Lenze E82EV 8200 vector 15kW-90kW - Manual (Page 171)

Commissioning
Parameter setting with E82ZBC keypad
Vector control
7
l
171 EDK82EV903 DE/EN/FR 5.1
Comment Switch−on sequence
16. Start the motor parameter identification (C0148) Only when the motor is cold!
A Ensure that the controller is inhibited Terminal X3/28 = LOW
B Set C0148 = 1 Press v
C Enable the controller 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!
D If segment c becomes active again after approx. 30 s, inhibit
controller again.
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
17. If necessary, select more parameters Activate e.g. JOG frequencies (C0037, C0038, C0039)
or motor temperature monitoring (C0119)
When all settings are complete:
18. Select setpoint E.g. via potentiometer at terminals 7, 8, 9
19. Enable the controller Terminal X3/28 = HIGH
20. The drive is now running. If the drive does not start, additionally press u
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 Remedy
Rough motor run and motor current (C0054) > 60 %
rated motor current in idle running (steady−state
operation) 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!
Torque too low for frequencies f < 5 Hz (starting
torque) Increase motor resistance (C0084) or motor inductance
(C0092)
Poor speed stability at high load (setpoint and motor
speed are no longer proportional) Increase slip compensation (C0021)
Overcompensation results in drive instability!
Error messages OC1, OC3, OC4 or OC5 at acceleration
times (C0012) < 1 s (controller is no longer able to
follow the dynamic processes) Change reset time of the I
max
controller (C0078):
l Reduce C0078 = I
max
controller becomes faster
(more dynamic)
l Increase C0078 = I
max
controller becomes slower
("smoother")