
13.MEASUREMENT B-63783EN-1/01
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13.5.4 Torque Limit Skip
General
When a move command following G31P99 (or G31P98) is executed
with the torque limit(*1) of a servo motor overridden, cutting feed can
be performed in the same manner as when linear interpolation (G01) is
applied. During movement with this move command, when the torque
of the servo motor attains the torque limit (the servo motor torque limit
overridden) because of, for example, pressure against the movement, or
when a skip signal (or a high-speed skip signal) is input, the remaining
movement is canceled, and the next block is executed. (The operation
that cancels the remaining movement and executes the next block is
hereinafter called a skip operation.)
The torque limit of a servo motor can be overridden using one of the
following methods:
(1) Specify the torque limit override command in the PMC
window.
(2) In the block containing the G31P99 (or G31P98) command,
specify address Q.
*1 : The torque limit of a servo motor is set according to the motor
type setting.
- Conditions for skip operation
CommandCondition
G31P98 G31P99
When torque limit is attained O O
When skip signal is input X O
O : Skip operation is performed.
X : Skip operation is not performed.
- Torque limit skip operation
When a torque limit command is issued to a servo motor, then a
movement is made on the specified axis to cause pressure against
something like a prepared part, the torque limit skip function performs
a skip operation as the servo motor attains the torque limit. A skip
operation is performed when the servo motor detects the torque limit.
Therefore, unlike the ordinary skip function, the torque limit skip
function does not require the input of a skip signal using a device such
as a sensor.