12. Maintenance and Inspection
12-1
12.
Maintenance and Inspection
This chapter explains how to perform basic maintenance and inspection tasks as well as diagnose and
troubleshoot the servo motor and drive.
12.1
Maintenance and Inspection
12.1.1
Precautions
1.
When measuring the motor voltage: The PWM controls the voltage output from the servo amp to
the motor. Because of this, the waves take the form of pulses. Use a rectifier voltmeter for
accurate measurements because different meters may produce largely different results.
2.
When measuring the motor current: Connect and use a moving-iron-type ampere meter because
the motor's reactance smooths the pulse waveform to produce partial sine waves.
3.
When measuring the electric power: Use an electrodynamo-meter and measure based on the 3
power meter method.
4.
Other gauges: When using an oscilloscope or digital voltmeter, do not allow them to touch the
ground. Use an input current gauge of 1mA or lower.
Summary of Contents for L7NHF Series
Page 2: ......
Page 14: ...Table of Contents xii ...
Page 60: ...2 Wiring and Connection 2 38 ...
Page 158: ...6 Safety Functions 6 6 ...
Page 172: ...7 Tuning 7 14 ...
Page 182: ...8 Procedure Function 8 10 ...
Page 192: ...9 Full Closed Control 9 10 ...
Page 214: ...10 Object Dictionary 10 22 ...
Page 363: ...11 Product Specifications 11 43 ...
Page 364: ......