4-42
4-2 Function Mode
4
Functions
<Group B: Detailed Function Parameters>
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).
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 Active Frequency Matching start at
retry and trips after deceleration stop
*1
*3
04: Performs Active Frequency Matching restart at
retry (example 1)
*3
00
b002
Allowable
momentary power
interruption time
0.3 to 25.0:
If the momentary power interruption is within the set
time, the Inverter follows the setting in b001.
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
00
b005
Momentary power
interruption retry
time selection
00: Restarts 16 times during momentary power
interruption
01: Restarts limitlessly during momentary power
interruption
00
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 Active Frequency Matching start at
retry and trips after deceleration stop
04: Performs Active Frequency Matching restart at
retry
00
b009
Undervoltage retry
time selection
00: Restarts 16 times in the event of undervoltage
01: Restarts limitlessly in the event of undervoltage
00
b010
Overvoltage/
overcurrent retry
time
1 to 3
Select the number of retry times in the event of
overvoltage/overcurrent
*5
3Time
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