5. PARAMETERS
5 - 38
No./symbol/
name
Setting
digit
Function
Initial
value
[unit]
Control mode
P S T
PC51
RSBR
Forced stop
deceleration
time constant
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.
Setting "0" will be 100 ms.
Forced stop deceleration
[Pr. PC51]
0 r/min
Servo motor speed
Rated speed
Dynamic brake
deceleration
[Precautions]
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.
Setting range: 0 to 20000
100
[ms]
PC54
RSUP1
Vertical axis
freefall
prevention
compensation
amount
Set the compensation amount of the vertical axis freefall prevention function.
Set it per servo motor rotation amount.
The function will pull up an shaft per rotation amount to the servo motor rotation
direction at the time of inputting forward rotation pulse for a positive value, and at the
time of inputting reverse rotation pulse for a negative value.
For example, if a positive compensation amount is set when the [Pr. PA14 Rotation
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],
and [Pr. PD28], and the base circuit shut-off delay time was set in [Pr. PC16].
Setting range: -25000 to 25000
0
[0.0001
rev]
PC60
*COPD
Function
selection C-D
_ _ _ x Motor-less operation selection
Select the motor-less operation.
0: Disabled
1: Enabled
0h
_ _ x _ For manufacturer setting
0h
_ x _ _
0h
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.
0h
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