Vdc-Controller Output Limitation; Auto Detect Vdc Switch-On Levels; Reaction Of Kinetic Buffering - Siemens MICROMASTER 440 Parameter Manual

Issue 01/06
P1253[3]

Vdc-controller output limitation

CStat: CUT
P-Group: FUNC
Limits maximum effect of Vdc max controller.
Index:
P1253[0] : 1st. Drive data set (DDS)
P1253[1] : 2nd. Drive data set (DDS)
P1253[2] : 3rd. Drive data set (DDS)
P1254

Auto detect Vdc switch-on levels

CStat: CT
P-Group: FUNC
Enables/disables auto-detection of switch-on levels for Vdc control functionalities.
Following switch-on levels are calculated
- Switch-on level chopper
- Switch-on level compound brake
- Switch-on level Vdc_max controller r1242
P1254 does not have any effect on the
- Switch-on level kin. buffering r1246
Possible Settings:
0 Disabled
1 Enabled
Note:
The switch-on thresholds are only calculated during the start-up of the inverter after connection to the
mains. An online-adaption is not performed during operation. This means that modification of P1254 does
not immediately take effect and variations in the mains are also not initially taken into account.
P1254 = 0 (Automatic Detection disabled):
The above thresholds are calculated via P0210, if automatic detection is disabled.
P1256[3]

Reaction of kinetic buffering

CStat: CT
P-Group: FUNC
Enters reaction for kinetic buffering controller (Vdc-min controller).
Depending on the setting selected, the frequency limit defined in P1257 is used to either hold the speed or
disable pulses. If not enough regeneration is produced, drive may trip undervoltage.
Possible Settings:
0 Maintain DC-link until trip
1 Maintain DC-link until trip / stop
2 Control stop
Index:
P1256[0] : 1st. Drive data set (DDS)
P1256[1] : 2nd. Drive data set (DDS)
P1256[2] : 3rd. Drive data set (DDS)
Note:
P1256 = 0:
Maintain dclink voltage until mains is returned or drive is tripped undervoltage. The frequency is kept above
the frequency limit provided in P1257.
V
DC
P1245
V
DC_min
f
P1257
Pulse
enabled
1
0
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
Datatype: Float Unit: Hz
Active: Immediately QuickComm.: No
Datatype: U16 Unit: -
Active: Immediately QuickComm.: No
Datatype: U16 Unit: -
Active: Immediately QuickComm.: No
Parameter Description
Level
Min: 0.00
3
Def: 10.00
Max: 600.00
Level
Min: 0
3
Def: 1
Max: 1
Level
Min: 0
3
Def: 0
Max: 2
t
t
t
151