GE Industrial Solutions AF-600 FP Profibus DP User Manual
Page 25
Depending on the setting of par. F-50 Reference Range the reference and MAV are scaled accordingly:
NB!
If par. 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 Motor Low/High Speed Limit [RPM/Hz] in par. F-18 Motor Speed Low Limit
[RPM] to par. F-15 Motor Speed High Limit [Hz].
The final speed limit is set by par. F-03 Max Output Frequency 1.
The reference and the MAV have the format which appears from the table
MRV / MAV
Integer in hex
Integer in decimal
100%
4000
16.384
75%
3000
12.288
50%
2000
8.192
25%
1000
4.096
0%
0
0
-25%
F000
-4.096
-50%
E000
-8.192
-75%
D000
-12.288
-100%
C000
-16.384
NB!
Negative numbers are formed as two's complement.
NB!
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).
AF-650 GP/AF-600 FP Profibus DP Operating Instructions
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