Shenzhen Hpmont Technology Co., Ltd.
Chapter 6 Function Introduction
HD31 Series User Manual V1.1
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37
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Ref. Code
Name Description
Setting Range [Default]
F09.07
Torque boost of motor
0.0 - 30.0
[55kW and below: 2.0%]
[75 - 132kW: 1.0%]
F09.08
Cut-off point used for manual torque boost of motor
0.0 - 50.0 (F08.03) [10.0%]
In order to compensate the torque drop at low frequency, HD31 can boost the voltage so as to boost the
torque.
•
No matter what kind of V/f curve is set by
F09.00, the torque boost is enabled.
F09.07 is manually torque boost.
•
If F09.07=0, it is manually torque boost. User
needs to set rated frequency (F08.03) and rated
rotary speed (F08.04) of the motor correctly
according to its nameplate.
F09.08 is relative to percentage of rated frequency
(F08.03).
F09.09
Slip compensation gain of motor
0.0 - 300.0 [100.0%]
F09.10
Slip compensation filter time of motor
0.01 - 10.00 [0.10s]
F09.11
Slip compensation limit of motor
0.0 - 250.0 [200.0%]
F09.12
Compensation time constant of motor
0.1 - 25.0 [2.0s]
The motor slip changes with the load torque, which results in the variance of motor speed. Reduce the
influence through slip compensation (HD31 will automatically adjust its output frequency according to the
load torque).
•
In driving status (the actual speed
<
the setting speed) and in
generating status (the actual speed > the setting speed), the slip
compensation gain (F09.09) should be increased gradually.
•
The auto slip compensation depends on the rated slip of motor,
consequently make sure the rated frequency (F08.03) and rated
speed (F08.04) are set correctly.
•
Range of slip compensation = F09.11 × Rated slip.
•
Rated slip = F08.03 - F08.04 × Np / 60.
•
Np is the number of the motor pole pairs.
F09.14
AVR (automatic voltage regulation) function of motor
0 - 2 [1]
0:
Disabled.
1: Enabled all the time.
2: Disabled in Dec process.
•
The output voltage can be regulated to maintain constant via AVR. Thus, normally the AVR function
should be enabled, especially when the input voltage is higher than the rated voltage.
•
In Dec process, if F09.14 = 0 or 2, the running current will be a little higher; while if F09.14 =1, the motor
will decelerate steadily and the current will be smaller.
F09.15
Oscillation-suppression mode of motor
0,1 [0]
0: Depend on excitation current component.
1: Depend on torque current component.
F09.16
Oscillation-suppression coefficient of motor
0 - 200 [50]
This function is used to damp oscillation when output current is continually unstable.
•
This function helps to keep the motor running smoothly through correctly adjusting the setting of
F09.16.
Voltage
0
Frequency
F08.03
F08.01
F09.08max
Voltage of manual
torque boost
Boosted
value
-100%
100%
Positive slip
compensation
Negative slip
compensation
Slip
Load
6