-04)2 to 39: RPM (Enter the number of motor poles).40 to 39999: User display.Set the number desired at maximumoutput frequency.4 digit numberNumber of digits from the right of thedecimal pointExample 1: o1-03 = 12000, will result in frequencyreference from 0.0 to 200.0 (200.0 = Fmax).Example 2: o1-03 = 21234, will result in frequencyreference from 0.00 to 12.34 (12.34 = Fmax).