HEIDENHAIN TNC 335 Technical Manual - Manual (Page 161)

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TNC 360 3 Servo Positioning of the NC Axes 8/95
3.3.3 Offset adjustment with integral factor
The integral factor MP1080 also results in an automatic offset adjustment. It is only effective in the
stop condition (see block diagram of control loop).
According to the size of the factor the offset voltage will be reduced quickly or slowly.
Even a small amount of play in the drives can lead to instability in the control loop. An integral factor
of 0 is entered in this case.
Voltage
step
(0.6 mV)
t [s]
2
4
6
8
10
1 2 3
MP1080 ·s
a
= 1000
MP1080 ·s
a
= 500
MP1080 ·s
a
= 150
MP1080 Integral factor
Input value: 0 to 65535
MP1080.0 Integral factor X axis
MP1080.1 Integral factor Y axis
MP1080.2 Integral factor Z axis
MP1080.3 Integral factor 4th axis