4-2 Function Mode Momentary Power Interruption/Trip Retry (Restart) „ Restart During Momentary Power Interruption •You can set whether the Inverter trips or retries (restarts) when a momentary power interruption or undervoltage occurs. •If the retry function is selected in retry selection b001, the Inverter retries for the number of times set in b005 (for momentary power interruption) or b009 (for undervoltage), and trips on the next time. (Under the limitless retry setting, the Inverter doesn't trip.) •You can use b004 to select whether the Inverter trips or not when a momentary power interruption or undervoltage occurs during stop.
•When selecting the retry function, set retry condition b008 according to your system. •If undervoltage is retained for 40 seconds even during retry operation, it results in E09 (undervoltage trip). 4 Functions 4-42 Parameter No. Function name Data Default setting Unit b001 Retry selection*4 *6 00: Outputs an alarm after a trip 01: Restarts from 0 Hz at retry 02: Matches the frequency at retry and starts (example 1) *3 03: Performs frequency pull-in start at retry and trips after deceleration stop *1 *3 04: Performs frequency pull-in restart at retry (example 1) *3 0.0 b002 Allowable momentary power interruption time 0.3 to 25.0:
Restarts if the momentary power interruption is within the set time (example 1) Trips if the momentary power interruption is beyond the set time (example 2) 1.0 s b003 Retry wait time 0.3 to 100. Time before restart 1.0 s b004 Momentary power interruption/ undervoltage trip during stop selection *2 *4 00: Disabled 01: Enabled 02: Disabled during stop, and during deceleration stop when the RUN command is turned off 0.0 b005 Momentary power interruption retry time selection 00: Restarts 16 times during momentary power interruption 01:
Restarts limitlessly during momentary power interruption 0.0 b007 Frequency matching lower limit frequency setting 0.00 to 400.0 When the motor free-running frequency falls below this lower limit frequency, the Inverter restarts at 0 Hz (examples 3 and 4) 0.00 Hz b008 Trip retry selection *7 00: Outputs an alarm after a trip 01: Restarts from 0 Hz at retry 02: Matches the frequency at retry and starts 03: Performs frequency pull-in start at retry and trips after deceleration stop 04: Performs frequency pull-in restart at retry 0.0