Encoder Track Monitoring - Siemens SINAMICS S120 Function Manual

Basic functions
7.19 Tolerant encoder monitoring
Commissioning
The tolerant encoder monitoring is commissioned using parameters p0437 and r0459.
r0458.12 = 1 indicates whether your hardware supports the expanded encoder properties.
Note
• You can only parameterize the tolerant encoder monitoring functions when
commissioning the encoder. The encoder monitoring parameters cannot be changed
while the drive is running!
• The functions can only be parameterized using the expert list of STARTER.
• The functions described in the following apply to SMC30 modules and to Control Units
with internal encoder evaluation.
7.19.1

Encoder track monitoring

For square-wave encoders with push-pull signals, this function monitors encoder tracks
A/B ↔ -A/B, as well as R ↔ -R. The encoder track monitoring monitors the most important
properties of the signals (amplitude, offset, phase position).
Commissioning
The following parameters must be set as requirement for track monitoring:
● p0404.3 = 1 switches to the square-wave encoder
● p0405.0 = 1 sets the signal to bipolar
Set p0405.2 = 1 to activate track monitoring.
If you selected your encoder from the list of parameter p0400, then the values above are
pre-selected and cannot be changed (also refer to the information on p0400 in the
SINAMICS S120/S150 List Manual).
Deactivating track monitoring
If encoder track monitoring is activated, you can deactivate the function by setting
p0437.26 = 1.
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Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions