Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 195

Part 4: Replacement of MR-J3W-_B with MR-J4W2-_B
No. Name and function
PC27 This parameter is not used. Do not change the value.
PC29 This parameter is not used. Do not change the value.
PC31 This parameter is not used. Do not change the value.
MR-J3W-_B
Initial
No.
value
0000h PC27 Function selection C-9
This parameter is not available with MR-J4W2-0303B6
servo amplifiers.
_ _ _ x:
Selection of encoder pulse count polarity
0: Encoder pulse increasing direction in the servo motor
CCW or positive direction
1: Encoder pulse decreasing direction in the servo motor
CCW or positive direction
_ _ x _:
For manufacturer setting
_ x _ _:
For manufacturer setting
x _ _ _:
For manufacturer setting
0000h PC29 Function selection C-B
Select the POL reflection at torque control.
_ _ _ x:
For manufacturer setting
_ _ x _ :
For manufacturer setting
_ x _ _ :
For manufacturer setting
x _ _ _ :
POL reflection selection at torque control
0: Enabled
1: Disabled
0000h PC31 Vertical axis freefall prevention compensation amount
Set the compensation amount of the vertical axis freefall
prevention function.
Set it per servo motor rotation amount.
When a positive value is set, compensation is performed
to the address increasing direction. When a negative
value is set, compensation is performed to the address
decreasing direction.
The vertical axis freefall prevention function is performed
when all of the following conditions are met.
1) Position control mode
2) The value of the parameter is other than "0".
3) The forced stop deceleration function is enabled.
4) Alarm occurs or EM2 turns off when the (linear) servo
motor speed is zero speed or less.
5) MBR (Electromagnetic brake interlock) was enabled in
[Pr. PD07] to [Pr. PD09], and the base circuit shut-off
delay time was set in [Pr. PC02].
4 - 46
MR-J4W2-_B
Name and function
Initial
value
0h
0h
0h
0h
0h
0h
0h
0h
0