Checking The Linear Motor By Taking Measurements - Siemens SINAMICS S120 Commissioning Manual

Commissioning
2.13 Commissioning linear motors (servo)
Measuring systems from Renishaw (e.g. RGH22B)
As the reference mark for the Renishaw RGH22B has a direction-dependent position, with
control cables BID and DIR, the encoder must be parameterized, so that the reference mark
is only output in one direction.
The direction (positive/negative) depends on the geometrical arrangement at the machine
and the reference point approach direction.
Table 2- 18
Signal
BID
DIR
+5 V
0 V
The counting direction of the measuring system is positive if the sensor head moves relative
to the gold band in the cable outlet direction.
Figure 2-41
Note
If the sensor head is mechanically connected to the primary section, the cable outlet
direction must be different. Otherwise, invert the actual value.
2.13.6

Checking the linear motor by taking measurements

Why make measurements?
If the linear motor was commissioned according to the relevant instructions, and unexplained
fault messages still occur, then all of the EMF signals must be checked using an
oscilloscope.
Checking the phase sequence U-V-W
For primary sections connected in parallel, the EMF_U from motor 1 must be in phase with
the EMF_U from motor 2. The same is true for EMF_V and EMF_W.
It is absolutely necessary that this is checked by making the appropriate measurements.
164
Overview of signals
Cable color Circular connector
12-pin
Black Pin 9
Orange Pin 7
Brown Pin 12
White Pin 10
Determining the counting direction for measuring systems from Renishaw
+5 V
Reference marks in
both directions
Positive directions
Commissioning Manual, (IH1), 01/2012, 6SL3097-4AF00-0BP2
Connected to
0 V
Reference marks in
one direction
Negative direction
Commissioning Manual