6
5
KEB COMBIVERT F4-F
4
Name: Basis
11.05.99
Chapter
Section
Page
Date
©
KEB Antriebstechnik, 1999
All Rights reserved
Functional Description
Motor Data and Controller Adjustment
6.5.3
Motor Adaption
(Fr.10)
After entering the name plate specifications of a new motor parameter Fr.10 should
be activated once (inverter must be in status nOP). This creates a default setting for
a number of control parameters which is sufficient for many applications. This
adjustment depends on inverter identification data (like e.g. rated inverter current)
and motor identification data (like e.g. motor rating and rated motor current).
Parameters which are changed through the activation of Fr.10:
• dr.13 Speed for maximum torque
• dr.16 Maximum torque corner speed
• dr.19 Corner speed field weakening
• dr.20 Field weakening curve
• dr.21 Flux adaption factor
• dS.0 KP I active
• dS.1 KI I active
• dS.5 KP I magnetizing
• dS.6 KI I magnetizing
• CS.6/CS.7/CS.8/CS.9 torque limits
On the basis of these settings a fine adustment can be carried out, e.g. an increase
of the torque limits or a change of the field weakening time.
Control of the optimized settings: Over the entire speed range the modulation factor
should not exceed approx. 90 .. 95 % (depending on the expected system fluctuations
and temperature changes). However, the output voltage at the rated point should not
be too low (e.g. modulation factor at rated speed and rated load < 70 %), since such
a setting would result in a motor current that is too high.
Procedure:
1.
Open control release (status nOP)
2.
Enter motor name plate data in the corresponding parameters (dr.0...12).
3.
Adjust Fr.10 = 1 or Fr.10 = 2
⇒
the corresponding dr/dS parameters are loaded
with the default-parameters.
4.
If necessary, carry out a fine adjustment on the basis of these settings.
Value
Meaning
1
Pre-adjustment of the motor-dependent control-parameters
The adjusted voltage stabilization value or the voltage class of the
inverter is taken as input voltage.
2
Pre-adjustment of the motor-dependent control-parameters
The DC-link voltage /
√
2 measured at switch on is taken as input voltage.
The pre-adjustments made at value 1 or 2 refer to the same parameters.
For Fr.10=2 the inverter measures automatically the input voltage which is required
as reference value for the calculation. This is especially important for the CP-mode,
since the value for the voltage stabilization cannot be adjusted, consequently an
adaption to e.g. 460V-systems would not be possible.
The adaption does not take place automatically at every switch on, it is done only
once at the tripping of Fr.10 because otherwise possible fine adjustment would be
overwritten.