4-2 Function Mode * To switch to the 2nd/3rd control, allocate 08 (SET)/17 (SET3) to the desired multi-function input and then turn it on. 4 „ Manual Torque Boost •Outputs the voltage set in A042/A242/A342 or A043/A243/A343. •In A042/A242/A342, set a ratio based on the voltage set in the motor voltage selection as 100%. Functions Output voltage (%) 100 A042/A242/A342 A043/A243/A343 Base frequency (100%) Output frequency •If you raise the set value of the manual torque boost, be careful about motor overexcitation. Otherwise, the motor may burn out. •In manual torque boost frequency A043/A243/A343, set a ratio based on the base frequency as 100%.
„ Automatic Torque Boost •If the automatic torque boost is selected in the torque boost selection (A041/A241: 01), it operates to adjust the output frequency and voltage automatically, depending on the load level. (In actual control, the automatic torque boost is used along with the manual torque boost.) •To select the automatic torque boost, set motor capacity selection H003/H203 and motor pole number selection H004/H204 correctly according to your motor. •To avoid a possible overcurrent trip during deceleration, set the AVR selection to "Always ON" (A081: 00). 4-20 Parameter No. Function name Data Default setting Unit A046 Automatic torque boost voltage compensation gain 0. to 255. 100.
% A246 2nd automatic torque boost voltage compensation gain A047 Automatic torque boost slip compensation gain 0. to 255. 100. % A247 2nd automatic torque boost slip compensation gain