Operating instructions

MM420 Parameter List 04/02
MICROMASTER 420 Parameter List
28 6SE6400-5BA00-0BP0
P0346 Magnetization time Min: 0.000
CStat: CUT Datatype: Float Unit: s Def: 1.000
P-Group: MOTOR Active: Immediately QuickComm. No Max: 20.000
Sets magnetization time [s], i.e. waiting time between pulse enable and start of ramp-up. Motor
magnetization builds up during this time.
Magnetization time is normally calculated automatically from the motor data and corresponds to the rotor
time constant (r0384).
Note:
If boost settings are higher than 100 %, magnetization may be reduced.
Default value is dependant on inverter rated power.
Notice:
An excessive reduction of this time can result in insufficient motor magnetization.
P0347 Demagnetization time Min: 0.000
CStat: CUT Datatype: Float Unit: s Def: 1.000
P-Group: MOTOR Active: Immediately QuickComm. No Max: 20.000
Changes time allowed after OFF2 / fault condition, before pulses can be re-enabled.
Note:
The demagnetization time is approximately 2.5 x rotor time constant (r0384) in seconds.
Default value is dependant on inverter rated power.
Notice:
Not active following a normally completed ramp-down, e.g. after OFF1, OFF3 or JOG.
Overcurrent trips will occur if the time is decreased excessively.
P0350 Stator resistance (line-to-line) Min: 0.00001
CStat: CUT Datatype: Float Unit: Ohm Def: 4.0
P-Group: MOTOR Active: Immediately QuickComm. No Max: 400.0
Stator resistance value in [Ohms] for connected motor (from line-to-line). The parameter value includes the
cable resistance.
There are three ways to determine the value for this parameter:
1. Calculate using
P0340 = 1 (data entered from rating plate) or
P0010 = 1, P3900 = 1,2 or 3 (end of quick commissioning).
2. Measure using P1910 = 1 (motor data identification - value for stator resistance is overwritten).
3. Measure manually using an Ohmmeter.
Note:
Since measured line-to-line, this value may appear to be higher (up to 2 times higher) than expected.
The value entered in P0350 (stator resistance) is the one obtained by the method last used.
Default value is dependant on inverter rated power.
r0370 Stator resistance [%] Min: -
Datatype: Float Unit: % Def: -
P-Group: MOTOR Max: -
Displays standardized stator resistance of motor equivalent circuit (phase value) in [%].
Note:
100 % means :
0305P
0304P
ratedmot
Z ⋅
r0372 Cable resistance [%] Min: -
Datatype: Float Unit: % Def: -
P-Group: MOTOR Max: -
Displays standardized cable resistance of motor equivalent circuit (phase value)in [%]. It is estimated to be
20 % of the stator resistance.
Note:
100 % means :
0305P
0304P
ratedmot
Z ⋅
r0373 Rated stator resistance [%] Min: -
Datatype: Float Unit: % Def: -
P-Group: MOTOR Max: -
Displays rated stator resistance of the motor equivalent circuit (phase value) in [%].
Note:
100 % means :
0305P
0304P
ratedmot
Z ⋅
Level:
3
Level:
3
Level:
2
Level:
4
Level:
4
Level:
4