ABB DCS550 - Page 232

232
Signal and parameter list
3ADW000379R0501 DCS550 Manual e e
Signal / Parameter name
min.
max.
def.
unit
50.06 SpeedFiltTime (actual speed filter time)
Speed actual filter time for
MotSpeed (1.04). There are three different filters for actual speed and speed error
(
∆n):
−
SpeedFiltTime (50.06) is filtering the actual speed and should be used for filter times smaller than 30 ms.
−
SpeedErrFilt (23.06) and SpeedErrFilt2 (23.11) are filtering the speed error (∆n) and should be used for
filter times greater than 30 ms. It is recommended to set SpeedErrFilt (23.06) = SpeedErrFilt2 (23.11).
Int. Scaling: 1 == 1 ms Type: I Volatile: N
0
10000
5
ms
50.07 - 50.09 Unused
50.10 SpeedLev (speed level)
When
MotSpeed (1.04) reaches SpeedLev (50.10), the bit AboveLimit [MainStatWord (8.01) bit 10] is set.
Internally limited from:
rpmtorpm
20000
32767
*)29.2(
20000
32767
*)29.2(−
Note:
With
SpeedLev (50.10) it is possible to automatically switch between the two p- and i-parts of the speed
controller, see
Par2Select (24.29) = SpeedLevel or SpeedError.
Int. Scaling: (2.29) Type: I Volatile: N
0
10000
1500
rpm
50.11 DynBrakeDly (dynamic braking delay)
In case of dynamic braking with EMF feedback [
M1SpeedFbSel (50.03) = EMF] or a speed feedback fault
there is no valid information about the motor sp
eed and thus no zero speed information. To prevent an
interlocking of the drive after dynamic braking the speed is assumed zero after
DynBrakeDly (50.11) is
elapsed:
-
1 s = the motor voltage is measured directly at the motor terminals and is thus valid during
dynamic braking
0 s
= no zero speed signal for dynamic braking is generated
1 s to 3000 s
= zero speed signal for dynamic braking is generated after the programmed time is
elapsed
Int. Scaling: 1 == 1 s Type: I Volatile: N
-1
3000
0
s
50.12 M1TachoAdjust (tacho adjust)
Fine tuning of analog tacho. The value equals the actual speed measured by means of a hand held tacho:
M1TachoAdjust (50.12)
= speed actual
HandHeldTacho
Internally limited to:
rpm
20000
32767
*)29.2(±
Note:
Changes of
M1TachoAdjust (50.12) are only valid during tacho fine-tuning [ServiceMode (99.06) =
TachFineTune
]. During tacho fine-tuning M1SpeedFbSel (50.03) is automatically forced to EMF.
Attention:
The value of
M1TachoAdjust (50.12) has to be the speed measured by the hand held tacho and not the delta
between speed reference and measured speed.
Int. Scaling: (2.29) Type: I Volatile: Y
-10000
10000
0
rpm
50.13 M1TachoVolt1000 ( tacho voltage at 1000 rpm)
M1TachoVolt1000 (50.13)
is used to adjust the voltage the analog tacho is generating at a speed of 1000 rpm:
−
M1TachoVolt1000 (50.13) ≥ 1 V, the setting is used to calculate the tacho gain
−
M1TachoVolt1000 (50.13) = 0 V, the tacho gain is measured by means of the speed feedback assistant
−
M1TachoVolt1000 (50.13) = -1 V, the tacho gain was successfully measured and set by means of the
speed feedback assistant
Int. Scaling: 10 == 1 V Type: I Volatile: N
0
270
60
V
SpeedActTach
5.01
1.05
speed_act_tach_a.dsf
Analog tacho scaling
M1SpeedScale (50.01)
M1TachoAdjust (50.12)
M1TachoVolt1000 (50.13)
AITachoVal