Lenze 931K - Manual (Page 81)

Parameter setting
Speed controller
Overview
7
l
81 KHB 13.0002−EN 4.1
7.5 Speed controller
7.5.1 Overview
The parameter set of the drive controller has to be adapted to the application. Especially
the gain strongly depends on masses which may be coupled to the motor. At the
commissioning of the system, the data has to be optimised by means of the Small Drive
Control program.
(
Stop!
Uncontrolled vibrations
Incorrect settings of the speed controller parameters can cause heavy
vibrations.
Possible consequences:
ƒ Parts of the system may be damaged.
Protective measures:
ƒ Before switching on the drive controller, ensure that the speed controller
parameters are correctly set.
7.5.2 Description of the objects
Index Name Possible settings Characteristics
Lenze Selection Description
60F9
h
0 velocity_control_
parameter_set
REC UINT8 RO Ċ
Reading−out of the speed
controller data.
1 velocity_control_
gain
179 26 {1} 64 × 256 Ċ UINT16 RW MAP
Setting of the speed
controller gain.
From the SDC program:
K
p
= 0.7
Setting here:
0.7 × 256 = 179
2 velocity_control_
time
8000 200 {1 ms} 32000 Ċ UINT16 RW MAP
Setting of the speed
controller time constant.
From the SDC program:
T
n
= 8 ms
Setting here: 8 ms = 8000 ms
4 velocity_control_
filter_time
1600 200 {1 ms} 32000 Ċ UINT16 RW MAP
Setting of the filter time
constant for the actual speed
value.
The filter serves to reduce the
measurement noise.
From the SDC program:
T = 1.6 ms
Setting here:
1.6 ms = 1600
ms