KEB COMBIVERT F4-C Applications Manual

7
ANTRIEBSTECHNIK
6
11 7
KEB COMBIVERT F4-C
Name: Basis
6
30.01.98
Functional DescriptionPI-Controller
© KEB Antriebstechnik, 1997
All Rights reserved
Chapter
Section
Page
Date
6.11.4 Set Value
Calculation %
f_out
±REF_int
REF_int
off
cn.12 Add. Set valuet/Source
Add. Set value /
cn.13 Function
cn.14 Maximum
cn15 PI-Controller
absolute
Set value setting
-100,0...100,0
+
+
PI-Controller
100%0%
cn.10
cn.11
0
1
2
3
The percental set value is effective with the setting cn.0 Bit1+2=“0…2“. It is adjusted
with cn.15. Adding to it one of three analog channels or the output frequency can be
selected with cn.13. The operating range of the output frequency is adjusted with
cn.10 and cn.11. With cn.13 and cn.14 the effect of the adding set value is determined.
If no adding set value is effective, cn.12 must be adjusted to „3“ and cn.14 to „0“.
Picture 6.11.4 PI-Controller percental set value calculation
PI-Controller
Absolute set value setting
(cn.15)
Adding set value
(cn.10...cn.14)
With parameters cn.10…cn.14 an additional set value can be deterimed for the PI-
Controller. This value acts adding to the absolute set value (cn.15).
If an adding set value is not desired, cn.12 must be adjusted to „3“ and cn.14 to
„0“.
Parameter cn.12 specifies the input from which the adding set value is supplied.
Following possiblities are selectable:
cn.12 Set value source
0 REF (standard)
1 ±REF
2 output frequency (f_out)
3 off
If one of the analog channels is adjusted, the signals can be individually adapted to
the requirements with the analog amplifier, as decribed in Chapter 6.2.
If the output frequency is adjusted as adding set value, the operating range of 0…100%
can be determined with cn.10 and cn.11 as follows:
cn.10, cn.11
As shown in the picture, it results in following connections:
Output frequency Adding set value
f_out < cn.10 0%
cn.10 < f_out < cn.11 (f_out - cn.10) x 100% / (cn.11-cn.10)
f_out > cn.11 100%
With cn.15 the set value of the PI-Controller is preset digitally in the range of
-100,0...100,0%. The parameter is set-programmable.

KEB COMBIVERT F4-C Specifications

General

Brand	KEB
Model	COMBIVERT F4-C
Category	DC Drives
Language	English