Siemens Micromaster 420 Operating Instruction page 56

International English
Parameter
Number
P0311 Motor speed rating
Note 1:
Nominal motor speed (rpm) from rating plate - see diagram P0304
Note 2:
This parameter can only be changed when P0010=1
Note 3
This parameter must be correct for slip compensation to function properly.
Note 4:
A setting of 0 will cause the value to be calculated internally.
P0335 Motor cooling
Specifies motor cooling system used
Possible settings:
0 self-cooled – using shaft mounted fan attached to motor
1 force-cooled – using separately powered cooling fan
P0340 Calculation of motor parameters
Possible settings:
0 "No calculation"
1 "Calculation of motor parameters from entered rating plate data"
Calculates a variety of motor parameters, including P0344 (Level 3) (motor weight), P0350
(stator resistance), P0346 (Level 3) (magnetization time) and P0347 (Level 3)
(demagnetization time), P2000 (reference frequency), P2002 (Level 3) (reference current).
Note
This parameter is required during commissioning to optimize the inverter performance.
P0350 Stator resistance, line-to-line
Stator resistance value in Ohms for the connected motor.
There are three methods to determine the value for this parameter:
1. It is possible to calculate this value using P0340 = 1
2. It is possible to measure this value using P1910 = 1
3. Manual measurement using an Ohmmeter.
Note
The value entered in P0350 is the one from the method last used.
2
P0611 Motor I t time constant
Defines motor thermal time constant and is automatically calculated from the motor data
(P0340).
Note:
Larger number increases time taken for calculated motor temperature to change.
56
Parameter Name
5. SYSTEM PARAMETERS
Min
Max
[Default]
Units
0
40000
***
[ ]
1/min
0
1
[0]
-
0
1
[0]
-
0
300
[***]
Ohm
0
16000
[***]
s
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
♦ ♦ ♦ ♦ P0003 User
Access Level
♦ ♦ ♦ ♦ P0004 Setting
♦ ♦ ♦ ♦ Changeable
♦ ♦ ♦ ♦ Status
1
3
' '
2
3
2
3
2
3
'•'
2
3