Standstill Measurement - Siemens SINAMICS G150 Operating Instructions Manual

During motor identification, the drive might set the motor in motion.
The EMERGENCY OFF functions must be fully operational during commissioning. To
protect the machines and personnel, the relevant safety regulations must be observed.
9.2.1.1

Standstill measurement

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 engineering 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 type
plate is used. For this reason, the stator resistance for the stability of sensorless vector
control or for the voltage boost with the V/f characteristic is very important.
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 = 1 on the basis of the data on the type plate (rated data):
Table 9- 1 Data determined using p1910
Induction motor
p1910 = 1
•
•
•
•
•
•
•
p1910 = 3
•
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
DANGER
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)
Saturation characteristics (p0362 ... p0366)
Functions, Monitoring, and Protective Functions
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
revolution in order to determine the zero marker
of the encoder.
9.2 Drive Functions
421