(A) Application parameters
Parameters
5 - 488
5.14.1
Electronic bypass function
The inverter contains complicated sequence circuits for switching between the commercial power
supply operation and inverter operation. Therefore, interlock operation of the magnetic contactor for
switching can be easily performed by simply inputting start, stop, and automatic switching selection
signals.
The coasting time when Pr. 57 = "0" is as shown below. (When Pr. 162 "Automatic restart after
instantaneous power failure selection" is set to the initial value.)
FR-A820-00105(1.5K) or lower and FR-A840-00052(1.5K) or lower: . . . . . . .0.5 s
FR-A820-00167(2.2K) to FR-A820-00490(7.5K) and
FR-A840-00083(2.2K) to FR-A840-00250(7.5K): . . . . . . . . . . . . . . . . . . . . . . . . . .1 s
FR-A820-00630(11K) to FR-A820-03160(55K) and
FR-A840-00310(11K) to FR-A840-01800(55K): . . . . . . . . . . . . . . . . . . . . . . . . . . .3.0 s
FR-A820-03800(75K) or higher and FR-A840-02160(75K) or higher: . . . . . .5.0 s
Pr.
Name
Initial
value
Setting
range
Description
57
A702
Restart coasting time
9999
0
Coasting time differs according to the inverter
capacity.
0.1 to 30 s
Set the waiting time for the inverter to perform a
restart at power restoration after an instantaneous
power failure.
9999
No restart
58
A703
Restart cushion time
1 s
0 to 60 s
Set the voltage cushion time for restart.
135
A000
Electronic bypass sequence
selection
0
0
Without electronic bypass sequence
1
With electronic bypass sequence
136
A001
MC switchover interlock time
1 s
0 to 100 s
Set the operation interlock time for MC2 and MC3.
137
A002
Start waiting time
0.5 s
0 to 100 s
Set a time period that is a little longer than the time
period from the ON signal input to the actual pick-up
operation of MC3 (0.3 to 0.5 s).
138
A003
Bypass selection at a fault
0
0
Inverter output stop (motor coasting) at inverter
failure
1
Automatic switchover to commercial power supply
operation at inverter failure. (Switchover is not
possible when an external thermal relay (E.OHT) or
CPU fault (E.CPU) is occurring.)
139
A004
Automatic switchover
frequency from inverter to
bypass operation
9999
0 to 60 Hz
Set the frequency where the inverter operation is
switched to commercial power supply operation.
The inverter operation is performed from a start to
Pr. 139 setting, then it switches automatically to the
commercial power supply operation when the output
frequency is equal to or above Pr. 139.
9999
Without automatic switchover
159
A005
Automatic switchover
frequency range from bypass
to inverter operation
9999
0 to 10 Hz
Set the frequency where the commercial power
supply operation, which has been switched from the
inverter operation with Pr. 139, switches back to
inverter operation. When the frequency command
becomes less than (Pr. 139 – Pr. 159), the motor
switches automatically to inverter operation and
operates at the frequency of the frequency
command. Turning OFF the inverter start command
(STF/STR) also switches the operation to the inverter
operation.
9999
To switch the commercial power supply operation,
which has been switched from the inverter operation
with Pr. 139, to the inverter operation again, the
inverter start command (STF/STR) is turned OFF. The
operation switches to the inverter operation, and the
motor decelerates to a stop.
V/F
V/F
V/F
Magnetic flux
Magnetic flux
Magnetic flux Sensorless
Sensorless
Sensorless Vector
Vector
Vector
Summary of Contents for FR-A820-00046 (0.4K)
Page 2: ......
Page 4: ......
Page 144: ...System configuration for Ethernet communication FR A800 E Installation and wiring 2 114 ...
Page 202: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Page 1090: ...Check first when you have a trouble Protective functions 6 50 ...
Page 1189: ...Appendix EC Declarations of Conformity FR A800 A 49 ...
Page 1190: ...EC Declarations of Conformity Appendix A 50 ...
Page 1191: ...Appendix EC Declarations of Conformity FR A800 A 51 ...
Page 1192: ...EC Declarations of Conformity Appendix A 52 ...
Page 1193: ...Appendix EC Declarations of Conformity FR A800 A 53 ...
Page 1194: ...EC Declarations of Conformity Appendix A 54 ...
Page 1195: ...Appendix EC Declarations of Conformity FR A800 A 55 ...
Page 1196: ...EC Declarations of Conformity Appendix A 56 ...
Page 1197: ...Appendix EC Declarations of Conformity FR A800 A 57 ...
Page 1198: ...EC Declarations of Conformity Appendix A 58 ...
Page 1199: ...Appendix EC Declarations of Conformity FR A800 A 59 ...
Page 1200: ...EC Declarations of Conformity Appendix A 60 ...
Page 1201: ...Appendix EC Declarations of Conformity FR A800 A 61 ...
Page 1202: ...EC Declarations of Conformity Appendix A 62 ...
Page 1203: ...Appendix EC Declarations of Conformity FR A800 A 63 ...
Page 1204: ...EC Declarations of Conformity Appendix A 64 ...
Page 1205: ...Appendix EC Declarations of Conformity FR A800 A 65 ...
Page 1206: ...EC Declarations of Conformity Appendix A 66 ...
Page 1207: ...Appendix EC Declarations of Conformity FR A800 A 67 ...
Page 1208: ...EC Declarations of Conformity Appendix A 68 ...
Page 1209: ...Appendix EC Declarations of Conformity FR A800 A 69 ...
Page 1210: ...EC Declarations of Conformity Appendix A 70 ...
Page 1211: ...Appendix EC Declarations of Conformity FR A800 A 71 ...
Page 1212: ...EC Declarations of Conformity Appendix A 72 A 7 2 FR A846 series ...
Page 1213: ...Appendix EC Declarations of Conformity FR A800 A 73 ...
Page 1214: ...EC Declarations of Conformity Appendix A 74 ...
Page 1215: ...Appendix EC Declarations of Conformity FR A800 A 75 ...
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