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Chapter IV Function Parameter Table
69
Parameter
Code
Parameter
name
Parameter detailed description
Minimum
Unit
Factory
value
Change
F7.14
Reserved
-
-
*
F7.15
Reserved
-
-
*
F7.16
Reserved
-
-
*
F7.17
Reserved
-
-
*
F7.18
Reserved
-
-
*
F7.19
Reserved
-
-
*
F7.20
Overcurre
nt stall
speed
recovery
time limit
Set range: 0.01
~
600.00s
After the overcurrent stall is canceled, the
drive output frequency will resume to the
set frequency, but the fastest acceleration
/ deceleration time for recovery is limited
by this function code.
0.01s
0.20s
○
F7.21
Torque
boost limit
F7.21 set range: 0.1
~
30.0%
F7.22 set range: 0.00
~
F3.04
F7.23 set range: 0
~
500 (when set to 0, it
is manual torque boost)
F7.24 set range: 1
~
10000ms
F7.25 set range: 0.00
~
F3.04
F7.26 set range: 0
~
500
F7.27 set range: 1
~
10000ms
F7.28 set range: 0
~
100%
1. The torque boost is to compensate the
output voltage of the drive when the drive
is running at low frequency. The torque
boost can improve the low frequency
characteristics in V/F control mode.
2. The torque boost amount shall be set
appropriately according to the load. The
load can increase the boost amount, but
the boost amount shall not be set too
large. When the torque boost is too large,
the motor will run in over-excitation and
the drive output current will increase. The
motor heats up and the efficiency
decreases.
3. Torque boost cutoff point: Below this
frequency point, the torque boost is valid,
and is invalid when the set frequency is
exceeded.
4. Torque boost gain switching frequency
point: Switching frequency point during
high-speed and low-speed variable gains.
5. Setting of the torque boost gain and
integration time: Increasing the gain can
0.1%
4.0%
○
F7.22
Torque
boost
cutoff
point
0.01Hz
50.00Hz
○
F7.23
Torque
boost gain
1
1
20
○
F7.24
Torque
boost
integral
time 1
1ms
1500ms
○
F7.25
Torque
boost gain
switching
frequency
point
0.01Hz
Model
determina
tion
○
F7.26
Torque
boost gain
2
1
10
○