Chapter 2 -
2.6.3Field weakening control with setting range > 1 : 1.5
CAUTION: Not permitted when Chapter 2.5 was quit with e.m.f. control!
Only when unit is fitted with an
If the field time constant is known, e.g. from the motor data sheet!
1308 = leave as it is; if appropriate vary between 1...5.
1309 = Enter value of field time constant, if necessary increase by factor 1...2.
If possible, check controller behaviour with oscilloscope or CMT tool
11202 = SAVE MOT1 SET
Save the altered values in the
If the field time constant is not known!
1201 = 7 Panel display: FEXC2/3 MAN. TUNIN Drive Mode: manual balancing of the field current controller
1204 = 4095
1205 = 1000
Ref. value jumps of field current between 25 % and 100 % with POT1 and POT2
11209 = 3
Change between POT1 and POT2 activated
12516 = 0
Switch ON power.
DANGER: System components now energized!
1308 = Match
1309 = Match
Oscillograph field current feedback via D/A output, or if one is to hand, use CMT tool to depict it via the TRENDING menu and Parameter 11302.
B
CD E F
A
t
Fig.: Transient response of controller
A:reference value jump
B:undercompensated; reset time and
C:undercompensated;
D:normal
E:slightly overcompensated; when a higher dynamic response is required
F:overcompensated; short reset time and a high
IV A 2 - 16 | DCS 500B / DCP 500B Operating Instructions |
3ADW000055R0401_DCS500B_Operating Instruction_e_d