Mitsubishi Electric MELSERVO-J5 Series User Manual page 27

Diagnostics
Subcategory Function
Drive data diagnosis Drive recorder
Graph function
Failure diagnosis Encoder communication diagnosis
function
Service life diagnosis Servo amplifier service life diagnosis
function
Motor service life diagnosis function
Machine diagnosis function
System diagnosis System configuration information
History
Subcategory Function
 Alarm history
Description
This function continuously monitors the servo status and
records the state transition before and after an alarm for a
fixed period of time. The recorded data can be checked
by the Waveform-Display button on the drive recorder
window of MR Configurator2 being clicked. However, the
drive recorder is not available when:
• The graph function of MR Configurator2 is being used.
• The machine analyzer function is being used.
• [Pr. PF21] is set to "-1".
• The controller is not connected (except the test
operation mode).
• An alarm related to the controller is occurring.
The long-term sampling is supported and various alarms
can be handled.
This function obtains the servo status in the graph.
This function obtains a graph by using the trigger
synchronized on multiple axes via a network.
This function diagnoses with MR Configurator2 whether
the encoder communication error is caused by the circuit
malfunction of the servo amplifier or by the malfunction of
the cables/encoder.
This function enables checking of the cumulative
energization time, the number of the inrush relay on/off
times, and the number of dynamic brake usage times. It
gives an indication of the replacement time for parts on
the servo amplifier with a service life (such as the
capacitor and the relay) before they malfunction. MR
Configurator2 is required for this function.
This function predicts failures of the equipment and the
servo motor based on the machine total travel distance. It
gives an indication of replacement time for servo motor.
This function uses the data in the servo amplifier to
estimate the friction and vibrational component of the
drive system in the equipment and to recognize an error
in machine parts such as ball screws and bearings.
This function automatically sets the threshold used for
detecting the error of machine parts, including a ball
screw and bearing. It outputs the warning when the
friction, vibrational component, and total revolution of the
servo motor are out of the set threshold. The error in the
machine parts including a ball screw and bearing can be
detected automatically.
This function estimates the friction of gear and loosening
of belt drive function (decrease in the belt tension), and
detects the error in the gear and belt.
This function uses MR Configurator2 to monitor
information such as servo amplifier model, connected
servo motor, and encoder.
Description
This function saves information of the alarm that occurred
in the servo amplifier. The information is saved in
chronological order and used for occasions such as
analyzing the cause of the alarm.
Detailed explanation
Refer to "Drive recorder" in the
following manual.
MR-J5 User's Manual
(Function)
Refer to "Graph function" in the
following manual.
MR-J5 User's Manual
(Function)

Refer to "Encoder
communication diagnosis
function" in the following
manual.
MR-J5 User's Manual
(Function)
Refer to "Servo amplifier
service life diagnosis function"
in the following manual.
MR-J5 User's Manual
(Function)
Refer to "Machine diagnosis" in
the following manual.
MR-J5 User's Manual
(Function)
Refer to "System configuration
display" in the following manual.
MR-J5 User's Manual
(Function)
Detailed explanation
Refer to "Alarm history" in the
following manual.
MR-J5 User's Manual
(Function)
2 FUNCTION
25
2.1 Function list
2