(G) Control parameters
Parameters
5 - 694
Application for variable-torque load (Pr. 14 = "1")
●
The output voltage will change in square curve against the output frequency at the base frequen-
cy or lower. (1.75th-power curve for FR-A820-01870(37K) or higher, and FR-A840-00930(37K) or
higher)
●
Set this parameter when driving a load with load torque change proportionally against the square
of the rotation speed, such as fan and pump.
Vertical lift load applications (Pr. 14 = "2, 3")
●
Set "2" when a vertical lift load is fixed as power driving load at forward rotation and regenerative
load at reverse rotation.
●
Pr. 0 "Torque boost" is valid during forward rotation, and torque boost is automatically changed
to "0%" during reverse rotation.
●
Set "3" for an elevated load that is in the driving mode during reverse rotation and in the
regenerative load mode during forward rotation according to the load weight, e.g. counterweight
system.
Fig. 5-342:
Variable-torque load
I002751E
I001547E
Fig. 5-343:
Characteristic with manual torque boost
NOTE
When torque is continuously regenerated as vertical lift load, it is effective to set the rated voltage
in Pr. 19 "Base frequency voltage" to prevent trip due to current at regeneration.
100%
Output frequency (Hz)
Pr. 3 Base frequency
Ou
tp
u
t v
o
lt
a
g
e
For vertical lift loads
At forward rotation boost ... Pr. 0 setting
At reverse rotation boost ... 0 %
Pr. 14 = 2
Pr. 0
Output v
o
ltage
Output frequency [Hz]
Base frequency
Forward
rotation
Reverse
rotation
For vertical lift loads
At forward rotation boost ... 0 %
At reverse rotation boost ... Pr. 0 setting
Pr. 14 = 3
Pr. 0
Output v
o
ltage
Output frequency [Hz]
Base frequency
Reverse
rotation
Forward
rotation
Summary of Contents for FR-A820-00046 (0.4K)
Page 2: ......
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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 ...
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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 ...
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Page 1202: ...EC Declarations of Conformity Appendix A 62 ...
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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 ...
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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 ...
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