Firmware Manual

Chapter 6—Multi-Pump and Fan Control Application
PowerXL DG1 Series Adjustable Frequency Drives MN040004EN—March 2014 www.eaton.com 50
Figure 33. Example of the Function of the PFC Application with Three Auxiliary Drives
Interlock 4
Interlock 3
Interlock 2
Interlock 1
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
Max. Frequency
Aux. 3 Running
Aux. 2 Running
Aux. 1 Running
Main Drive Running
Min. Frequency
f
t
Aux. 1, 2 and 3
Start Frequency
Aux. 1, 2 and 3
Stop Frequency
100%
Main
Drive
Aux. Drive 2
Aux. Drive 3
Aux. Drive 1
M.
D.
Aux.
Drive
2
1
1
3
246 8
57
2
4
8
5
Interlocks
Relay
Control
Main Drive
Output
Frequency
PID Output