Power Electronics SD700 - Page 55

POWER ELECTRONICS
SD700FR SERIES
DESCRIPTION OF PROGRAMMING PARAMETERS
53
4.19.3. Subgroup 19.3 – S19.3: Motor Model
Parameter /
Default Value
Name /
Description
Range
Function
Set on
RUN
1 R STATOR=0.9%
STATOR RESISTOR
G19.3.1 / Stator
resistance (Rs)
0.0 – 9.9%
Set as a percentage of motor rated impedance.
This parameter is used to compensate for motor voltage drop. It is very important
for applications with large torque transients, especially at low speed. If the
resistance value entered is very too low then the motor torque produced will be
reduced. When this value is increased, then torque boost will be increased.
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 (%)
G2.3- Motor
Power (kW)
Value (%)
2.2
5.30
150
1.09
4
4.30
160
1.03
5.5
4.00
200
0.79
7.5
3.80
250
0.75
11
3.50
315
0.70
15
3.10
355
0.65
18.5
2.90
400
0.60
22
2.67
450
0.52
30
2.16
500
0.46
37
2.10
560
0.43
45
1.90
630
0.35
55
1.87
710
0.40
75
1.60
800
0.32
90
1.50
900
0.30
110
1.36
1000
0.25
132
1.20
* Adjust mode: When initializing factory settings (1) or manually modifying the
Motor Nominal Power (G2.3) (2). The value of the current limit factor is initialized
according to the table; values outside the table are estimated according to the
table.
When auto-tuning is performed (G19.1.5) (3) the value of stator resistance 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 value 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
4 KP Cloop = 95%
G19.3.4 / Closed
loop proportional
speed constant.
0.0% to
100%
Allows the setting of the proportional gain value of the speed regulator. If a greater
control response is needed, this value has to be increased.
Note: When increasing too much this value, the system can be destabilized.
YES
5 IT CLoop = 95%
G19.3.5 / Speed
closed loop
integration time
setting.
0.0% to
100%
Allows the adjustment of the integration time of the speed regulator. In the event
of needing more precision, this value has to be increased.
Note: When increasing this value too much, the system can get slower.
YES
6 TQ Kp = 95%
G19.3.6 / Torque
proportional
closed loop
constant.
0.0% to
100%
Allows setting the value of the proportional gain of the overcurrent regulator. If a
greater control response is needed this value has to be increased.
Note: When increasing too much this value, the system can become more
unstable.
YES
7 TQ It = 95%
G19.3.7 / Torque
closed loop time
setting.
0.0% to
100%
Allows the adjustment of the integration time of the overcurrent regulator. In the
event of needing more precision, this value has to be increased.
Note: When increasing this value too much, the system can get slower.
YES
9 Flux tune=2.0%
G19.3.9 / Flux
tuning
0.0% to
100%
Allows setting a greater starting torque in the device.
Note: Fault “F39 BLOCKED rotor” when giving the boot order means that the
device hasn‟t got enough torque for the load. The user will have to set a higher
value. Once this value has been set to its maximum, if the motor doesn‟t move it
will probably mean that the resistant torque is too high for the device, or there is a
mechanical problem.
SI