KEB COMBIVERT F4-S/1.2, Applications Manual, Page: 31 / 96

Pn - Parameter
31
ANTRIEBSTECHNIK
Pn.7 allows the inverter to switch onto a motor slowing down. After the function is
activated, it searches the actual motor speed and fits the output frequency accordingly.
If the synchronization point is found, then the inverter accelerates the drive with the
adjusted ACC ramp onto the setpoint. The conditions, when the functions should
become active, can be selected by parameter Pn. 7.
Bit - No. Decimal Value Speed Search by
0 1 Control release
1 2 Power on reset
2 4 Reset
3 8 Automat. restart
In case several conditions should be activated, then the sum of the decimal values
must be adjusted.
no
no
yes
yes
no
yes
yes
no
yes
no
yes
yes
no
no
15
End
Speed-
Search
votlage-
calculation
17
store SSF-frequency and SSF-voltage factor
blend in SSF-dir. of rotation
output frequency = +/- SSF-frequency
16
end Speed-Search
erase flags for Speed-Search-function
14
SSF-voltage factor > 100 % ?
13
increase SSF-voltage
12
SSF-Frequency = uF. 9
11
SSF-frequency < uF. 9 ?
10
decrease SSF-frequency
9
Rate of utiliz. > 80 % ?
8
SSF-frequency and
load SSF-voltage factor
7
Start Speed-Search:
Set flag 'Speed-Search active'
SSF-dir. of rot. = set dir. of rotation
SSF-frequency = | set frequency |
SSF-voltage factor = 0
6
Speed-Search-dir. of rotation
= set dir. of rotation ?
5
Is a selected condition
(Pn. 7) met ?
4
Speed-Search active ?
3
Set dir. of rot. = LS ?
2
1
Start
Speed-
Search
Speed Search
Condition (Pn. 7)
Speed Search
Condition
Flow Chart