Mitsubishi Electric FR-D720-008 Instruction Manual page 90

Set V/F pattern
Pr. 14 = 2
For vertical lift loads
At forward rotation boost...Pr. 0 (Pr. 46)
setting
At reverse rotation boost...0%
100%
Forward
rotation
Reverse
Pr. 0
rotation
Pr. 46
Base frequency
Output frequency (Hz)
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.
When the RT signal is ON, the other second functions are also valid.
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
86
Pr. 14 = 3
For vertical lift loads
At forward rotation boost...0%
At reverse rotation boost...Pr. 0 (Pr. 46)
100%
Reverse
rotation
Forward
Pr. 0
rotation
Pr. 46
Base frequency
Output frequency (Hz)
Refer to page 71
Refer to page 83
Refer to page 111
Refer to page 73
(3) Constant-torque
(setting "2, 3")
Set "2" when a vertical lift load is fixed as power
driving load
setting
regenerative load at reverse rotation.
Pr. 0 Torque boost
rotation and torque boost is automatically
changed to "0%" during reverse rotation. Pr. 46
Second torque boost is 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.
load application
at forward rotation
is valid during forward
and