REXROTH DIAX04, Troubleshooting Manual

Page: 36 / 114

4-8
Description of Diagnostic Letters F... and E... DIAX04 ELS-06VRS
DOK-DIAX04-ELS-06VRS**-WA01-EN-P
To check this, it is possible to transmit the encoder signals to the analog
output of the controller. This is done by means of the following parameter
setting:
Channel 1:
P-0-0420 = 0; P-0-0421 = 3 (sine encoder 2); P-0-0422 = 1.0
Channel 2:
P-0-0423 = 0; P-0-0424 = 4 (cosine encoder 2); P-0-0422 = 1.0
By means of the input amplifiers, the 1 Vpp encoder signal is amplified to
the nominal pointer length of 0.5V * 13.3 = 6.65V (DLF) and output. With
the corresponding setting (X-Y operation) of the oscilloscope, you will
obtain the following signal shape.
Permissible signal amplitudes for sine and cosine signals
cosine signal amplitude
15
10
0
-5
-10
5
-15
-15 -10 -5 0 5 10 15
sine signal amplitude
Dg5004a1.fh7
nominal pointer length (9.2 V)
minimum pointer length > 5.0 or 1.0 V
maximum pointer length > 11.8 V
=non-permissible range
Fig. 4-4: Correct signal amplitude
Note: When an incremental encoder with square-wave signals is
used, the signals are not monitored.
Example:
Ucos = -6.5V
Usin = 6.5V
( )
pointer length = - 6.5V + 6.5V » 9.2V
2
2