Operating instructions

04/02 1 Parameters
MICROMASTER 420 Parameter List
6SE6400-5BA00-0BP0
65
P1203 Search rate: Flying start
Min: 50
CStat: CUT Datatype: U16 Unit: % Def: 100
P-Group: FUNC Active: first confirm QuickComm. No Max: 200
Sets factor by which the output frequency changes during flying start to synchronize with turning motor. This
value is entered in [%] defines the reciprocal initial gradient in the search sequence (see curve below).
Parameter P1203 influences the time taken to search for the motor frequency.
f motor
t
1 ms
0310P
100
r0330
[%] P1203
[%] 2
= f [%] 2
[ms] 1
[Hz] f
[Hz] f
[ms] t
[%] P1203
nomslip,
⋅⋅∆Þ⋅⋅
∆
∆
=
f search
∆ f
P0310
100
r0330
2 P1082 f 2 + f
nomslip,max ⋅⋅+=
The search time is the time taken to search through all frequencies between max. frequency P1082 + 2 x
f_slip to 0 Hz.
P1203 = 100 % is defined as giving a rate of 2 % of f_slip,nom / [ms].
P1203 = 200 % would result in a rate of frequency change of 1 % of f_slip,nom / [ms].
Example:
For a motor with 50 Hz, 1350 rpm, 100 % would produce a maximum search time of 600 ms. If the motor is
turning, the motor frequency is found in a shorter time.
Note:
A higher value produces a flatter gradient and thus a longer search time.
A lower value has the opposite effect.
r1204 Status word: Flying start V/f Min: -
Datatype: U16 Unit: - Def: -
P-Group: FUNC Max: -
Bit parameter for checking and monitoring states during search, if V/f control mode is selected (see P1300).
Bitfields:
Bit00 Current applied 0 NO
1 YES
Bit01 Current could not be applied 0 NO
1 YES
Bit02 Voltage reduced 0 NO
1 YES
Bit03 Slope-filter started 0 NO
1 YES
Bit04 Current less threshold 0 NO
1 YES
Bit05 Current-minimum 0 NO
1 YES
Bit07 Speed could not be found 0 NO
1 YES
Level:
3
Level:
4