Siemens Micromaster 420 Operating Instruction page 82

International English
Parameter
Number
Note
Under certain circumstances, the inverter may reduce the Pulse frequency to provide
protection against over-temperature (see P0290, Level 3).
Minimum of pulse frequency depends on P1082 Max. frequency and P0310 Motor
frequency rating.
P1820 Reverse output phase sequence
Changes direction of motor rotation without changing setpoint polarity.
Possible values
0 =
1 =
P1910 Select motor data identification
Performs stator resistance measuring.
Possible values:
0=No measurement – (P0350 setting will be used)
1=Stator resistance measurement - (Overwrites P0350 setting)
2=Stator resistance measurement. This does not overwrite the values already
calculated.– (original P0350 setting will be used)
Notes
Motor data must be correctly entered before stator resistance measurement is initiated.
Once enabled (P1910 =1) A0541 will be generated warning that the stator resistance
measurement will be performed at next ON command.
If setting 1 is selected, the manual/calculated value for the stator resistance (see P0350) is
overwritten.
If setting 2 is selected, the values already calculated are not overwritten.
r1912 Identified stator resistance
Displays measured stator resistance value (line-to-line) in Ohms (measured using P1910 =
1 or 2).
P2000 Reference frequency
Full-scale frequency setting used by serial link, analog I/O. This corresponds to 4000H.
82
Parameter Name
Normal
Reverse phase sequence.
5. SYSTEM PARAMETERS
Min
Max
[Default]
Units
0
1
[0]
-
0
2
[0]
-
-
-
[-]
Ohms
1
650
[***]
Hz
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
♦ ♦ ♦ ♦ P0003 User
Access Level
♦ ♦ ♦ ♦ P0004 Setting
♦ ♦ ♦ ♦ Changeable
♦ ♦ ♦ ♦ Status
2
2
2
3
2
3
2
20