Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 209

No./symbol/ Setting Function
name digit

PC24 Set a deceleration time constant for the forced stop deceleration function.
RSBR Set the time per ms from the rated speed to 0 r/min or 0 mm/s. Setting "0" will be 100 ms.
Forced stop
deceleration time
constant
Servo motor speed
[Precautions]
• If the servo motor torque or linear servo motor thrust is saturated at the maximum value during forced stop
• [AL. 50 Overload 1] or [AL. 51 Overload 2] may occur during forced stop deceleration, depending on the
• After an alarm that leads to a forced stop deceleration, if an alarm that does not lead to a forced stop
Setting range: 0 to 20000
PC26 _ _ _ x For manufacturer setting
**COP8
_ _ x _
Function selection
_ x _ _
C-8
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.
PC27 _ _ _ x Encoder pulse count polarity selection
**COP9 Select a polarity of the linear encoder or load-side encoder.
Function selection 0: Encoder pulse increasing direction in the servo motor CCW or positive direction
C-9 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.
_ _ 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.
The setting of this digit is used by servo amplifier with software version A1 or later.
Setting
value
0
1
x _ _ _ For manufacturer setting
Rated speed
0 r/min
(0 mm/s)
deceleration because the set time is too short, the time to stop will be longer than the set time constant.
set value.
deceleration occurs or if the control circuit power supply is cut, dynamic braking will start regardless of the
deceleration time constant setting.
Detection of Alarm status
disconnection
Z-phase-side Standard (scale
non-signal measurement
function enabled)
Enabled [AL. 71.6]
(Z-phase)
Disabled ―
Forced stop deceleration
[Pr. PC24]
Full.
[AL. 71.6]
(Z-phase)
―
Initial
value
[unit]
100 [ms]
Dynamic brake
deceleration
0h
0h
0h
0h
0h
0h
0h
Lin.
[AL. 20.6]
(Z-phase)
―
0h
5 PARAMETERS
5.2 Detailed list of parameters
5
207