8 - 73
8 Applied Settings
High-function General-purpose Inverter RX2 Series User’s Manual
8-3 Pro
tect
ive Fu
nct
ions
8
8-3
-6 Instantaneo
us Pow
er Interr
uption/Und
ervoltag
e Detectio
n
Precautions for Correct Use
• When selecting a retry function, see
• When the control circuit power supply is turn off and the power is lost, the operation mode will
be the same as the mode at power-on. For subsequent operations, see the explanation
about the restart after reset.
• When direct current (P-N) is supplied to control power supply terminal R0 and T0, the
inverter may detect under-voltage at power interruption and then trip. If there is any problem
with your system, set [bb-27] to 00 or 02.
• Even if Selection of instantaneous power failure trip [bb-20] is set to other than 0 and Selec-
tion of instantaneous power failure/under-voltage trip during stopping [bb-27] is set to “Dis-
abled” (00 or 02), [E016] Instantaneous power failure error will occur when the actual power
failure time exceeds the allowable instantaneous power failure time.
• Even during a retry operation, the retry will be interrupted if the instantaneous power fail-
ure/under-voltage condition continues for about 40 seconds, and error code [E009]
Under-voltage or [E016] Instantaneous power failure will be displayed.
• When connecting separate power supplies to control power supply terminals (R0 and T0),
and if an instantaneous power failure occurs at the main power supply terminals (R, S, and
T), it will take about 1 second of the detection time before an instantaneous power failure
error and under-voltage error occur. When braking is performed by [AL] alarm signal (output
terminal function 017), the braking response will be slow, and therefore use the brake control
function.
Parameter
Item
Parameter
Data
Description
Default
data
The number of retries
after instantaneous
power failure
[bb-20]
0 to 16 / 255
Detects a decrease in the control power
supply and restarts the motor when the
power supply is recovered. When 0 is speci-
fied, the inverter immediately trips when an
instantaneous power failure occurs.
0
The number of retries
after under voltage
[bb-21]
0 to 16 / 255
Detects a decrease in the main power sup-
ply and restarts the motor when the power
supply is recovered. When 0 is specified, the
inverter immediately trips when an
under-voltage condition occurs.
0
Selection of restart
mode @Instanta-
neous power failure/
under-voltage trip
[bb-24]
00
Restarts with 0 Hz at retry.
01
01
Restarts with speed matching at retry.
02
Restarts with frequency pull-in at retry.
04
Restarts with speed matching at retry, and
trips after deceleration stop.
Allowable under-volt-
age power failure time
[bb-25]
0.3 to 25.0 (s)
Restarts if the instantaneous power failure is
within the set time.Trips if the instantaneous
power failure exceeds the specified time.
1.0
Retry wait time before
motor restart
[bb-26]
0.3 to 100.0 (s) Sets the time before restarting.
0.3
Instantaneous power
failure/under-voltage
trip alarm enable
[bb-27]
00
Disabled
00
01
Enabled
02
Disabled during stopping and during decel-
eration stop after the operation command
has been turned off.
Summary of Contents for RX - 2
Page 1: ...High function General purpose Inverter RX2 Series User s Manual I620 E1 01 3G3RX2...
Page 54: ...1 Overview 1 22 High function General purpose Inverter RX2 Series User s Manual...
Page 136: ...2 Design 2 82 High function General purpose Inverter RX2 Series User s Manual...
Page 592: ...8 Applied Settings 8 192 High function General purpose Inverter RX2 Series User s Manual...
Page 754: ...11 Options 11 56 High function General purpose Inverter RX2 Series User s Manual...
Page 794: ...12 Troubleshooting 12 40 High function General purpose Inverter RX2 Series User s Manual...
Page 919: ......
