Encoder Track Monitoring - Siemens SINAMICS S120 Function Manual

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Encoder track monitoring

For square-wave encoders with push-pull signals, the function extension "Encoder track

monitoring" 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

Commissioning the function

Before you activate encoder track monitoring, you must set the following parameters as

Set p0405.2 = 1 to activate the function.

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.

Evaluate messages

All of the track monitoring functions can be individually evaluated. You can use both HTL as well

as TTL encoders.

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Switches to the square-wave encoder.

Sets the signal to bipolar.

Basic functions

8.21 Tolerant encoder monitoring