
WEG Electric Corp.
WEG Automation Technical Note: CFW300
Page: 3 / 4
WEG Electric Corp. – Integrated Solutions Center
6655 Sugarloaf Parkway, Duluth, GA 30097 – www.weg.net/us
The following steps will set up the “REMOTE” operation of the VFD (potentiometer or analog
voltage/milliamp signal for the speed source thru the CFW300’s Analog Connections,as well as
Run/Stopand Direction thru theVFD’sDigital Inputs).
1. Scroll UP/DOWN toparameter P220,"LOC/REM Source Selection". Press "P",scroll UP/DOWN
to find 1, "Always Remote". Press "P" to accept the value.
2. ScrollUP/DOWN to parameter P222, "REM Reference Selection". Press "P". Scroll
UP/DOWN to 1, "AI1" (Analog Input 1). Press "P" to accept the value.
3. For speed reference from potentiometer, the VFD will provide 10VDC. Connect the outside
wires (POT reference connections) to terminals (-)7 and (+)9, and the center wire (POT wiper
input) to terminal 8.
4. Scroll UP/DOWN toparameter P231,"AI1 Signal Function".Press "P",scroll UP/DOWN to find 0,
"Speed Reference". Press "P" to accept the value.
5. Scroll UP/DOWN to parameter P233, "AI1 Input Signal". Press "P", scroll UP/DOWN to find 0, "0
to 10V/20 mA". Press "P" to accept the value.
6. To verify the AI1 signal “polarity” is correct, scroll UP/DOWN to parameter P207, "Bar Graph
Parameter". Scroll UP/DOWN to "18". Press "P" to accept the value (this value refers to P018,
which is the AI 1 value). This will verify the signal connections are correct using the bar graph on
the display. Wire connection signal will display as they are connected on the bar graph at the
very bottom of the display. Scroll UP/DOWN and if the POT signal displays in reverse of the
UP/DOWN arrows, then swap wires on terminals 7 and 9.