4-2 Function Mode •If overload limit parameter b023/b026 is set too short, an overvoltage trip may occur because of regenerative energy from the motor caused by automatic deceleration of this function even during acceleration. •Make the following adjustments if this function operates before the frequency reaches the target value during acceleration. Increase the acceleration time. (Refer to "Acceleration/Deceleration Time" (page 4-8).) Increase the torque boost. (Refer to "Torque Boost" (page 4-19).) Increase the overload limit level (b022/b025). Overload limit level b022/b025 Decelerates according to the set overload limit parameter. Output current 4 Max.
frequency A004/A204/A304 Target frequency F001 Functions Inverter output frequency b023/b026 „ Overload Warning •If the applied load is large, the Inverter can output an overload warning signal before an overload trip occurs. This helps prevent mechanical damage due to an overload in the carrier machine, or an operation line stop due to overload protection of the Inverter. •Allocate "03" (OL) or "26" (OL2) to any of multi-function output terminals P1 to P5 (C021 to C025) or the relay output terminal (C026).
(Two types of overload warning signals are available for output.) Overload limit level b022/b025 Overload warning level C041/C111 Output current OL/OL2 output Overcurrent Suppression Function •This function suppresses overcurrent caused by a steep current rise in rapid acceleration. •You can set whether to enable or disable this function with b027. Note: If you use the Inverter with an elevating machine, disable this function. Otherwise, the machine may slide down. 4-50 Parameter No. Function name Data Default setting Unit b027 Overcurrent suppression function 00: Disabled 01: Enabled 01