6
6
6
7
KEB COMBIVERT F5-M / S
Name: Basis
12.05.04
Section
Page
Date
©
KEB Antriebstechnik, 2002
All Rights reserved
Chapter
Functional Desription
Motor Data and Controller
The parameters cS.20 and cS.22 define the torque limits.The value ÑoFFì deaktivates
the particular limit. In this case the motoric value is valid. If this value is switched
off too, the preadjusted torque limit in cS.20 is valid for all operating ranges. If
cS.20 is also switched off the value of cS.19 works as limit (especially for CP-
mode).
Torque limit forward motoric
(cS.20)
Torque limit reverse motoric
(cS.21)
Torque limit forward generatoric
(cS.22)
Torque limit reverse generatoric
(cS.23)
Fig. 6.6.4
Torque limits
6.6.4 Torque Limitation
The maximum torque is limited by 2 further factors:
ï If the KEB COMBIVERT is dimensioned too small to operate the current
that is necessary for the required torque, then the maximum torque is limited
automatically.
ï From the motor parameters a speed-dependent torque characteristic is
calculated.
Torque
Controller
manipulated
variable
Adjustable limits
The torque limits can be modified for special applications in the operation. For that
a source is defined with the parameter cS.15. The defined limits cS.20/cS.22 are
changed with the adjusted torque setpoint source cS.15.
Value Source
0
REF 0...100 %
1
AUX 0...100 %
2
Direct setting with cS.19/20/22 (default)
3
Adjustment in percent with cS.18 0...100 %
4
Motorpoti 0...100 %
5
External PID output 0...100 %
The torque limits ru.47 / 48 are calculated as follows:
eingestellter Prozentwert
ru.47 = M
mot
= cS.20 x
100%
eingestellter Prozentwert
ru.48 = M
gen
= cS.22 x
100%
Torque reference source (cS.15)
cS.20
cS.21
cS.23
cS.22