Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 357

7. PARAMETERS
No./ Setting
symbol/name digit
PC45 _ _ _ x Encoder pulse count polarity selection
*COPA Select a polarity of the linear encoder or load-side encoder.
Function 0: Encoder pulse increasing direction in the servo motor CCW or positive direction
selection C-A
1: Encoder pulse decreasing direction in the servo motor CCW or positive direction
This digit is not available with MR-J4-03A6-RJ servo amplifiers.
_ _ x _ For manufacturer setting
_ x _ _ Selection of A/B/Z-phase input interface encoder Z-phase connection judgment
function
Select the non-signal detection status for the pulse train signal from the A/B/Z-phase
input interface encoder used as a linear encoder or load-side encoder.
This function is enabled only when you use an A/B/Z-phase input interface encoder.
This digit is not available with MR-J4-03A6-RJ servo amplifiers.
x _ _ _ For manufacturer setting
PC51 Set a deceleration time constant when you use the forced stop deceleration function.
RSBR Set the time per ms from the rated speed to 0 r/min or 0 mm/s.
Forced stop Setting "0" will be 100 ms.
deceleration
time constant
Servo motor speed
(Linear servo
motor speed)
[Precautions]
If the servo motor torque or linear servo motor thrust is saturated at the maximum
value during forced stop deceleration because the set time is too short, the time to
stop will be longer than the set time constant.
[AL. 50 Overload alarm 1] or [AL. 51 Overload alarm 2] may occur during forced
stop deceleration, depending on the set value.
After an alarm that leads to a forced stop deceleration, if an alarm that does not lead
to a forced stop deceleration occurs or if the control circuit power supply is cut,
dynamic braking will start regardless of the deceleration time constant setting.
Setting range: 0 to 20000
Detection of
disconnection
Setting
value
Z-phase-side
non-signal
_ 0 _ _ Enabled
_ 1 _ _ Disabled
Rated speed Forced stop deceleration
0 r/min
(0 mm/s)
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Function
Alarm status
Full. Lin.
[AL. 71.6] [AL. 20.6]
(Z-phase) (Z-phase)
Dynamic brake
deceleration
[Pr. PC51]
7 - 52
Control mode
Initial
value
[unit]
0h
0h
0h
0h
100
[ms]