[Pr. Pf25_Semi-F47 Function - Instantaneous Power Failure Detection Time (Instantaneous Power Failure Tough Drive - Detection Time) (Cvat)]; [Pr. Pf31_Machine Diagnosis Function - Friction Judgment Speed (Fric)]; [Pr. Pf32_Oscillation Detection Alarm Time (*Vibt)] - Mitsubishi Electric MELSERVO-J5 MR-J5-G Series User Manual

[Pr. PF25_SEMI-F47 function - Instantaneous power failure
detection time (instantaneous power failure tough drive -
detection time) (CVAT)]
Initial value
200 [ms]
Set the time until the occurrence of [AL. 010.1 Voltage drop in the control circuit power].
To comply with SEMI-F47 standard, changes from the initial value (200 ms) is not required.
When the instantaneous power failure time exceeds 200 ms, and the instantaneous power failure voltage is less than 70 % of
the rated input voltage, the power may be turned off normally even if a value larger than 200 ms is set in this servo parameter.
This function is disabled when [Pr. PA20.2 SEMI-F47 function selection] is set to "0" (Disabled).
[Pr. PF31_Machine diagnosis function - Friction judgment speed
(FRIC)]
Initial value
0 [r/min], [mm/s]
Set the servo motor speed to divide the friction estimation area between low-speed and high-speed in the friction estimation
process of machine diagnosis.
When the maximum operation speed is under the rated speed, it is recommended that a half the value of the maximum
operation speed be set.
When "0" is set, the judgment speed is half of the rated speed.
The setting value will be clamped at the permissible maximum speed.
By setting [Pr. PF34.6 Friction estimate area judgment speed setting] to "1" (Automatic setting), this servo parameter value
will be automatically calculated from the operation pattern during servo motor driving and overwrite the value.
Forward direction
Servo motor
0 r/min
speed
(0 mm/s)
Reverse direction

[Pr. PF32_Oscillation detection alarm time (*VIBT)]

Initial value
50 [100 ms]
Set the time from when oscillation is detected until the occurrence of an alarm or warning.
When "0" is set, the time until the occurrence of the alarm or warning is 5000 ms.
When an oscillation detection alarm or warning is generated during normal operation, set a value larger than "10" (1000 ms).
Setting range
30 to 500
Setting range
0 to 65535
Maximum speed in operation
Setting value of [Pr. PF31]
Operation pattern
Setting range
0 to 50
Setting method
Common
Setting method
Each axis
Setting method
Each axis
1 DETAILED LISTS OF SERVO PARAMETERS
1.7 Extension setting 3 servo parameters group ([Pr. PF_ _ ])
Supported software version
A0
Supported software version
A0
Supported software version
A0
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