Vector Control Optimisation - Lenze Global Drive 8200 vector Instructions De Montage

Commissioning
Vector control
Switch-on sequence
15. Start the motor paramter identification (C0148)
A Ensure that the controller is inhibited
B Set C0148 = 1
C Enable the controller.
D If the segment becomes active after approx. 30 s,
controller once again
16. If necessary, adjust more parameters
After parameter setting:
17. Setpoint selection
18. Enable the controller.
19. The drive should now be running at e.g. 30 Hz
8.5.1

Vector control optimisation

The vector control is usually ready for operation after the motor parameter identification. Vector
control must only be optimised for the following drive performance:
Drive response
Rough motor run and motor current (C0054) > 60 %
rated motor current in idle running (stationary
operation)
Torque too low for frequencies f < 5 Hz (starting
torque)
Poor constant speed at high loads (setpoint and
motor speed are not proportional).
Error messages OC1, OC3, OC4 or OC5 for
acceleration times (C0012) < 1 s (controller can no
longer follow the dynamic processes)
100
EDK82EV903 DE/EN/FR 2.2
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z
w x
y
}
Press  in addition
X3
20
}
 inhibit the
Activate e. g. JOG frequencies
(JOG) (C0037, C0038, C0039 or
motor parameter monitoring
(C0119)
E.g. via potentiometer at
terminals 7, 8, 9
X3
20
d c
Πj g f k i h PS
‚ m n o
3 000
q r
Hi
Lo
Remedy
1. Reduction of motor inductance (C0092) by 10 %
2. Check of motor current under C0054
3. If the motor current is (C0054) > approx. 50 % of the rated motor
current, reduce C0092 until approx. 50 % rated motor current is
reached.
Increase of motor resistance (C0084) or increase of motor inductance
(C0092)
Increase of slip compensation (C0021)
Change readjustment time of the I
max
•
Reduction of C0078 = I controller becomes quicker (more
max
dynamic)
•
Increase of C0078 = I controller becomes slower ("smoother")
max
Note
Only when the motor is cold!
d c b e a
1
Œ
j g f k i h PS
01 48
000
‚ m n o
p
q r 0
Hi
Lo
Terminal X3/28 = LOW
X3
20 28
misc001
•
Terminal X3/28 = HIGH
28
•
The identification starts:
misc002
– The segment
– The motor makes a high-pitched tone. The
motor does not rotate!
•
Terminal X3/28 = LOW
X3
•
20 28 Identification is completed.
misc001
•
Calculated and stored:
– V/f rated frequency (C0015)
– Slip compensation (C0021)
– Motor stator inductance (C0092)
•
Measured and stored:
– Motor stator resistance (C0084) = Total
resistance of motor cable and motor
Terminal X3/28 = HIGH
28
misc002
If the drive does not start, press
b e a
1
0050
000
p
Hz
Note
Reduce C0092 by max. 20 %!
Overcompensation results in drive
instability!
controller (C0078):

Off
 in addition
L