Programming the control
signal terminals
01/02 AWB8230-1415GB
98
Changeover from PI to P control (PPI)
When you activate the digital input configured as PPI, a change-
over from PI to P control takes place. The PI controller regulates
the motor speed in vector control mode. This changeover is useful,
for example, if you want to operate a dual-motor drive through
two DV6 frequency inverters.
The first frequency inverter is then operated with PI control and the
second with P control. The two frequency inverters are linked to
each other through the analog current inputs and outputs. The
frequency inverter with PI control outputs the current frequency
through terminals AMI-L to the OI-L terminals of the second
frequency inverter. The second frequency inverter works with P
control.
Figure 92: Drive with two motors and two frequency inverters
M1
PG1
G2PI
M2
Figure 93: Function chart for PI and P control
0
100 %
PPI
M
n
Figure 94: Controlling two motors with two frequency inverters
L1
L2
L3
PE
M
3
~
L1 L2 L3 PE AMI L
UP24FWVWPE
G1
M1
G2
M2
PES
PES
M
3
~
L1 L2 L3 PELOI
UFWVWPE
PES
PES
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