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8 oscillation damping, 9 load change damping – Lenze 8615E User Manual

Page 98

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96

Rated motor power
By entering the rated motor power (C081), the flying restart circuit
is adapted to the motor. If the rated motor power is programmed
correctly, the obtainable flying restart accuracy shows the best
results.

Code

Parameter

Meaning

Acceptance

C081*

-4-
-5-
-6-
-7-
-8-
-9-
-10-
-11-
-12-
-13-
-14-
-15-
-16-
-17-
-18-
-19-
-20-
-21-
-22-
-23-
-24-

0.25kW
0.37kW
0.55kW
0.75kW
1.1kW
1.50kW
2.20kW
3.0kW
4.0kW
5.5kW
7.5kW
11.0kW
15.0kW
18.5kW
22.0kW
30.0kW
37.0kW
45.0kW
55.0kW
75.0kW
90.0kW

SH + PRG

* extended code set

6.8

Oscillation damping

Motors which are not adapted to the inverter output power, may
oscillate in speed with idle running. If you increase the value under
C079, the oscillation is damped. With high chopping frequencies,
the motor noise may increase.

Code

Parameter

Meaning

Acceptance

C079*

2.0
2.0...5.0

Oscillation damping

ON-LINE

*

extended code set

6.9

Load change damping

If the load frequently changes and if energy is repeatedly absorbed
by the DC bus of the inverter (e.g. cyclic lifting and lowering of a
load), the inverter is able to damp the increase of the DC bus
voltage. The absorbed energy is reduced so that a brake chopper
may not be necessary. You can set the damping under C234.

Code

Parameter

Meaning

Acceptance

C234*

0.25
0.00...5.00

Load-change damping

ON-LINE

*

extended code set

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