Mitsubishi Electric C70 Setup Manual page 285

MITSUBISHI CNC
Appendix 1 Explanation of Parameters
【#2253】 SV053 OD3 Excessive error detection width in special control
Set the excessive error detection width when servo ON in a special control (initial absolute position
setting, stopper control and etc.).
When "0" is set, excessive error detection will not be performed when servo ON during a special
control.
---Setting range---
0 to 32767 (mm)
However, when SV084/bitC=1, the setting range is from 0 to 32767 (μm).
【#2254】 SV054 ORE Overrun detection width in closed loop control
Set the overrun detection width in the full-closed loop control.
When the gap between the motor side encoder and the linear scale (machine side encoder) exceeds
the value set by this parameter, it will be judged as overrun and "Alarm 43" will be detected.
When "-1" is set, if the differential velocity between the motor side encoder and the machine side
encoder exceeds the 30% of the maximum motor speed, it will be judged as overrun and "Alarm 43"
will be detected.
When "0" is set, overrun will be detected with a 2mm width.
For linear servo/direct-drive motor system
Not used. Set to "0".
---Setting range---
-1 to 32767 (mm)
However, when SV084/bitD=1, the setting range is from -1 to 32767 (μm).
【#2255】 SV055 EMGx Max. gate off delay time after emergency stop
Set the time required between an emergency stop and forced READY OFF.
Set the maximum value "+ 100ms" of the SV056 setting value of the servo drive unit electrified by the
same power supply unit.
When executing the vertical axis drop prevention, the gate off will be delayed for the length of time
set at SV048 even when SV055's is smaller than that of SV048.
Related parameters: SV048, SV056
---Setting range---
0 to 20000 (ms)
【#2256】 SV056 EMGt Deceleration time constant at emergency stop
Set the time constant used for the deceleration control at emergency stop.
Set the time required to stop from rapid traverse rate (rapid).
The standard setting value is EMGt≤G0tL×0.9.
However, note that the standard setting value differs from the above-mentioned value when the
setting value of "#2003:smgst Acceleration and deceleration modes bit 3-0:Rapid traverse
acceleration/deceleration type" is 8 or F. Refer to Instruction Manual of the drive unit (section
"Deceleration Control") for details.
Related parameters: SV048, SV055
---Setting range---
0 to 20000 (ms)
【#2257】 SV057 SHGC SHG control gain
When performing the SHG control, set to SV003(PGN1)×6.
When not using the SHG control, set to "0".
When using the OMR-FF control, set to "0".
Related parameters: SV003, SV004
---Setting range---
0 to 1200 (rad/s)
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