Power Electronics SD700 Series User Manual

POWER ELECTRONICS
SD700
DESCRIPTION OF PROGRAMMING PARAMETERS
55
4.19.3. Subgroup 19.3 – S19.3: Motor Model
Parameter /
Default Value
Name /
Description
Range
Function
Set on
RUN
1 R. STR=1%
STATOR RESISTOR
G19.3.1 / Stator
resistance (Rs)
0.0 to 9.9%
Set as a percentage of motor rated impedance.
Stator resistance (Rs): It is used to compensate the iron losses and copper losses
of the motor.
Rotor resistance (Rr): A key parameter that directly concerns the output torque.
Motor inductance (Lm): It is an interesting parameter if the equipment works with
vector control and G19.1.2 = AVC. It is the main inductance of the motor that
defines the magnetic field strength. It is a key parameter that directly concerns the
motor flux. Typical values can range from 75% (small motors) to 800% (large
motors).
Note: The following table shows the default values for drives of any nominal
voltage.
Default Values for All Powers
G2.3- Motor
Power (kW)
Value G19.3.1
(%)
Value G19.3.2
(%)
Value G19.3.3
(%)
2.2
5.30
5.30
100
4
4.30
4.30
100
5.5
4.00
4.00
100
7.5
3.80
3.80
100
11
3.50
3.50
100
15
3.10
3.10
100
18.5
2.90
2.90
100
22
2.67
2.67
100
30
2.16
2.16
250
37
2.10
2.10
250
45
1.90
1.90
250
55
1.87
1.87
250
75
1.60
1.60
250
90
1.50
1.50
250
110
1.36
1.36
250
132
1.20
1.20
250
150
1.09
1.09
250
160
1.03
1.03
450
200
0.79
0.79
450
250
0.75
0.75
450
315
0.70
0.70
450
355
0.65
0.65
450
400
0.60
0.60
450
450
0.52
0.52
450
500
0.46
0.46
450
560
0.43
0.43
450
630
0.35
0.35
450
710
0.40
0.40
450
800
0.32
0.32
450
900
0.30
0.30
450
1000
0.25
0.25
450
G19.3.4 = 5% of G19.3.3
Adjust mode: When initializing factory settings (1) or manually modifying the
Motor Nominal Power (G2.3) (2), the values are initialized according to the table,
values outside the table are estimated according to the table.
When auto-tuning is performed (G19.1.8) (3) the value of parameters is
automatically changed to the value measured.
In all cases, the adjustment range is + / -30% of initialized value in any of the
three scenarios given (1), (2), (3).
Note: If this G19.3.1 is set too high then increased motor currents can reach the
current limit preventing further acceleration to the motor. We recommend
consulting the above standard value table as Rs value is variable according to the
drive capacity.
YES
2 R. RTR = 0%
G19.3.2 / Rotor
resistance (Rr)
0.0% to 15%
3 Lm = 40%
G19.3.3 /Motor
inductance (Lm)
40% to
800%
4 L.I. = 0%
G19.3.4 / Stray
inductance
0.0% to 50%
5 FL WEAK = 90%
G19.3.5/
Weakening field
50% to
100%
The weakening field occurs when the drive cannot give more voltage than it
receives from the power supply, and when the frequency exceeds the rated
frequency of the motor. In this event, only the frequency will be regulated and the
voltage will keep constant producing the weakening of the motor field.
YES

Power Electronics SD700 Series Specifications

General

Brand	Power Electronics
Model	SD700 Series
Category	Inverter
Language	English