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Parameter 1-98 ATEX ETR interpol.
points freq.
Parameter 1-99 ATEX ETR
interpol points current
[0]=5 Hz
[0]=40%
[1]=15 Hz
[1]=80%
[2]=25 Hz
[2]=100%
[3]=50 Hz
[3]=100%
Table 3.10 Interpolation Points
All operating points underneath the curve are allowed
continuously. Above the line, however, these are only
allowed 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, shutdown is immediate.
1-99 ATEX ETR interpol points current
Only visible if
parameter 1-90 Motor Thermal Protection
is set to
[20] or [21].
Range:
Function:
Size related
*
[0 - 100 %]
NOTICE
Valid for FC 302 only.
Definition of thermal limitation curve.
For example, see
parameter 1-98 ATEX
ETR interpol. points freq.
Use the 4 current points [A] from the motor nameplate.
Calculate the values as percentage of nominal motor
current, I
m
/I
m,n
x 100 [%], and enter into this array.
Together with
parameter 1-98 ATEX ETR interpol. points freq.
,
these constitute a table (f [Hz],I [%]).
NOTICE
All frequency/current limit points from the motor
nameplate or motor datasheet must be programmed.
3.2.19 PM Settings
If
[2] Std. PM, non-salient
is selected in
parameter 1-10 Motor Construction
, enter the motor
parameters manually in the following order:
1.
Parameter 1-24 Motor Current
.
2.
Parameter 1-26 Motor Cont. Rated Torque
.
3.
Parameter 1-25 Motor Nominal Speed
.
4.
Parameter 1-39 Motor Poles
.
5.
Parameter 1-30 Stator Resistance (Rs)
.
6.
Parameter 1-37 d-axis Inductance (Ld)
.
7.
Parameter 1-40 Back EMF at 1000 RPM
.
The following parameters have been added for PM motors.
1.
Parameter 1-41 Motor Angle Offset
.
2.
Parameter 1-07 Motor Angle Offset Adjust
.
3.
Parameter 1-14 Damping Gain
.
4.
Parameter 1-47 Torque Calibration
.
5.
Parameter 1-58 Flying Start Test Pulses Current
.
6.
Parameter 1-59 Flying Start Test Pulses Frequency
.
7.
Parameter 1-70 Start Mode
.
8.
Parameter 30-20 High Starting Torque Time [s]
.
9.
Parameter 30-21 High Starting Torque Current [%]
.
NOTICE
Standard parameters still need configuration (for
example
parameter 4-19 Max Output Frequency
).
Application
Settings
Low inertia applications
I
Load
/I
Motor
<5
Increase
parameter 1-17 Voltage filter
time const.
by factor 5–10.
Reduce
parameter 1-14 Damping
Gain
.
Reduce
parameter 1-66 Min. Current
at Low Speed
(<100%).
Low inertia applications
50>I
Load
/I
Motor
>5
Keep calculated values.
High inertia applications
I
Load
/I
Motor
> 50
Increase
parameter 1-14 Damping
Gain
,
parameter 1-15 Low Speed Filter
Time Const.
, and
parameter 1-16 High
Speed Filter Time Const.
High load at low speed
<30% (rated speed)
Increase
parameter 1-17 Voltage filter
time const.
Increase
parameter 1-66 Min. Current
at Low Speed
(>100% for longer time
can overheat the motor).
Table 3.11 Recommendations for VVC
+
Applications
If the motor starts oscillating at a certain speed, increase
parameter 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
parameter 1-66 Min. Current at Low
Speed
. 100% provides nominal torque as starting torque.
Parameter Descriptions
Programming Guide
MG33MP02
Danfoss A/S © 10/2018 All rights reserved.
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