Lenze 8200 vector Instructions De Montage page 171

Switch−on sequence
16. Start the motor parameter identification (C0148)
A Ensure that the controller is inhibited
B Set C0148 = 1
C Enable the controller
If segment c becomes active again after approx. 30 s, inhibit
D
controller again.
17. If necessary, select more parameters
When all settings are complete:
18. Select setpoint
19. Enable the controller
20. The drive is now running.
Optimising the vector control
In general, the vector control is ready for operation without any further measures after the
motor parameters have been identified. The vector control must only be optimised in the
case of the following drive behaviour:
Drive behaviour
Rough motor run and motor current (C0054) > 60 %
rated motor current in idle running (steady−state
operation)
Torque too low for frequencies f < 5 Hz (starting
torque)
Poor speed stability at high load (setpoint and motor
speed are no longer proportional)
Error messages OC1, OC3, OC4 or OC5 at acceleration
times (C0012) < 1 s (controller is no longer able to
follow the dynamic processes)
EDK82EV903 DE/EN/FR 5.1
Commissioning
Parameter setting with E82ZBC keypad
Comment
Only when the motor is cold!
Terminal X3/28 = LOW
Pressv
l
Terminal X3/28 = HIGH
l
The identification starts:
– Segment c is off
– The motor consumes current and makes a
high−pitched" tone.
– The motor does not rotate!
l Terminal X3/28 = LOW
l Identification is completed.
l
Calculated and stored:
– V/f rated frequency (C0015)
– Slip compensation (C0021)
– Motor stator inductance (C0092)
l
Measured and stored:
– Motor stator resistance (C0084) = Total
resistance of motor cable and motor
Activate e.g. JOG frequencies (C0037, C0038, C0039)
or motor temperature monitoring (C0119)
E.g. via potentiometer at terminals 7, 8, 9
Terminal X3/28 = HIGH
If the drive does not start, additionally press u
Remedy
1. Reduce motor stator inductance (C0092) by 10 %
2. Check motor current in C0054
3. If the motor current (C0054) is > 50 % of the rated
motor current:
– Reduce C0092 until the motor current is
approx. 50 % of the rated motor current
– Reduce C0092 by max. 20 %!
– Note: If you reduce C0092, the torque will
decrease!
Increase motor resistance (C0084) or motor inductance
(C0092)
Increase slip compensation (C0021)
Overcompensation results in drive instability!
Change reset time of the I
l Reduce C0078 = I
(more dynamic)
l
Increase C0078 = I
("smoother")
l
Vector control
controller (C0078):
max
controller becomes faster
max
controller becomes slower
max
7
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