6 -172 Control-related AdjustmentsThe Varispeed F7 is designed to provide sufficient performance for elevating machines. However, if problemsrelated to controllability should occur, such as vibration or slipping, adjust the following constants in accor-dance with the control method. Only constants that frequently require adjustment are listed in this table.Table 6.4 Control-related AdjustmentsControlMethodCon-stantNumberName Performance FactorySettingRecom-mendedSettingAdjustment MethodOpen-loopvector con-trol(A1-02 = 2)N2-01Speed feed-back detec-tion control(AFR) gain• Increasing torque andspeed response• Controlling huntingand vibration in mid-dle-range speeds (10to 40 Hz)1.00 0.50 to 2.00• Torque or speed responseis insufficient: Reduce thesetting• Hunting or vibrationoccurs: Increase the set-tingC4-02Torque com-pensationprimarydelay timeconstant• Increasing torque andspeed response• Controlling huntingand vibration20 ms 20 to 100 ms• Torque or speed responseis insufficient: Reduce thesetting• Hunting or vibrationoccurs: Increase the set-tingC3-02Slip compen-sation pri-mary delaytime• Increasing speedresponse• Improving speed sta-bility200 ms 100 to500 ms• Speed response is slow:Reduce the setting• Speed is not stable:Increase the settingC3-01 Slip compen-sation gain• Improving speedaccuracy 1.0 0.5 to 1.5• Speed is slow: Increasethe setting• Speed is too fast: Reducethe settingC6-02Carrier fre-quencyselection• Reducing motor mag-netic noise• Controlling huntingand vibration at lowspeeds (10 Hz orlower)*1 1 to F• Motor magnetic noise ishigh: Increase the setting• Hunting or vibrationoccurs at low speeds:Reduce the settingE1-08Mid. outputfrequencyvoltage (VC) • Improving torque andspeed response at lowspeeds• Controlling shock atstartup11.0 V*2 12.0 to13.0 V*2• Torque or speed responseis insufficient: Increasethe setting• Shock at startup is large:Reduce the settingE1-10Min. outputfrequencyvoltage(VMIN)
