Vback Dir Refpt; Vback Pos Center; Omrff_Off; Ssc Svof Filter - Mitsubishi Electric M800 Series Manual

M800/M80/E80/C80 Series Alarm/Parameter Manual
16 Machine Parameters
#2137

vback dir refpt

Select the entry direction to be used as the reference position.
0: Entry direction +
1: Entry direction -
#2138

vback pos center

Set the position center point. (This is used only when continuous variable backlash is set with "#2121 vback-
lash valid".) Set a value between "#2132 vback pos1" and "#2133 vbackpos2" for the position center point.
(Note ) When the size relation of the compensation amount changeover speed and distance 1 and 2 is not
appropriate while the variable backlash compensation is valid, the followings will be applied:
If the backlash speed and distance are smaller than the compensation amount changeover speed and dis-
tance 1, both the speed and distance will be small; if larger than the compensation amount changeover
speed and distance 2, both the speed and distance will be large.
---Setting range---
-999999.999999 to 999999.999999 (mm)
#2139

omrff_off

Select whether to enable or temporarily disable the OMR-FF control when OMR-FF is valid.
0: Enable
1: Temporarily disable
When "1" is selected while OMR-FF is valid, OMR-FF can be temporarily disabled and conventional feed for-
ward control can be applied instead.
(PR) #2140

Ssc Svof Filter

Set the error detection time of command speed monitoring and feedback speed monitoring during servo
OFF.
An alarm will occur if the time, for which the speed has been exceeding the safe speed or safe rotation speed,
exceeds the error detection time set in this parameter.
If "0" is set, it will be handled as 200 (ms).
---Setting range---
0 to 9999 (ms)
#2141 chtL
Set the first-step time constant for the chopping axis when soft acceleration/deceleration is applied.
Note that, however, there may be cases where actual time constant is shorter than the set time constant,
because the time constant is automatically calculated according to the feedrate so that the acceleration rate
during acceleration/deceleration (clamp speed/chopping time constant) will be constant.
When "0" is set, "#2007 G1tL" will be valid.
Speed[mm/min]
chclsp
---Setting range---
0 to 4000 (ms)
Time[ms]
cht1
chtL
483
Variable backlash reference position selection (entry di-
rection)
Continuous variable backlash position center point
OMR-FF invalid
Speed monitor Error detection time during servo OFF
Chopping first-step time constant for soft acceleration/
deceleration
IB-1501279-H