Emerson FXMP25 - Page 36

36 FXMP25 User Guide
www.controltechniques.com Issue Number: 3
Flux feedback after the current to flux converter, see motor saturation breakpoints in
Table 6-1 Quick look-up parameter table on page 30.
When in current mode the flux demand from the field weakening voltage loop, subject to
the limits of Pr 68 and Pr 69. When in voltage mode [Pr 75 = On (1)] the voltage demand
is subject to the limits of Pr 68 and Pr 69.
The current feedback in amps.
Indicates percentage voltage demand. Negative value in full control indicates energy
absorption to force field down quicker.
0 ° = fully phased forward full volts applied to the field.
54 Flux feedback
Coding
Bit FI Txt VM DP ND US RW BU PS
111
Range ±150.0 %
Update rate Background write
55 Flux / voltage demand
Coding
Bit FI Txt VM DP ND US RW BU PS
111
Range ±120.0 %
Update rate Mains period / 6 ms
56 Field current feedback
Coding
Bit FI Txt VM DP ND US RW BU PS
121
Range ±25.00 A
Update rate Background write
57 Percentage voltage demand
Coding
Bit FI Txt VM DP ND US RW BU PS
111
Range
±150.0 % (0 to150 % in half control mode)
Update rate Background write
58 Field firing angle
Coding
Bit FI Txt VM DP ND US RW BU PS
111
Range
0.0 to 180.0
°
Update rate Background write