Specification Outline; How To Use The Function [G] [Wg] - Mitsubishi Electric 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
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 an alarm occurrence by automatically shortening the sampling period to only 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 Automatic setting mode
*1
Number of channels Analog 32 bits × 7 channels + digital 1 bit × 8 channels
Maximum number of records 1024
*2
Sampling cycle Varies depending on [Pr. PA23 Drive recorder desired alarm
trigger setting].
Number of histories 16
Trigger condition Alarm trigger
Trigger position 90 %
*4
Auxiliary recording data Instantaneous monitor data, system configuration display data, servo parameters
*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 the alarm to be triggered, refer to the following.
Page 203 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 203 List of auxiliary recording data

How to use the function [G] [WG]

The automatic setting mode is enabled in the drive recorder function when using factory settings. If the initial
setting is not satisfactory, 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 history 15 (Obj. 2A7Fh)].
Refer to the following for using the manual setting mode to record with any data and trigger.
Page 186 Saving the drive recorder data in manual setting mode
*3
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 %
4 APPLICABLE FUNCTION
4.4 Drive recorder
4
185