INVT Goodrive350-19 Series Operation Manual page 382

Goodrive350-19 series VFD for crane
Function
Name
code
Smooth lifting
P93.34 protection
frequency
Smooth lifting
torque change
P93.35
rate protection
point 1 (in ACC)
Smooth lifting
torque change
rate protection
P93.36
point 2 (in
constant speed
running)
Smooth lifting
torque change
P93.37 rate protection
point 3 (exiting
smooth lifting)
Description
running) is not 0, autotuning is successful.
Otherwise, you have to perform autotuning
again.
P93.32, P93.33setting range: 0.0–50.0%(of the
rated torque from the autotuning result)
When P93.20=2, indicating stable lifting
protection is enabled to attenuate the shock
caused by violent jittering up and down when the
load is lifted and by sudden changes in load
during high-speed running.
During constant speed running, if the detected
torque change rate is greater than the smooth
lifting torque change rate protection point 2
(specified by P93.36), the smooth lifting function
is enabled, and the smooth lifting function set
frequency (P93.34) is used. At this time, if the
detected torque change rate is less than the
smooth lifting torque change rate protection
point 3 (specified by P93.37), acceleration to the
set frequency is executed, at gear-1 speed, as
shown in the preceding figure.
Output
frequency
Speed of
gear 1
P93.34
Load change
rate
P93.36
P93.37
Start/stop
command
Smooth lifting during constant speed running
During ACC running, if the detected torque
change rate is greater than the smooth lifting
torque change rate protection point 1 (specified
by P93.35), the smooth start function is enabled,
-370-
Time
Time
Start
Function parameter list
Default Modify
○
10.00Hz
○
80.0%/s
○
30.0%/s
10.0%/s