Mitsubishi Electric MELSERVO-J4 series Instruction Manual page 175

5. PARAMETERS
No. Symbol
PC20 *COP7 Function selection C-7
This is used to select an undervoltage alarm detection method.
Setting
digit
_ _ _ x
_ _ x _
_ x _ _
x _ _ _
PC21 *BPS Alarm history clear
Used to clear the alarm history.
Setting
digit
_ _ _ x
_ _ x _
_ x _ _
x _ _ _
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.
Servo motor speed
(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.
[AL. 10 Undervoltage] detection method selection
This is set when FR-RC-(H) or FR-CV-(H) is used and if [AL. 10
undervoltage] occurs due to distorted power supply voltage
waveform.
0: [AL. 10] not occurrence
1: [AL. 10] occurrence
For manufacturer setting
Alarm history clear selection
0: Disabled
1: Enabled
When you select "Enabled", the alarm history will be cleared at next
power-on. After the alarm history is cleared, the setting is
automatically disabled.
For manufacturer setting
Rated speed
0 r/min
(0 mm/s)
Name and function
Explanation
Explanation
Forced stop deceleration
[Pr.PC24]
5 - 38
Initial
value
[unit]
Refer to Name
and function
column.
Initial
value
0h
0h
0h
0h
Refer to Name
and function
column.
Initial
value
0h
0h
0h
0h
100
[ms]
Dynamic brake
deceleration
Setting
range
0 to
20000