INVT Goodrive350-19 Series Operation Manual page 329

Goodrive350-19 Series VFD for Crane
Function
Name
code
Load limit T1 in
stepped speed limit
P91.18
upward running
Restricted
frequency f1 in
P91.19 stepped speed limit
upward running
Load limit T2 in
stepped speed limit
P91.20
upward running
Restricted
frequency f2 in
P91.21 stepped speed limit
upward running
Load limit T3 in
stepped speed limit
P91.22
upward running
P91.23 Restricted
Description
frequency is limited to 75Hz. If P91.08=1, the
frequency 75Hz is used for running. If
P91.08=2, the max. running frequency is 75Hz,
and the set frequency is used for running.
The similar calculation method is applicable to
motor downward running, only replacing P91.16
with P91.17.
Note: During open/closed loop switchover
(there is difference in load detection value),
adjust P91.16 and P91.17, and the heavy load
speed limit frequency cannot be lower than the
heavy load speed limit detection frequency
P91.14.
P91.16, P91.17 setting range: 30.0%–120.0%
(of the motor rated power)
Limited frequency f
P00.03
P91.23 (f3)
P91.21 (f2)
P91.19 (f1)
P91.22
(T3)
When the stepped speed limit mode is used,
the limit parameters for upward running and for
downward running are set separately and can
be adjusted according to the actual situation.
When the detected load (open-loop output
current or closed-loop output torque) exceeds
the limited value, the running frequency must
be lower than the set restricted frequency.
For example, during motor upward running,
when the detected load is greater than P91.18,
the frequency is restricted to P91.19 (or when
the set frequency is less than P91.19, the
running frequency is the set frequency). When
the detected load is greater than P91.20 (but
less than P91.18), the frequency is restricted to
-317-
Max. output
frequency
P91.20 P91.18
Tmax
(T2) (T1)
Function parameters
Default Modify
70.0%
Load
T
50.00Hz
45.0%
75.00Hz
25.0%
100.00Hz
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