83
Set V/F pattern
(3) Constant-torque load application
(setting "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.
Pr. 46 Second
torque boost
is made valid when the RT signal
turns on.
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.
For the RT signal, set "3" in any of
Pr. 178 to Pr.
182 (input terminal function selection)
to assign
the function.
NOTE
Load pattern selection does not function under general-purpose magnetic flux vector control.
Changing the terminal assignment using
Pr. 178 to Pr. 182 (input terminal function selection)
may affect the other
functions. Make setting after confirming the function of each terminal.
Parameters referred to
Pr. 0, Pr. 46 (Torque boost)
Pr. 3 Base frequency
Pr. 178 to Pr. 182 (input terminal function selection)
General-purpose magnetic flux vector control
For vertical lift loads
At forward rotation boost...
Pr. 0
(
Pr. 46
)
setting
At reverse rotation boost...0%
100%
Output voltage
Base frequency
Output frequency (Hz)
Reverse
rotation
Forward
rotation
Pr. 0
Pr. 46
Pr. 14
= 2
For vertical lift loads
At forward rotation boost...0%
At reverse rotation boost...
Pr. 0
(
Pr. 46
)
setting
100%
Output voltage
Base frequency
Output frequency (Hz)
Forward
rotation
Reverse
rotation
Pr. 0
Pr. 46
Pr. 14
= 3
REMARKS
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.
In addition, when the RT signal is on, the other second functions are also valid.
Содержание FR-D700 Series
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