Mitsubishi Electric MELSERVO-JN Series, Instruction Manual

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Introduction
2) When P

CMX
CDV

Servo motor encoder resolution
FBP (parameter No. PA05) (Note) ≠ C
Note. When "0" is set to the FBP (parameter No. PA05), the FBP becomes the servo motor encoder resolution.
During the operation, the servo-on (SON), the forward/reverse rotation stroke end (LSP/LSN) was
turned off, or the clear (CR) or the reset (RES) was turned on. (Cause C)
If a malfunction may occur due to much noise, increase the input filter setting (parameter No. PD19).
3) When C

Δ ≠ M
Mechanical slip occurred between the servo motor and machine. (Cause B)
4. Tough drive function
CAUTION
Since the operation status of devices may be changed by the tough drive
operation, check for any problems before making this function valid.
POINT
For details of the tough drive function, refer to section 7.1.
The tough drive function continues the operation not to stop a machine in such situations when normally an
alarm is activated.
Three types of tough drive function can be selected in parameter No. PA04.
Instantaneous power failure tough drive function selection
Set tough drive function for instantaneous power failure of the main
circuit power supply.
Vibration tough drive function selection
Set the function for vibration suppression.
1
Overload tough drive function
Overload tough drive function selection
Set the tough drive function for overload.
Parameter No. PA04
Setting
0
Setting
Invalid
Valid
Vibration tough drive function
0
1
Setting
0
1 Invalid
Valid
Instantaneous power failure tough drive function
Valid
Invalid