Siemens SINAMICS S120 Commissioning Manual page 418

Appendix
A.6 Overview of measuring systems / encoders
HTL/TTL encoder type
The following main settings can be made for the "HTL/TTL" encoder type:
● Motor encoder
This option is selected for each encoder inserted first (measuring system 1). When you
add an additional encoder that you want to use as motor encoder, you must activate the
option there. The option is then deactivated in the first added encoder.
● Rotary
Is required for a rotary encoder.
● Linear
Is required for a linear scale.
Power supply
The following settings can be selected for the power supply of your encoder:
● 5 V
● 24 V
● Remote sense;
remote sensing ensures that a possible voltage drop along the cable is compensated.
Incremental tracks
The resolution of the encoder is determined by its "number of pulses". This value is located
on the encoder type plate and in the associated data sheet.
● Pulses per revolution
Enter the pulse number for the encoder.
● Level
Select whether you use an HTL (High Threshold Logic) or a TTL (Transistor Transistor
Logic) encoder.
● Signal
Select whether the encoder transfers a unipolar (ground-based) or a bipolar (differential)
signal. Unipolar signals lie in the range von 0 ... 5 V. Bipolar signals lie in the range von -
5 ... 5 V.
● Track monitoring
Activate this option if you want to monitor the incremental track. This can be used, for
example, to monitor for wire break. If the track monitoring is selected, the signal must not
be unipolar.
418
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1