Specification Outline; How To Use The Function [G] [Wg] - Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual

Specification outline

A specification outline of the drive recorder is shown in this section.
The drive recorder contains the automatic setting mode that uses factory settings and the manual setting mode that collects
waveforms by optionally setting the trigger condition, sampling cycle, and other areas with the servo parameters.
In the automatic setting mode, when an alarm occurs in the servo amplifier, conditions of the servo amplifier (such as the
servo motor speed and droop pulses) before/after alarm occurrence are recorded. Also, by setting the drive recorder to
operate only when a specific alarm occurs, data suitable for the alarm number that has occurred can be acquired. This mode
is useful for investigating the cause of alarm occurrence by automatically shortening the sampling period in the vicinity of the
alarm occurrence trigger.
Any condition can be set in the manual setting mode, making it useful for acquiring the waveform of a specific condition.
[WG]: The manual setting mode can be set to acquire waveforms for all axes if any one of A, B, or C axes satisfies the trigger
condition. Refer to [Pr. PF83 Drive recorder - Trigger operation axis common selection].
Item
*1
Number of channels
Maximum number of records
*2
Sampling cycle
Number of history entries
Trigger condition
Trigger position
*4
Auxiliary recording data
*1 For data that can be collected, refer to [Pr. PF90 Drive recorder - Analog channel setting 1] to [Pr. PF97 Drive recorder - Digital channel
setting 4].
*2 Depending on the timing of the data update, the on/off timing of the digital signal may appear to deviate.
*3 For alarms that are triggered, refer to the following.
Page 258 Waveform recording inapplicable alarm list
*4 For auxiliary recording data, refer to the following. In addition, if the trigger established is other than the alarm trigger, "Alarm occurrence
data" is not saved.
Page 259 List of auxiliary recording data

How to use the function [G] [WG]

The automatic setting mode is enabled for the drive recorder function in the factory settings. If the initial
setting does not meet your needs, set [Pr. PA23 Drive recorder desired alarm trigger setting] and collect data
suitable for analyzing the occurrence factors of alarms. If satisfactory data cannot be obtained, use the
manual setting mode to collect the necessary data.
When an alarm occurs, data of the generated alarm is recorded inside the servo amplifier. By reading the recorded data, the
cause of the alarm can be analyzed. The operation status of the drive recorder can be monitored using [Drive recorder status
(Obj. 2C02h)]. An outline of the time and other factors from when the drive recorder data was recorded can be checked by
using [Drive recorder history newest (Obj. 2A70h)] to [Drive recorder history15 (Obj. 2A7Fh)].
Refer to the following for using the manual setting mode to record with any data and trigger.
Page 238 Saving the drive recorder data in manual setting mode
4 APPLICABLE FUNCTIONS
236
4.6 Drive recorder
Automatic setting mode
Analog 32 bits × 7 channels + digital 1 bit × 8 channels
1024
Varies depending on [Pr. PA23 Drive recorder desired alarm
trigger setting].
16
*3
Alarm trigger
90 %
Instantaneous monitor data, system configuration display data, servo parameters
Manual setting mode
250 μs/500 μs/1 ms/2 ms/4 ms/8 ms/16 ms/32 ms/64 ms/128
ms/256 ms/512 ms/1024 ms
*3
Alarm trigger /Analog trigger/Digital trigger
0 to 100 %