Machine Diagnosis Function - Mitsubishi Electric MR-JE-C Series Instruction Manual

6. MANUFACTURER FUNCTIONS

6.3 Machine diagnosis function

This function estimates the friction and vibrational component of the drive system in the equipment based on
the data in the servo amplifier, and recognizes an error in the machine parts, including a ball screw and
bearing. The information of the machine diagnosis function can be obtained with the following objects.
2C20h
Bit 0 to Bit 3
Friction estimation status at forward rotation
Bit 4 to Bit 7
Friction estimation status at reverse rotation
Bit 8 to Bit 11
Vibration estimation status
2C21h/2C22h
2C23h/2C24h
2C25h to 2C28h
Index Access
2C20h ro
Static friction torque at forward
2C21h ro
Dynamic friction torque at forward
2C22h ro
Static friction torque at reverse
2C23h ro
Dynamic friction torque at reverse
2C24h ro
Oscillation frequency during motor
2C25h ro
2C26h ro Vibration level during motor stop
Oscillation frequency during motor
2C27h ro
2C28h ro Vibration level during motor operating
During estimation
During estimation
During estimation
Undefined value
Undefined value
Undefined value
Name
Machine diagnostic status
rotation
rotation (at rated speed)
rotation
rotation (at rated speed)
stop
operating
Data
Default
Type
U16 0000h Refer to section 7.1.
Static friction at forward rotation torque is
I16 0
displayed in increments of 0.1%.
Kinetic friction at forward rotation torque at
I16 0 the rated speed is displayed in increments
of 0.1%.
Static friction at reverse rotation torque is
I16 0
displayed in increments of 0.1%.
Kinetic friction at reverse rotation torque at
I16 0 the rated speed is displayed in increments
of 0.1%.
Vibration frequency at stop/servo-lock
I16 0
Vibration frequency during stop/servo-lock
is displayed in increments of 1 Hz.
Vibration level at stop/servo-lock
I16 0
Vibration level during stop/servo-lock is
displayed in increments of 0.1%.
Vibration frequency during operation
I16 0
Vibration frequency during operation is
displayed in increments of 1 Hz.
Vibration level during operation
I16 0
Vibration level during operation is
displayed in increments of 0.1%.
6 - 4
Estimation completed
Estimation completed
Estimation completed
Estimated value
Estimated value
Estimated value
Description