Diagnostic Tools; Mechanical Analysis - YASKAWA SGD7S Product Manual

8.14

Diagnostic Tools

8.14.1

Mechanical Analysis

Overview
You can connect the SERVOPACK to a computer to measure the frequency characteristics of
the machine. This allows you to measure the frequency characteristics of the machine without
using a measuring instrument.
The motor is used to cause machine vibration and then the speed frequency characteristics for
the motor torque are measured. The measured frequency characteristics can be used to deter-
mine the machine resonance.
You determine the machine resonance for use in servo tuning and as reference for considering
changes to the machine. The performance of the servo cannot be completely utilized depend-
ing on the rigidity of the machine. You may need to consider making changes to the machine.
The information can also be used as reference for servo tuning to help you adjust parameters,
such as the servo rigidity and torque filter time constant.
You can also use the information to set parameters, such as the notch filters.
 Mechanical analysis requires operating the motor and therefore presents hazards.
Before you execute mechanical analysis, check the information provided in the SigmaWin+
operating manual.
Motor speed
Servomotor
Reference that
causes vibration
WARNING

8.14.1 Mechanical Analysis

SERVOPACK
Motor speed
Reference that
causes vibration

8.14 Diagnostic Tools

Computer
Support
Software
8-95
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