Motor Data Identification - Siemens SINAMICS S150 NEMA Operating Instructions Manual

Functions, monitoring and protective functions
9.3 Drive functions
Unexpected motor movement during motor identification in the rotating mode
When selecting motor identification with optimization in the rotating mode, after
commissioning, the drive initiates that the motor rotates with speeds that can reach the
maximum motor speed.
• Observe the general safety instructions.
• Ensure that the EMERGENCY STOP functions are fully functional when commissioning
9.3.1.1

Motor data identification

Description
Motor identification with p1910 is used for determining the motor parameters at standstill
(see also p1960: speed controller optimization):
● Equivalent circuit diagram data p1910 = 1
● Magnetization characteristic p1910 = 3
For control-related reasons, you are strongly advised to carry out motor identification
because the equivalent circuit diagram data, motor cable resistance, IGBT on-state voltage
and compensation for the IGBT lockout time can only be estimated if the data on the rating
plate is used. For this reason, the stator resistance is a very important for the stability of
sensorless vector control or for the voltage boost for the V/f characteristic.
Motor identification is essential if long supply cables or third-party motors are used. When
motor data identification is started for the first time, the following data is determined with
p1910 on the basis of the data on the rating plate:
Table 9- 2 Data determined using p1910
Induction motor
p1910 = 1
Stator resistance (p0350)
•
Rotor resistance (p0354)
•
Stator leakage inductance (p0356)
•
Rotor leakage inductance (p0358)
•
Magnetizing inductance (p0360)
•
Drive converter valve threshold voltage (p1825)
•
Converter valve interlocking times (p1828 ...
•
p1830)
p1910 = 3
Saturation characteristics (p0362 ... p0366)
•
506
WARNING
the drive.
Permanent-magnet synchronous motor
Stator resistance (p0350)
•
Stator resistance q axis (p0356)
•
Stator inductance d axis (p0357)
•
Drive converter valve threshold voltage (p1825)
•
Converter valve interlocking times (p1828 ...
•
p1830)
Not recommended
Notice: When encoder adjustment is complete, the
motor is automatically rotated approx. one revolu-
tion in order to determine the zero marker of the
encoder.
Operating Instructions, 12/2018, A5E36652151A
Enclosed Drives