Operating instructions

MM420 Parameter List 04/02
MICROMASTER 420 Parameter List
80 6SE6400-5BA00-0BP0
r1344 CO: Imax controller volt. output Min: -
Datatype: Float Unit: V Def: -
P-Group: CONTROL Max: -
Displays amount by which the I_max controller is reducing the inverter output voltage.
P1350 Voltage soft start Min: 0
CStat: CUT Datatype: U16 Unit: - Def: 0
P-Group: CONTROL Active: first confirm QuickComm. No Max: 1
Sets whether voltage is built up smoothly during magnetization time (ON) or whether it simply jumps to
boost voltage (OFF).
f
V
t
1
P0346
P1350 P0346
V/f characteristic Softstart
V
f
f
Possible Settings:
0 OFF
1 ON
Note:
The settings for this parameter bring benefits and drawbacks:
P1350 = 0: OFF (jump to boost voltage)
Benefit: flux is built up quickly
Drawback: motor may move
P1350 = 1: ON (smooth voltage build-up)
Benefit: motor less likely to move
Drawback: flux build-up takes longer
P1800 Pulse frequency Min: 2
CStat: CUT Datatype: U16 Unit: kHz Def: 4
P-Group: INVERTER Active: Immediately QuickComm. No Max: 16
Sets pulse frequency of power switches in inverter. The frequency can be changed in steps of 2 kHz.
Pulse frequencies > 4 kHz selected on 380-480 V units reduce the maximum continuous motor current.
Dependency:
Minimum pulse frequency depends on P1082 (maximum frequency) and P0310 (rated motor frequency).
The maximal value of motor frequency P1082 is limited to pulse frequency P1800 (see P1082).
Note:
At 4 kHz, full output current is obtained up to 50 degrees C (CT mode); over 50 degrees C, full output may
be obtained at 8 kHz. #elseif defined CCB At 4 kHz, full output current is obtained up to 40 degrees C (CT
mode); over 40 degrees C, full output may be obtained at 8 kHz.
If silent operation is not absolutely necessary, lower pulse frequencies may be selected to reduce inverter
losses and radio-frequency emissions.
Under certain circumstances, the inverter may reduce the switching frequency to provide protection against
over-temperature (see P0290).
r1801 CO: Act. pulse frequency Min: -
Datatype: U16 Unit: kHz Def: -
P-Group: INVERTER Max: -
Actual pulse frequency of power switches in inverter.
Notice:
Under certain conditions (inverter overtemperature, see P0290), this can differ from the values selected in
P1800 (pulse frequency).
Level:
3
Level:
3
Level:
2
Level:
3