
1.AXIS CONTROL B-63783EN-1/01
- 122 -
1825 Servo loop gain for each axis
[Input type] Parameter input
[Data type] Integeraxis
[Unit of data] 0.01/sec
[Valid data range] 1 - 9999
Specify the position control loop gain for each axis.
For a machine which performs linear or circular interpolation (cutting),
specify the same value for all axes. For a machine which requires only
positioning, different values may be specified for different axes. The
larger the specified loop gain, the higher the position control response.
If the loop gain is too large, the servo system becomes unstable.
The relationships between the positioning deviation (amount of pulses
stored in the error counter) and feedrate are expressed as follows:
Positioning deviation = feedrate/(60*loop gain)
Unit: Positioning deviation mm, inches, or deg
Feedrate mm/min, inches/min, or deg/min
loop gain 1/sec
1827 Valid area for each axis
[Input type] Parameter input
[Data type] Integeraxis
[Unit of data] detection unit
[Valid data range] 0 - 99999999
Specify the valid area for each axis.
When the deviation of the machine position and specified position
(absolute positioning deviation) does not exceed the valid area, it is
assumed that the machine reaches the specified position, that is, it
moves correctly.
1828 Positioning deviation limit for each axis while it is moving
[Input type] Parameter input
[Data type] Integeraxis
[Unit of data] detection unit
[Valid data range] 0 - 99999999
Specify the positioning deviation limit for each axis while it is moving.
If the positioning deviation limit of the axis is exceeded while the axis is
moving, a servo alarm is issued and the machine stops immediately
(same as an emergency stop).
Generally, specify a value larger than the positioning deviation in the
rapid traverse mode.