Process Control Operation - GE AF-650 GP PROFINET Operating Instructions Manual

How to Control the Frequenc...
Depending on the setting of F-50 Reference Range the reference and MAV are scaled accordingly:
6 6
NOTE
If F-50 Reference Range is set to [0] Min - Max, a negative reference will be handled as 0%.
The actual output of the frequency converter is limited by the speed limit parameters in F-18 Motor Speed Low Limit [RPM] to
F-15 Motor Speed High Limit [Hz].
The final speed limit is set by F-03 Max Output Frequency 1.
The reference and the MAV have the format which appears
from the table
MRV / MAV
100%
75%
50%
25%
0%
-25%
-50%
-75%
-100%
NOTE
Negative numbers are formed as two's complement.
NOTE
The data type for MRV and MAV is a N2 16 bit standardised
value, meaning it can express a range from -200% to +200%
(8001 to 7FFF).
H-40 Configuration Mode set to [0] Speed open loop.
F-50 Reference Range set to [0] Min - Max.
F-52 Minimum Reference set to 100 RPM.
F-53 Maximum Reference set to 3000 RPM.
22
PROFINET Operating Instruction
Integer in hex Integer in decimal
4000 16.384
3000 12.288
2000 8.192
1000 4.096
0 0
F000 -4.096
E000 -8.192
D000 -12.288
C000 -16.384
MRV / MAV
0% 0 hex
25% 1000 hex
50% 2000 hex
75% 3000 hex
100% 4000 hex

6.2.4 Process Control Operation

In process control operation H-40 Configuration Mode is set
to [3] Process.
The reference range in F-50 Reference Range is alway [0] Min -
Max.
- MRV represents the process setpoint.
- MAV expresses the actual process feedback (range +/-
200%).
Actual Speed
100 RPM
825 RPM
1550 RPM
2275 RPM
3000 RPM