5． How To Adjust Parameters; Automatic Setting Mode Of High-Speed Operation Speed - Toshiba TOSVERT VF-AS1 Instruction Manual

5． How to adjust parameters
If the light-load high-speed operation is used, it is necessary to always set the motor-related parameters
(Motor constants) regardless of setting of V/f control mode selection (pt).
Refer to Section 6-22 of VF-AS1 instruction manual (E6581301) to set motor-related parameters.
In addition, for the high-speed operation fixed setting mode (f328=3, 4), the learning action allows the
light-load high-speed operation to be adjusted easily.
5.1 Automatic setting mode of high-speed
operation speed
《Adjustment method for lift application》
If the light-load high-speed operation is carried out with 60Hz of normal operation, follow the
procedure below:
① Set the parameter below at an arbitrary position of the status monitor display selection (f711 to
f718).
Light-load high-speed load torque monitor 1
② Carry out the power running operation while hanging a minimum load for which the light-load
high-speed operation is not wanted and check that the operation does not change to the light-load
high-speed operation (an operation frequency does not change).
If changing to the light-load high-speed operation, reduce the setting value of the switching load
torque during power running (f335).
③ Similarly, carry out the regenerative braking operation while hanging a minimum load for which the
light-load high-speed operation is not wanted and check that the operation does not change to the
light-load high-speed operation (an operation frequency does not change).
If changing to the light-load high-speed operation, reduce the setting value of the switching load
torque during power running (f338).
Standard setting values of the switching load torque during power running (f335) and the
switching load torque during regenerative braking (f338) are 105% of torque monitor values
checked on the light-load high-speed load torque monitor 1 when power running/regenerative
braking operation is carried out with a maximum load for which the light-load high-speed operation
can be carried out.
④ When reaching a state where it is possible to switch to the light-load high-speed operation, check
that a high-speed operation frequency changes by changing a load.
⑤ Restore the parameter changed in ① to an initial value.
Setting No.64
9
E6581327
Ex. of LED display l 20