Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 343

Part 6: Review on Replacement of MR-J3-_T_(DIO command/ Serial communication operation) with MR-J4-_A_-RJ
MR-J3-_T_
No. Name and function
PC14 Backlash compensation
Used to set the backlash compensation made when the
command direction is reversed.
This function compensates for the number of backlash
pulses in the opposite direction to the home position
return direction.
For the home position ignorance (servo-on position as
home position), this function compensates for the
number of backlash pulses in the opposite direction to
the first rotating direction after establishing the home
position by switching ON the servo-on (SON).
In the absolute position detection system, this function
compensates for the backlash pulse count in the
direction opposite to the operating direction at power-on.
PC16 Electromagnetic brake sequence output
Used to set the delay time (Tb) between when the
electromagnetic brake interlock (MBR) switches off and
when the base circuit is shut off.
PC17 Zero speed
Used to set the output range of the zero speed (ZSP).
Zero speed signal detection has hysteresis width of 20
r/min.
PC18 Alarm history clear
Used to clear the alarm history.
0 0 0 x:
Alarm history clear
0: Disabled
1: Enabled
When alarm history clear is made valid, the alarm history
is cleared at next power-on. After the alarm history is
cleared, the setting is automatically made invalid (reset
to 0).
Initial
No.
value
0 PT14 Backlash compensation
Set a backlash compensation for reversing command
direction.
This parameter compensates backlash pulses against
the home position return direction.
For the home position ignorance (servo-on position as
home position), this turns on SON (Servo-on) and
decides a home position, and compensates backlash
pulses against the first rotation direction.
Setting range: 0 to 65535
100 PC16 Electromagne tic brake sequence output
Set the delay time between MBR (Electromagnetic brake
interlock) and the base drive circuit is shut-off.
Setting range: 0 to 1000
50 PC17 Zero speed
Set an output range of ZSP (Zero speed detection).
ZSP (Zero speed detection) has hysteresis of 20 r/min or
20 mm/s.
Setting range: 0 to 10000
0000h PC18 Alarm history clear
_ _ _ x:
Alarm history clear selection
Used to clear the alarm history.
0: Disabled
1: Enabled
When "Enabled" is set, the alarm history will be cleared
at the next power-on. After the alarm history is cleared,
the setting is automatically disabled.
_ _ x _:
For manufacturer setting
_ x _ _:
For manufacturer setting
x _ _ _:
For manufacturer setting
6 - 64
MR-J4-_A_-RJ
Name and function
Initial
value
0
0
50
0h
0h
0h
0h