Start-Freq. Motor Model (Slvc); Hyst.-Freq. Motor Model (Slvc); Chng-Ov. Del. T Slvc Op.-Lp Ctrl; Chng-Ov. Del. T Slvc Cl.-Lp Ctrl - Siemens MICROMASTER 440 Parameter Manual

Issue 01/06
P1755[3]

Start-freq. motor model (SLVC)

CStat: CUT
P-Group: CONTROL
Enter the start frequency of sensorless vector control (SLVC), thereby SLVC switches over from open-loop
to closed-loop at that frequency.
The default setting depends on the motor power:
- 0 kW to 0.749 kW: 5.0 Hz
- 0.75 kW to 75 kW: 1.5 Hz
- 75.1 kW to 200 kW: 1.0 Hz
f_act
P1755
P1756 [Hz]
SLVC open loop
SLVC closed loop
=
P1756 [Hz] P1755
Index:
P1755[0] : 1st. Drive data set (DDS)
P1755[1] : 2nd. Drive data set (DDS)
P1755[2] : 3rd. Drive data set (DDS)
P1756[3]

Hyst.-freq. motor model (SLVC)

CStat: CUT
P-Group: CONTROL
Enters hysteresis frequency (in percent of start-frequency) to switch back from sensorless-vector-control
(SLVC) to current model.
Value is entered in the range 0 % to 50 % relative to P1755 (SLVC stop frequency).
Index:
P1756[0] : 1st. Drive data set (DDS)
P1756[1] : 2nd. Drive data set (DDS)
P1756[2] : 3rd. Drive data set (DDS)
P1758[3]

Chng-ov. del. t SLVC op.-lp ctrl

CStat: CUT
P-Group: CONTROL
Sets the minimum time when the changeover frequency is fallen below when changing from the closed-loop
into the open-loop controlled mode.
Index:
P1758[0] : 1st. Drive data set (DDS)
P1758[1] : 2nd. Drive data set (DDS)
P1758[2] : 3rd. Drive data set (DDS)
Dependency:
Refer to P1750, P1755, P1756
P1759[3]

Chng-ov. del. t SLVC cl.-lp ctrl

CStat: CUT
P-Group: CONTROL
Sets the minimum time when the changeover frequency is exceeded when changing from the open-loop
controlled into the closed-loop controlled mode.
Index:
P1759[0] : 1st. Drive data set (DDS)
P1759[1] : 2nd. Drive data set (DDS)
P1759[2] : 3rd. Drive data set (DDS)
Dependency:
Refer to P1750, P1755, P1756
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
Datatype: Float
Active: Immediately
P1758
P1756 [%]
⋅
[Hz]
100 [%]
Datatype: Float
Active: Immediately
Datatype: U16
Active: Immediately
Datatype: U16
Active: Immediately
Parameter Description
Min: 0.1
Unit: Hz Def: 5.0
QuickComm.: No Max: 250.0
Min: 10.0
Unit: % Def: 50.0
QuickComm.: No Max: 100.0
Min: 100
Unit: ms Def: 1500
QuickComm.: No Max: 2000
Min: 50
Unit: ms Def: 100
QuickComm.: No Max: 2000
Level
3
t
t
Level
3
Level
3
Level
3
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