Siemens SINAMICS G120C DP User Manual

8.20 Motor control
Overview
The converter has two alternative methods to ensure the motor speed follows the con󹪝gured
speed setpoint:
• U/f control
• Vector control
8.20.1 Reactor, 󹪝lter and cable resistance at the converter output
Overview
Components between the converter and the motor in󹪞uence the closed-loop control quality of
the converter:
• Output reactor or sine-wave 󹪝lter
In the factory setting, for the motor data identi󹪝cation, the converter assumes that neither
output reactor nor sine wave 󹪝lter are connected at the converter output.
• Motor cable with unusually high cable resistance.
For the motor data identi󹪝cation, the converter assumes a cable resistance = 20% of the
stator resistance of the cold motor.
Function description
You must correctly set the components between the converter and motor to achieve an
optimum closed-loop control quality
Procedure
1. Set p0010=2.
2. Set the cable resistance in p0352.
3. Set p0230 to the appropriate value.
4. Set p0235 to the appropriate value.
5. Set p0010=0.
6. Carry out the quick commissioning and the motor identi󹪝cation again.
Commissioning (Page119)
You have set the reactor, 󹪝lter and cable resistance between the converter and motor.
❒
Advanced commissioning
8.20Motor control
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 299

Siemens SINAMICS G120C DP Specifications

General

Protection Rating	IP20
Frequency Range	0 to 650 Hz
Control Modes	V/f, sensorless vector control
Communication Interfaces	PROFIBUS DP
Ambient Temperature	-10 to +50 °C (without derating), -10 to +60 °C (with derating)
Overload Capacity	150 % rated current for 60 s, 200 % rated current for 3 s
Storage Temperature	-40 to +70 °C
Relative Humidity	5% to 95% (non-condensing)
Voltage Range	200 V to 240 V (±10%), 380 V to 480 V (±10%)
Output Voltage	0 V to Supply Voltage