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8 Applied Settings
High-function General-purpose Inverter RX2 Series User’s Manual
8-2 Tripless Functions
8
8-2-6 Restart during Power Interruption/Undervoltage
Parameter
(Ex.1) When [bb-21] = 00, tripping occurs
(Ex.2) When [bb-21] ≠00 and [bb-24] = 00, it restarts at 0 Hz.
Item Parameter Data Description
Default
data
The number of retries
after under voltage
[bb-21]
00 to 16/
∞(255)
(Counts)
Sets the undervoltage retry restarting
counts.
If this is set to 0, the motor will trip upon
undervoltage.
0
Selection of restart
mode @Instanta-
neous power failure/
under-voltage trip
[bb-24]
00 Restarts at 0 Hz
01
01 Restarts with the frequency matching
02 Restarts upon frequency pull-in
03
Detection speed (frequency) <v2.00 or
higher>
04
Trips after decelerating and stopping with
the frequency matching
Retry wait time before
motor restart
[bb-26] 0.3 to 100.0(s)
Starts after waiting for the set time upon
power voltage recovery.
0.3
Instantaneous power
failure/under-voltage
trip alarm enable
[bb-27]
00 Disabled
0001 Enabled
02 Disabled during stop and deceleration stop
Power Supply
UV Level
UV error occurs
Free Running
P-N Voltage
Inverter
Output
Motor Speed
Output signal
[AL]
Power Supply
UV Level
Free Running
P-N Voltage
Inverter
Output
Motor Speed
Retry Standby Time
Output signal
[AL]
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