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01.93
8 Spindle/PLC Interface (DB 31)
8.3 Signals to spindle
8.3
Signals to spindle
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CHANGE GAIN FACTOR
DW K + 1, bit 15
1 signal:
For position control of the spindle in the positioning mode, the gain of the
position controller is calculated from the gear stage-dependent gain factor
multiplied by the factor for the gain change (MD 469*).
0 signal:
For position control of the spindle in the positioning mode, the gain of the
position controller is determined directly by the gear stage-dependent gain
factor.
Notes:
•
This signal is valid only for spindles that are controlled by 32-bit servo CPUs.
•
The individual factors are determined by machine data:
– MD 435* to 442*
"Gain factor" for the position controller (for 8 gear stages)
– MD 469*
"Factor for gain change"
•
With some drive actuators a change in the standardization of the analog set speeds in the
actuator can achieve steadier zero speed behaviour of the spindle in conjunction with
position control. This change must be taken into account in the control by changing the
gain factor.
•
The standardization change in the drive actuator is made by a terminal signal. This signal
must always be set at the same time as the CHANGE GAIN FACTOR interface signal. It
is sensible to set the signals conditional on the SPINDLE STOP interface signal.
•
The gain factor change must not be activated at higher speeds. The magnitude of the
transmitted set speeds must always be less than 10 V.
©
Siemens AG 1991 All Rights Reserved 6ZB5 410-0HE02
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SINUMERIK 880 (PJ)