Terminal Module 41; Simotion Mode - Siemens SINAMICS S120 Function Manual

Basic functions

7.23 Terminal Module 41

7.23 Terminal Module 41
Terminal Module 41 is characterized by the following features:
● Pulse encoder emulation, TTL signals according to the RS422 standard (X520)
● 1 analog input
● 4 digital inputs
● 4 bidirectional digital inputs/outputs
Terminal Module 41 (TM41) emulates incremental encoder signals (TTL) - and outputs them
via interface X520. The signals are based on speed setpoints transferred via process data
words (SIMOTION mode) or created on the actual position value of a leading encoder
(SINAMICS mode). The emulated incremental encoder signal can be used by external
hardware or a higher-level controller.
The number of pulses output (virtual pulses) per revolution can be set over a wide range.
With the additional inputs and outputs, these can be used for example to transfer analog
speed setpoints or control and status signals, for example OFF1/ON, "ready for operation" or
"fault".
7.23.1

SIMOTION mode

The SIMOTION mode of the incremental encoder emulation is set using parameter p4400 =
0. The incremental encoder emulation is based on the speed setpoint.
A speed setpoint r2060 is received via PROFIdrive telegram 3, which is interconnected to
p1155. The speed setpoint can be filtered using a (p1414.0) PT2 element that can be
activated (p1417 and p1418). The speed setpoint can be delayed with the dead time p1412.
The number of encoder pulses per revolution can be set using parameter p0408. The
distance between the zero marks and the position when enabling the A/B tracks (r4402.1) is
entered into parameter p4426 and enabled with p4401.0 = 1.
Figure 7-18
362
Function diagram encoder emulation
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions