Mitsubishi Electric MR-JE-_A Instruction Manual page 177

5. PARAMETERS
No./symbol/ Setting
name digit
PC51 Set deceleration time constant when you use the forced stop deceleration function.
RSBR Set the time per ms from the rated speed to 0 r/min.
Forced stop Setting "0" will be 100 ms.
deceleration
time constant
Servo motor speed
[Precautions]
Setting range: 0 to 20000
PC54 Set the compensation amount of the vertical axis freefall prevention function.
RSUP1 Set it per servo motor rotation amount.
Vertical axis The function will pull up an shaft per rotation amount to the servo motor rotation
freefall direction at the time of inputting forward rotation pulse for a positive value, and at the
prevention time of inputting reverse rotation pulse for a negative value.
compensation
For example, if a positive compensation amount is set when the [Pr. PA14 Rotation
amount
direction selection] setting is "1", compensation will be performed to the CW
direction.
The vertical axis freefall prevention function is performed when all of the following
conditions are met.
1) Position control mode
2) The value of the parameter is other than "0".
3) The forced stop deceleration function is enabled.
4) Alarm occurs or EM2 turns off when the servo motor speed is zero speed or less.
5) MBR (Electromagnetic brake interlock) was enabled in [Pr. PD24], [Pr. PD25],
Setting range: -25000 to 25000
PC60 _ _ _ x Motor-less operation selection
*COPD Select the motor-less operation.
Function 0: Disabled
selection C-D
1: Enabled
_ _ x _ For manufacturer setting
_ x _ _
x _ _ _ [AL. 9B Error excessive warning] selection
0: [AL. 9B Error excessive warning] is disabled.
1: [AL. 9B Error excessive warning] is enabled.
This digit is available with servo amplifier with software version B4 or later.
Rated speed
0 r/min
If the servo motor torque 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 power supply is cut, dynamic
braking will start regardless of the deceleration time constant setting.
and [Pr. PD28], and the base circuit shut-off delay time was set in [Pr. PC16].
Function
Forced stop deceleration
[Pr. PC51]
5 - 38
Initial
value
[unit]
100
[ms]
Dynamic brake
deceleration
0
[0.0001
rev]
0h
0h
0h
0h
Control mode
P S T