Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

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5 PARAMETERS
5.2 Detailed list of parameters
207
5
PC24
RSBR
Forced stop
deceleration time
constant

Set a deceleration time constant for the forced stop deceleration function.
Set the time per ms from the rated speed to 0 r/min or 0 mm/s. Setting "0" will be 100 ms.
[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 1] or [AL. 51 Overload 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]
PC26
**COP8
Function selection
C-8 _ _ _ x For manufacturer setting 0h
_ _ x _ 0h
_ x _ _ 0h
x _ _ _ Load-side encoder cable communication method selection
Select an encoder cable to be connected to the CN2L connector.
0: Two-wire type
1: Four-wire type
When using a load-side encoder of A/B/Z-phase differential output method, set "0".
Incorrect setting will trigger [AL. 70] and [AL. 71].
The setting of this digit is used by servo amplifier with software version A1 or later. 0h
PC27
**COP9
Function selection
C-9 _ _ _ x Encoder pulse count polarity selection
Select a polarity of the linear encoder or load-side encoder.
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
The setting of this digit is used by servo amplifier with software version A1 or later. 0h
_ _ x _ For manufacturer setting 0h
_ 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.
The setting of this digit is used by servo amplifier with software version A1 or later. 0h
x _ _ _ For manufacturer setting 0h
No./symbol/
name Setting
digit Function Initial
value
[unit]
Forced stop deceleration
[Pr. PC24]
0 r/min
(0 mm/s)
Servo motor speed
Rated speed
Dynamic brake
deceleration
Setting
value Detection of
disconnection Alarm status
Z-phase-side
non-signal Standard (scale
measurement
function enabled) Full.
[AL. 71.6]
(Z-phase) [AL. 71.6]
(Z-phase)
Disabled 1
Enabled 0
― ―
Lin.
[AL. 20.6]
(Z-phase)
―