Mitsubishi Electric MR-J4, Instruction Manual

Page: 248 / 794

5. PARAMETERS
5 - 49
No./symbol/
name
Setting
digit
Function
Initial
value
[unit]
Control
mode
P S T
PC45
*COPA
Function
selection C-A _ _ _ X Encoder pulse count polarity selection
Select a polarity of the linear encoder or load-side encoder.
0: Encoder pulse increases in the servo motor CCW or positive direction.
1: Encoder pulse decreases in the servo motor CCW or positive direction.
This digit is not available with MR-J4-03A6 servo amplifiers.
0h
_ _ X _ For manufacturer setting 0h
_ X _ _ Selection of A/B/Z-phase input interface encoder Z-phase connection judgement
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 servo amplifiers.
0h
Setting
value
Detection of
disconnection
Alarm status
Z-phase-side non-
signal
Fully closed
loop system Linear servo
system
0 Enabled
[AL. 71.6]
(Z-phase) [AL. 20.6]
(Z-phase)
1 Disabled
X _ _ _ For manufacturer setting 0h
PC51
RSBR
Forced stop
deceleration
time constant Set deceleration time constant when you use the forced stop deceleration function.
Set the time per ms from the rated speed to 0 r/min or 0 mm/s.
Forced stop deceleration
[Pr. PC51]
0 r/min
Servo motor speed
Rated speed
Dynamic brake
deceleration
(Linear servo
motor speed)
(0 mm/s)
[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
100
[ms]