Siemens SINAMICS S120 Function Manual page 355

The runtime of the encoder actual position value up to the pulse encoder emulation can be
compensated using the dead time compensation with parameter p4421.
If p4422 = 1, input signal p4420 is inverted.
The zero mark signal for the TM41 is generated from the zero position of the leading
encoder. Parameters p0493, p0494 and p0495 apply to the generation of the zero position of
the leading encoder.
Special features
● PROFIdrive telegram 3
● Dead time compensation (p4421)
● The pulse number ratio between the encoder to be emulated and the emulating TM41
● Only one Encoder Data Set (EDS) can be interconnected to precisely one TM41.
● When the same EDS is interconnected to an additional TM41, only the actual position
● A TM41 can neither emulate the zero mark position nor emulate the actual position value
● A TM41 cannot use external zero marks of the encoder to be emulated.
● Using p4401.1 = 1, the zero position is synchronized with the zero mark of the absolute
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
can be set. For each encoder revolution, in the encoder emulation, more or fewer pulses
are output than were read-in from the original encoder.
value can be emulated – but not the zero mark position.
of another TM41.
encoder. If you have to remain compatible with older firmware versions, for example for
use in an existing control system, set parameter p4401.1 = 0.
– p4401.1 = 0: No synchronous zero marks
– p4401.1 = 1: Zero mark synchronization enabled
– As soon as the absolute encoder passes the zero position of the absolute position,
then the zero pulse is output via X520.
Basic functions
6.23 Terminal Module 41
353