GE AF-650 GP Programming Manual page 56

Parameter Descriptions
C-34 Frequency Command 3
Option: Function:
up to three different reference
signals. The sum of these reference
signals defines the actual reference.
[0] No function
[1] Analog Input 53
[2] Analog Input 54
[7] Frequency input 29
[8] Frequency input 33
[11] Local bus reference
*
[20] Digital Potentiometer
[21] Analog input X30-11
[22] Analog input X30-12
[29] Analog Input X48/2
AF-650 GP Programming Guide
DET-618C
3 3
55