TT100
·
29
·
=60×50/ (2×1.00) =1500rpm
Endmost linear speed: rotary speed × perimeter=1500×0.314=471(meters/second)
F136 Slip compensation
Setting range: 0
～
10%
Mfr‟s value: 0
· Under V/F controlling, rotary speed of motor rotor will decrease as load increases. Be assured that rotor
rotate speed is near to synchronization rotary speed while motor with rated load, slip compensation should be
adopted according to the setting value of frequency compensation.
F137 Modes of torque compensation
Setting range:
0: Linear compensation;
1: Square compensation;
2: User-defined multipoint compensation
3: Auto torque compensation
Mfr‟s value: 3
F138 Linear compensation
Setting range: 1
～
16
Mfr‟s value:
0.2-3.7: 5
5.5-30: 4
Above 37: 3
F139 Square compensation
Setting range: 1: 1.5 2: 1.8
3: 1.9 4: 2.0
Mfr‟s value: 1
To compensate low-frequency torque controlled by
V/F, output voltage of inverter while
low-frequency should be compensated.
When F137=0, linear compensation is chosen and
it is applied on universal constant-torque load;
When F137=1, square compensation is chose and
it is applied on the loads of fan or water pump;
When F137=2, user-defined multipoint
compensation is chosen and it is applied on the
special loads of spin-drier or centrifuge;
This parameter should be increased when the load
is heavier, and this parameter should be decreased
when the load is lighter.
If the torque is elevated too much, motor is easy to
overheat, and the current of inverter will be too high. Please check the motor while elevating the torque.
When F137=3, auto torque compensation is chose and it can compensate low-frequency torque automatically,
to diminish motor slip, to make rotor rotary speed close to synchro rotary speed and to restrain motor
vibration. Customers should set correctly motor power, rotary speed, numbers of motor poles, motor rated
current and stator resistance. Please refer to the chapter “Operation process of measuring motor stator
resistance parameters”.
F140 User-defined frequency point F1
Setting range: 0
～
F142
Mfr‟s value: 1.00
F141 User-defined voltage point V1
Setting range: 0
～
100
％
Mfr‟s value: 4
F142 User-defined frequency point F2
Setting range: F140
～
F144
Mfr‟s value: 5.00
F143 User-defined voltage point V2
Setting range: 0
～
100
％
Mfr‟s value: 13
f
16
Turnover
frequency
V
（％）
Fig 5-3 Torque Promotion
1