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

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Commissioning
Vector control
Switch-on sequence
15. Motor parameter identification (C0148)
A Ensure that the controller is inhibited
(terminal X3/28 = LOW)
B Set C0148 = 1
v
in addition
C Enable the controller
(terminal X3/28 = HIGH)
D If the segment becomes active after approx. 30 s,
inhibit must be activated.
(terminal X3/28 = LOW)
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)
44
z
w x
y
The motor makes a
high-pitched tone. The motor
does not rotate!
c
controller 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
E. g. JOG frequencies (C0037,
C0038, C0039), deceleration
time for quick stop (QSP)
(C0105) or motor temperature
monitoring (C0119)
E.g. via potentiometer at
terminals 7, 8, 9
d c
Πj g f k i h PS
‚ m n o
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
EDK82EV903 DE/EN/FR 1.0
Note
d c b e a
Œ
j g f k i h PS
‚ m n o
p
q r
Hi
Hz
Lo
Identification starts, the segment
Identification is completed.
Terminal X3/28 = HIGH
If the drive does not start, press
b e a
p
Hz
Note
Reduce C0092 by max. 20 %!
Overcompensation results in drive
instability!
controller (C0078):
c
is off.
u
in addition
L