(F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
Parameters
5 - 254
Variable-torque acceleration/deceleration (Pr. 290 = "6")
This function is suitable to accelerate/decelerate a variable torque load such as a fan and blower in a
short time.
Linear acceleration/deceleration is performed in the area where the output frequency > base fre-
quency.
I002561E_B
Fig. 5-99:
Characteristic for parameter 29 = 6
NOTES
When the base frequency is out of the range 45 to 65 Hz, the linear acceleration/deceleration is
performed even if Pr. 29 = "6".
Even if Pr. 14 "Load pattern selection" = "1 (variable torque load)", variable torque acceleration/
deceleration setting is prioritized and the inverter operates as Pr. 14 = "0 (constant torque load)".
For the variable torque acceleration/deceleration time setting, set the time period to reach Pr. 3
"Base frequency". (Not the time period to reach Pr. 20 "Acceleration/deceleration reference fre-
quency".)
The variable torque acceleration/deceleration is disabled during PM sensorless vector control.
(Linear acceleration/deceleration is performed.)
Parameters referred to
Pr. 3
Base frequency
=>
Pr. 7
Acceleration time
=>
Pr. 8
Deceleration time
=>
Pr. 20
Acceleration/deceleration reference frequency
=>
Pr. 10
DC injection brake operation frequency
=>
Pr. 178 to Pr. 182
(input terminal function selection)
=>
[Variable-torque acceleration/deceleration]
Pr. 3 Base frequency
Set frequency
Time
Pr. 8
Pr. 7
Acceleration time
Deceleration time
Output frequency
Summary of Contents for FR-A820-00046 (0.4K)
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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 ...
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Page 1212: ...EC Declarations of Conformity Appendix A 72 A 7 2 FR A846 series ...
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