Control Sense, Traversing Direction - Siemens SINAMICS S120 System Manual

Commissioning
4.18 Fine calibration and tuning
Note
If, in an exceptional case, these automatic calibration functions are not sufficient, then you
can manually perform the fine calibration. This fine calibration is described in the following
sections.
4.18.2

Control sense, traversing direction

General
The control sense can be reversed using the following methods:
● Inversion of the control voltage
● Inversion of the actual value
● Rotation of the scale
● Piping A → A to A → B (inversion)
Any adjustment in the hydraulic piping can be canceled by inverting the control voltage.
If the scale is rotated or attached at the wrong point (jacket or rod of the cylinder), the control
direction can be adapted by inverting the actual value.
Limitation of control voltage
The control voltage must be limited before the system is first switched on to check the
control sense (p1850, p1851).
Determining the control sense (step 1)
Note
It is not necessary to determine the control sense if the drive can already be traversed in the
JOG mode. In this case, the control sense is already set correctly
velocity controller still has to be checked
parameters must either be set to "inverted" or both to "not inverted".
Continue with Step 2
When the enable signals are set, the axis may move in an uncontrolled manner. Causes:
● Incorrect control sense of the velocity controller
– Actual value encoder mounting
– Combined connection, servo solenoid valve and cylinder
– Control voltage polarity reversed
● Incorrect control sense of the position controller
– Actual value encoder mounting
106
.
The control sense must be set identically; i.e. both
System Manual, 04/2015, 6SL3097-4BA00-0BP1
.
The control sense of the
Hydraulic Drive