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10. Advanced functions
10-6 SV-iC5
Example
Rated frequency = 60Hz
Rated RPM = 1740rpm
Number of motor poles= 4
Hzf
s
2
120
41740
60 =
×
−=
10.6 Slip compensation
Group LED Display Parameter Name
Set
value
Min/Max
Range
Factory
Defaults
Unit
H30
[Motor type select]
-
0.2/2.2
-
H31
[Number of motor poles]
-
2/12
4
H32
[Rated slip frequency]
-
0/10
- Hz
H33
[Motor rated current]
-
1.0/12
- A
H34
[Motor No Load Current]
-
0.1/12
- A
H36
[Motor efficiency]
-
50/100
- %
H37
[Load inertia rate]
-
0/2
0
Function
group 2
H40
[Control mode select]
1
0/3 0
Set H40 – [Control mode select] to 1 {Slip compensation}.
This function enables the motor to run in constant speed by compensating inherent slip in an induction motor.
If motor shaft speed decreases significantly under heavy loads then this value should be increased.
H30 : Set the motor type connected to the inverter.
0.2 0.2kW
0.4 0.4kW
0.75 0.75kW
1.5 1.5kW
H30 [Motor type select]
2.2 2.2kW
H31 : Enter the pole number on the Motor nameplate.
Frequency
Run
command
Dwell time
Dwell freq.
Start freq.