230
Signal and parameter list
3ADW000379R0501 DCS550 Manual e e
Signal / Parameter name
m
in.
ma
x.
def
.
uni
t
45.02 M1PosLimCtrl (positive voltage limit for field exciter)
Positive voltage limit for the field exciter in percent of the maximum field exciter output voltage.
Example:
With a 3-phase supply voltage of 400 V
AC
the field current controller can generate a maximum output voltage
of 521 V
DC
. In case the rated field supply voltage is 200 V
DC
, then it is possible to limit the controller’s output
voltage to 46 %. That means the firing angle of the field current controller is limited in such a way that the
average output voltage is limited to a maximum of 230V
DC
.
Int. Scaling: 100 = 1 %
Type: I
Volatile:
N
0
100
100
%
45.03 - 45.17 Unused
45.18 FldMinTripDly (delay field current minimum trip)
FldMinTripDly (45.18) delays F541 M1FexLowCur [FaultWord3 (9.03) bit 8]. If the field current recovers
before the delay is elapsed F541 will be disregarded:
−
M1FldMinTrip (30.12)
Int. Scaling: 1 == 1 ms
Type: I
Volatile:
N
50
10000
2000
ms
Group 50: Speed measurement
50.01 M1SpeedScale (speed scaling)
Speed scaling in rpm. M1SpeedScale (50.01) defines the speed - in rpm - that corresponds to 20,000 internal
speed units. The speed scaling is released when M1SpeedScale (50.01)
≥
10:
−
20,000 speed units == M1SpeedScale (50.01), in case M1SpeedScale (50.01)
≥
10
−
20,000 speed units == maximum absolute value of M1SpeedMin (20.01) and M1SpeedMax (20.02), in
case M1SpeedScale (50.01) < 10
Mathematically speaking:
If (50.01)
≥
10 then 20,000 == (50.01) in rpm
If (50.01) < 10 then 20,000 == Max [|(20.01)|, |(20.02)|] in rpm
The actual used speed scaling is visible in SpeedScale Act (2.29).
Notes:
−
M1SpeedScale (50.01) has to be set in case the speed is read or written by means of an overriding control
via fieldbus.
−
M1SpeedScale (50.01) is must be set in the range of:
0.625 to 5 times of M1BaseSpeed (99.04), because the maximum amount of speed units is 32,000.
If the scaling is out of range A124 SpeedScale [AlarmWord2 (9.07) bit 7] is generated.
Commissioning hint:
−
Set M1SpeedScale (50.01) to maximum speed
−
Set M1BaseSpeed (99.04) to base speed
−
Set M1SpeedMax (20.02) / M1SpeedMin (20.01) to
±
maximum speed
Int. Scaling: 10 == 1 rpm Type: I
Volatile:
N
0
6500
0
rp
m
50.02 Unused
Summary of Contents for DCS550 Series
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