ABB DCS550 - Page 217

217
Signal and parameter list
3ADW000379R0501 DCS550 Manual e e
Signal / Parameter name
min.
max.
def.
unit
30.17 SpeedFbFltSel (speed feedback fault selector)
SpeedFbFltSel (30.17)
determines the reaction to a speed feedback problem:
0 =
NotUsed
1 =
Fault the drive trips according to SpeedFbFltMode (30.36) and sets F522 SpeedFb
[FaultWord2 (9.02) bit 5], default
2 =
EMF/Fault The speed feedback is switched to EMF, the drive stops according to E StopRamp
(22.11) and sets F522 SpeedFb [FaultWord2 (9.02) bit 5]. In case speed actual is
greater than base speed the drive trips according to SpeedFbFltMode (30.36) and sets
F522 SpeedFb [FaultWord2 (9.02) bit 5].
3 =
EMF/Alarm The speed feedback is switched to EMF and A125 SpeedFb [AlarmWord2 (9.07)
bit 8] is
set. In case speed actual is greater than base speed the drive trips according to
SpeedFbFltMode (30.36) and sets F522 SpeedFb [FaultWord2 (9.02) bit 5].
Int. Scaling: 1 == 1 Type: C Volatile: N
NotUsed
EMF/Alarm
Fault
-
30.18 CurRippleSel (current ripple selector)
CurRippleSel (30.18)
determines the reaction when CurRippleLim (30.19) is reached:
0 =
NotUsed
1 =
Fault the drive trips with F517 ArmCurRipple [FaultWord2 (9.02) bit 0], default
2 =
Alarm A117 ArmCurRipple [AlarmWord2 (9.07) bit 0] is set
Note:
The current ripple function detects:
−
a broken fuse, thyristor or current transformer (T51, T52)
−
too high gain of the current controller
Int. Scaling: 1 == 1 Type: C Volatile: N
NotUsed
Alarm
Fault
-
30.19 CurRippleLim (current ripple limit)
Threshold for
CurRippleSel (30.18), in percent of M1NomCur (99.03). Typical values when a thyristor is
missing:
−
armature about 300 %
−
high inductive loads (e.g. excitation) about 90 %
Int. Scaling: 100 == 1 % Type: I Volatile: N
0
650
150
%
30.20 Unused