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15
ANTRIEBSTECHNIK
6
11
15
KEB COMBIVERT F4-F
Name: Basis
17.06.99
6
Section
Page
Date
©
KEB Antriebstechnik, 1999
All Rights reserved
Chapter
Functional Description
Positioning Module
KEB-Antriebstechnik (R) COMBIVIS (R) Inverter scope
CH A:Inv 1 ru01 Istdrehzahl
1000rpm/DIV Ypos: 0rpm
CH B:Inv 1 ru04 Solldrehzahl
1000rpm/DIV Ypos: 0rpm
CH C:Inv 1 ru02 Istmoment
4.1Nm/DIV
Ypos: 0Nm
CH D:Inv 1 ru27 Winkelabweichung
360x/DIV
Ypos: 0x
CU I : Off
CU II: Off
MEM:(1604/4000)
0ms - 4000ms
A
B
C
D
6.11.17 Adjustment of
Position
Controller and
Drive Profile
At large mass moments of inertia unwanted effects often occur during positioning;
following a short instruction for the parameterizing.
• Carry out the speed controller setting as usual (CS-Par.)
• Activate the positoining module and record the positioning process with
the inverter-scope.
The following example was recorded with a COMBIVERT S4, but it also corresponds
to a COMBIVERT F4-F:
Fig. 6.11.16
Recording of a drive profile
This recording shows that the drive cannot follow the setpoint. At the acceleration
along the torque limit the angular displacement increases. The drive compensates
the phase-angle error by catching up until zero. At this it is important that the maximum
speed (SP.8/SP.9) is adjusted larger than Pd.3 + Pd.7.
During deceleration the drive cannot follow the precontrol profile. It comes to an
overshoot. Subsequently the drive is put back into its setpoint position with the speed
adjusted in Pd.3. In this example the overshoot (angular displacement) amounts to
3.5 motor revolutions.
To accelerate up to the maximum speed the drive requires approx. 300 ms in this
example. For our second test we adjust this value now for as acceleration time Pd.6.
D
B
C
A
KEB-Antriebstechnik (R) COMBIVIS (R) Inverter scope
CH A:Inv 1 ru01 Actual speed
1000rpm/DIV
Ypos: 0rpm
CH B:Inv 1 ru04 Setpoint speed
1000rpm/DIV
Ypos: 0rpm
CH C:Inv 1 ru02 Actual torque
4.1Nm/DIV
Ypos: 0Nm
CH D:Inv 1 ru27 Angular displacement
360x/DIV
Ypos: 0x
CU I : Off
CU II: Off