Padu8 Diagnosis Module (Option G66); Pulse Distributor For Splitting Speed Encoder Signal (Option G70); Optical Bus Terminal (Obt) For Profibus (Option G71); Indicator Lamps In The Cabinet Door (Option K20) - Siemens 6SL3845-2NN41-8AD2 Operating Instructions Manual

Medium-voltage drive
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Description
3.6 Description of options
The Terminal Module TM15 comprises the following elements:
● 24 bidirectional digital inputs and outputs (isolation in three groups of eight channels).
● 24 green status LEDs for indicating the logical signal status of the relevant terminal
3.6.6

PADU8 diagnosis module (option G66)

The PADU8 diagnosis module can read up to eight analog and eight digital signals from the
control and monitoring module in the power unit. The PADU8 makes these signals available for
further processing for diagnostic purposes. The typical acquisition cycle of all channels in
parallel is 1 ms which allows rapid signal characteristics to be acquired and diagnosed
simultaneously. The acquired values are transferred to an evaluation system (e.g. notebook)
either via fiber-optic conductors or via an RJ11 socket. All the output data is available on both
the fiber optic cable output and the RJ11 socket simultaneously. This means that
measurements can be taken on the RJ11 socket without disrupting data transfer via the fiber
optic cable.
With this option, a PADU8 diagnosis module is integrated in each control section.
3.6.7

Pulse distributor for splitting speed encoder signal (option G70)

This pulse distributor is capable of splitting the encoder signal. This possibility is used, for
example, when speed list values from an HTL incremental encoder are required at various
points for measured-value acquisition and processing. The pulse distributor converts the HTL
incremental encoder signals to two separate RS422 signal outputs. The inputs are electrically
isolated from the outputs. The connection is made by means of 8-pin terminal blocks.
3.6.8

Optical bus terminal (OBT) for PROFIBUS (option G71)

PROFIBUS OBT is a network component for use in optical PROFIBUS DP fieldbus networks.
The individual bus nodes are connected using two-phase plastic fiber-optic cables. This also
provides an automatic isolation. Potential differences in large-scale plants do not have any
influences. The OBT has the following interfaces:
● Channel 1 is an electrical RS485 interface provided as a 9-pin SUB-D socket. This interface
● Channels 2 and 3 are the optical interface. These take the form of a duplex socket and can
3.6.9

Indicator lamps in the cabinet door (option K20)

This option provides five lamps in the cabinet door of the control section that signal the
operating status.
● Fault (red)
● Alarm (yellow)
48
establishes the connection to the drive control.
be used to provide a connection to higher-level control systems.
SINAMICS SM150 6SL3845-2NN41-8AD2
Operating Instructions Rev.201910281310 EXAMPLE

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