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5. PARAMETERS
5 - 40
No. Symbol Name and function
Initial
value
[unit]
Setting
range
PC24 RSBR Forced stop deceleration time constant
This is used to 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.PC24]
0 r/min
(0 mm/s)
Servo motor speed
Rated speed
Dynamic brake
deceleration
(Linear servo motor
speed)
[Precautions]
If the servo motor torque or linear servo motor thrust is saturated at the maximum torque
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.
Set a longer time than deceleration time at quick stop of the controller. If a shorter time is
set, [AL. 52 Error excessive] may occur.
100
[ms]
0 to
20000
PC26 **COP8 Function selection C-8
Used to select the communication method of the encoder cable to be connected to the CN2L
connector of MR-J4-_B_-RJ.
Refer to the
"Name and
function" column.
Setting
digit
Explanation
Initial
value
_ _ _ x For manufacturer setting 0h
_ _ x _ 0h
_ x _ _ 0h
x _ _ _ Load-side encoder communication method
0: Two-wire type
1: Four-wire type
When using an encoder of A/B/Z-phase differential output method,
set "0".
Setting "1" by using a servo amplifier other than MR-J4-_B_-RJ will
trigger [AL. 37].
0h