12-14-7
Chapter 12
Inverter Function
When instantaneous power failure/under-voltage
occurs [bb-24]=02
Ex. 1: Power recovery within Allowable
instantaneous power failure time [bb-25]
Parameter
• If a power failure has occurred so that the power
to the inverter's control power supply terminals
(R0,T0) is lost, and then the inverter is restarted, it
is considered as power-on and the inverter will
operate in accordance with the restart after reset
[bb-41].
• Even if the power to control power supply
terminals (R0, T0) is lost, it will take time until the
internal power supply is completely lost.
• Trip after instantaneous power
failure/under-voltage can be switched between
"enabled" and "disabled" by using [bb-27]
Selection of instantaneous power
failure/under-voltage trip during stopping. This will
prevent the occurrence of an error during stopping.
If the error is prevented, the output terminal [AL]
will not turn on.
t0: Instantaneous power failure time
t1: Allowable instantaneous power failure time [bb-25]
t2: Retry wait time [bb-26]
Ex. 2: Power recovery after Allowable instantaneous
power failure time [bb-25]
• In a system where the power to control power
supply terminals (R0, T0) gradually decreases, it
is possible to cause a trip when Allowable
instantaneous power failure time has elapsed.
• To make the power to control power supply
terminals (R0, T0) last as much as possible by the
inverter alone when an instantaneous power
failure occurs, remove the J51 connector cables
from terminals R0 and T0, connect the main circuit
terminals P and R0 to each other, and connect the
main terminals N and T0 to each other. Use 0.75
mm
2
or heavier wires for the connections.
Item
Parameter
Data
Description
Selection of instantaneous power
failure/under-voltage retry
[bb-24]
02
Performs frequency pull-in restart.
Allowable instantaneous power
failure time
[bb-25]
0.3~25.0(s)
Restarts the motor if it is within the
allowable time.
Retry wait time after instantaneous
power failure/under-voltage
[bb-26]
0.3~100.0(s)
Sets the wait time after the operation
command.
!
t0
t2
t1
Free-running
Power
supply
Inverter output
Motor speed
[bb-42]
Restarting with frequency pull-in
t1
T0
Free-running
Power
supply
Inverter output
Motor speed
[bb-42]
Содержание SJ Series
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Страница 642: ...18 49 Chapter 18 Tips FAQ Troubleshooting Memo ...
Страница 650: ...19 8 Chapter 19 Maintenance and Inspection Memo ...
Страница 661: ...20 11 Chapter 20 Specifications Model P1 P1 200V class 02950 L 550L Dimension W mm H mm D mm 700 480 250 ...
Страница 662: ...20 12 Chapter 20 Specifications Model P1 P1 400V class 01760 H 750H 02130 H 900H Dimension W mm H mm D mm 390 700 270 ...
Страница 663: ...20 13 Chapter 20 Specifications Model P1 P1 400V class 02520 H 1100H 03160 H 1320H Dimension W mm H mm D mm 480 740 270 ...
Страница 678: ...21 7 Chapter 21 Technical Notes SJ700D SJ P1 ND normal duty SJ700D 550LFF3 P1 02950 LFEF P1 550LFF ...
Страница 686: ...21 15 Chapter 21 Technical Notes SJ700B SJ P1 LD low duty VLD very low duty SJ700B 750LFF P1 02950 LFEF P1 550LFF ...
Страница 781: ...Appendix 1 70 Appendix 1 List of Parameters Memo ...