Siemens SINAMICS G130 - Page 367

Setpoint channel and closed-loop control
7.4 Vector speed/torque control with/without encoder
Inverter chassis units
Operating Instructions, 07/2016, A5E00331449A
367
● No thermal model is available for the closed-loop control of a permanent-magnet
synchronous motor. The motor can only be protected against overheating by using
temperature sensors (PTC, KTY). To achieve a high level of torque accuracy, we
recommend the use of a temperature sensor (KTY) to measure the motor temperature.
Commissioning
The following sequence is recommended for commissioning:
● Configure the drive
When the drive is being commissioned using STARTER or the AOP30 operator panel,
the permanent-magnet synchronous motor must be selected. The motor data specified in
the table below must then be entered. Finally, the motor identification routine and speed
optimization (p1900) are activated. Encoder adjustment is activated automatically
together with the motor identification routine.
● Motor identification (standstill measurement, p1910)
● Speed controller optimization (rotary measurement, p1960)
Motor data for permanent-magnet synchronous motors
Table 7- 2 Motor data type plate
Parameter
Description
Comment
p0304 Rated motor voltage If this value is not known, the value "0" can also be
entered. Entering the correct value, however, means
that the stator leakage inductance (p0356, p0357) can
be calculated more accurately.
p0305
Rated motor current
p0307
Rated motor power
p0310
Rated motor frequency
p0311
Rated motor speed
p0314 Motor pole pair number If this value is not known, the value "0" can also be
entered.
p0316 Motor torque constant If this value is not known, the value "0" can also be
entered.
If the torque constant k
T
is not stamped on the type plate or specified in the data sheet, you
can calculate this value from the rated motor data or from the stall current I
0
and stall torque
M
0
as follows:
or