Mitsubishi Electric MELSEC-L Series, Руководство пользователя

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Chapter 12 Expansion Control
Speed during torque control mode
The speed during the torque control mode is controlled with "
Cd.146
Speed limit
value at torque control mode
". At this time, "Speed limit" ("
Md.108
Servo status
" (low-
order buffer memory address): b4) turns ON.
Buffer memory address (Low-order)
LD77MS2/LD77MS4 LD77MS16
Md.108
Servo status
: b4
876+100n 2476+100n
n: Axis No.-1
"
Cd.146
Speed limit value at torque control mode
" is set to a positive value regardless
of the rotation direction. (Controlled by the same value for forward and reverse
directions.)
In addition, "
Cd.146
Speed limit value at torque control mode
" is limited with "
Pr.8
Speed limit value
". If the speed exceeding the speed limit value is set, the warning
"Speed limit value over" (warning code: 501) occurs, and the operation is
controlled with the speed limit value.
The acceleration/deceleration processing is invalid for "
Cd.146
Speed limit value at
torque control mode
".
POINT
The actual motor speed may not reach the speed limit value depending on the
machine load situation during the torque control.
Current feed value during torque control mode
"
Md.20
Current feed value
", "
Md.21
Machine feed value
" and "
Md.101
Real current
value
" are updated even in the torque control mode. If the current feed value
exceeds the software stroke limit, the error "Software stroke limit +" (error code:
507) or "Software stroke limit -" (error code: 508) occurs and the operation
switches to the position control mode. Invalidate the software stroke limit to
execute one-way feed.