Danfoss VLT AutomationDrive FC 300 Programming Manual page 55

Parameter Descriptions
1-98 ATEX ETR interpol. points
freq.
[0] = 5 Hz
[1] = 15 Hz
[2] = 25 Hz
[3] = 50 Hz
All operating points underneath the curve are allowed
continuously. Above the line, however, only for a limited
time calculated as a function of the overload. In the event
of a machine current greater than 1.5 times the rated
current, shut down is immediate.
1-99 ATEX ETR interpol points current
FC 302 only.
Only visible if 1-90 Motor Thermal Protection is set to [20] or [21].
Range: Function:
Size related [0 - 100 %] Definition of thermal limitation curve.
*
For example, see 1-98 ATEX ETR
interpol. points freq.
Use the four current points [A] from the motor name plate.
Calculate the values as percentage of nominal motor
current, I /I x 100 [%], and enter into this array.
m m,n
Together with 1-98 ATEX ETR interpol. points freq., these
make up a table (f [Hz],I [%]).
NOTE
All frequency/current limit points from the motor name
plate or motor data sheet must be programmed.
3.3.12 PM Settings
If [2] Std. PM, non salient is selected in 1-10 Motor
Construction, enter the motor parameters manually, in the
following order:
1. 1-24 Motor Current
2. 1-26 Motor Cont. Rated Torque
3. 1-25 Motor Nominal Speed
4. 1-39 Motor Poles
5. 1-30 Stator Resistance (Rs)
6. 1-37 d-axis Inductance (Ld)
7. 1-40 Back EMF at 1000 RPM
The following parameters have been added for PM motors.
1-41 Motor Angle Offset
1-07 Motor Angle Offset Adjust
1-14 Damping Gain
1-47 Low Speed Torque Calibration
®
VLT AutomationDrive Programming Guide
1-99 ATEX ETR interpol
points current
[0] = 40%
[1] = 80%
[2] = 100%
[3] = 100%
®
MG33MG02 - VLT is a registered Danfoss trademark
1-58 Flystart Test Pulses Current
1-59 Flystart Test Pulses Frequency
1-70 PM Start Mode
30-20 High Starting Torque Time [s]
30-21 High Starting Torque Current [%]
NOTE
Standard parameters still need configuration (e.g. 4-19 Max
Output Frequency etc.).
Application Settings
Low inertia applications 1-17 Voltage filter time const. to be
I /I <5 increased by factor 5 to 10
Load Motor
1-14 Damping Gain should be
reduced
1-66 Min. Current at Low Speed
should be reduced (<100%)
Low inertia applications Keep calculated values
50>I /I >5
Load Motor
High inertia applications 1-14 Damping Gain, 1-15 Low Speed
I /I > 50 Filter Time Const. and 1-16 High
Load Motor
Speed Filter Time Const. should be
increased
High load at low speed 1-17 Voltage filter time const. should
<30% (rated speed) be increased
1-66 Min. Current at Low Speed
should be increased (>100% for
longer time can overheat the motor)
Table 3.9 Recommendations for VVC
If the motor starts oscillating at a certain speed, increase
1-14 Damping Gain. Increase the value in small steps.
Depending on the motor, a good value for this parameter
can be 10% or 100% higher than the default value.
Adjust starting torque in 1-66 Min. Current at Low Speed.
100% provides nominal torque as starting torque.
plus
Applications
53
3 3