9. MANUFACTURER FUNCTIONS
9 - 4
9.3 Machine diagnosis function
From the data in the servo amplifier, this function estimates the friction and vibrational component of the
drive system in the equipment, 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.
During estimation
2C20h
2C21h/2C22h
2C23h/2C24h
2C25h to 2C28h
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
Estimation completed
Estimation completed
During estimation
Estimation completed
During estimation
Undefined value
Estimated value
Undefined value
Estimated value
Undefined value
Estimated value
Index Sub Access
Name
Data
Type
Default Description
2C20h
0
ro
Machine diagnostic status
U16
Refer to section 10.1.
2C21h 0
ro
Static friction torque at
forward rotation
I16
Static friction at forward rotation torque is
displayed in increments of 0.1%.
2C22h 0
ro
Dynamic friction torque at
forward rotation (at rated
speed)
I16
Dynamic friction at forward rotation torque
at the rated speed is displayed in
increments of 0.1%.
2C23h 0
ro
Static friction torque at
reverse rotation
I16
Static friction at reverse rotation torque is
displayed in increments of 0.1%.
2C24h 0
ro
Dynamic friction torque at
reverse rotation (at rated
speed)
I16
Dynamic friction at reverse rotation torque
at the rated speed is displayed in
increments of 0.1%.
2C25h 0
ro
Oscillation frequency during
motor stop
I16
Vibration frequency during stop and servo-
lock is displayed in increments of 1 Hz.
2C26h 0
ro
Vibration level during motor
stop
I16
Vibration level during stop and servo-lock is
displayed in increments of 0.1%.
2C27h 0
ro
Oscillation frequency during
motor operating
I16
Vibration frequency during operation is
displayed in increments of 1 Hz.
2C28h 0
ro
Vibration level during motor
operating
I16
Vibration level during operation is displayed
in increments of 0.1%.
9.4 Servo amplifier life diagnosis function
You can check the cumulative energization time and the number of on/off times of the inrush relay from the
data in the servo amplifier.
This function gives an indication of the replacement time for parts of the servo amplifier including a capacitor
and a relay before they malfunction.
The information of the servo amplifier life diagnosis function can be obtained with the following objects.
Index Sub Access
Name
Data
Type
Default Description
2C18h
0
ro
Power ON cumulative time
U32
The cumulative energization time of the
servo amplifier is returned.
2C19h 0
ro
Number of inrush relay on/
off times
U32
The number of on/off times of the inrush
relay of the servo amplifier is returned.
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