Siemens SINAMICS G220 - Settings for a Pulling Load

Procedure
To handle critical applications, we recommend the following settings:
• Speed control with encoder and encoderless speed control
– Increase p1452 (smoothing the speed actual value).
– Increase p1472 (integral time T
I
): T
I
≥ 4 · p1452
– If, after these measures, the speed controller does not operate with an adequate dynamic
performance, then increase p1470 (gain K
P
) step-by-step.
• Additional setting for speed control with encoder
– Increase p1441 (smoothing the speed actual value): p1441=2…4ms.
You have set the motor control for these critical applications.
14.10.5.8 Settings for a pulling load
Overview
For a pulling load, e.g. a hoisting gear, a permanent force is exerted on the motor.
For a pulling load, we recommend that you use closed-loop speed control with an encoder.
For encoderless closed-loop speed control a number of special settings are required to
further ensure safe operation.
Requirement
WARNING
The load falls due to incorrect closed-loop control settings
For encoderless speed control, the converter calculates the actual speed based on an electric
motor model. In applications with pulling loads - e.g. hoisting gear, lifting tables or vertical
conveyors - an incorrectly set motor model or other incorrect settings can mean that the load
falls. A falling load can result in death or serious injury.
• Carefully follow the setting recommendations.
Procedure
For a pulling load, we recommend the following settings for the motors:
• All motors
– Correctly set the motor data during quick commissioning.
– Carry out the motor data identi󹪝cation.
• Motors with encoder
– Before switching on, enter a speed setpoint > 0.
As a consequence, the speed controller establishes the setpoint torque more quickly.
Functions
14.10Closed-loop drive control
SINAMICS G220 converter
516 Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB