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Siemens D 21.4 · 2017
SINAMICS S120 drive system
Supplementary system components
Encoder system connection
7
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Overview
Motors with DRIVE-CLiQ interface
DRIVE-CLiQ is the preferred method for connecting the encoder
systems to SINAMICS S120.
Motors with DRIVE-CLiQ interface are available for this purpose,
e.g.
•
SIMOTICS M-1PH8 and SIMOTICS S-1FT7/1FK7 synchronous
motors
•
SIMOTICS M-1PH8 asynchronous motors (induction motors)
•
SIMOTICS T-1FW3 torque motors
Motors with a DRIVE-CLiQ interface can be directly connected
to the associated Motor Module using MOTION-CONNECT
DRIVE-CLiQ cables. The MOTION-CONNECT DRIVE-CLiQ
cable connection at the motor has degree of protection IP67.
The DRIVE-CLiQ interface supplies the motor encoder via the
integrated 24 V DC supply and transfers the motor encoder and
temperature signals and the electronic rating plate data, e.g. a
unique identification number and rated data (voltage, current,
torque) to the Control Unit. This means that for the various
encoder types – e.g. resolver or absolute encoder – different
encoder cables with varying permissible lengths are no longer
required; just one cable type, MOTION-CONNECT DRIVE-CLiQ
with varying permissible lengths, can be used for all encoders.
These motors simplify commissioning and diagnostics, as the
motor and encoder type are identified automatically.
Motors without DRIVE-CLiQ interface
The encoder and temperature signals of motors without
DRIVE-CLiQ interface, as well as those of external encoders,
must be connected via Sensor Modules. Sensor Modules
Cabinet-Mounted are available in degree of protection IP20
for control cabinet installation, as well as Sensor Modules
External-Mounted (degree of protection IP67).
Only one encoder system can be connected to each Sensor
Module.
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More information
Motor encoder and temperature signals must be connected
when possible to the corresponding Motor Module or Power
Module and external encoders to the Control Unit. However, the
DRIVE-CLiQ connections can also be bundled via DRIVE-CLiQ
Hub Modules.
Safety Integrated
The Safety Integrated Extended Functions of the
SINAMICS S120 drive system require suitable encoders
(see
section SIMOTICS servomotors)
.
Motors driving a load via a belt
Unfavorable material combinations generate static electricity
between the belt pulley and the belt. Electrostatic charging must
be prevented, since this can discharge via the motor shaft and
the encoder, thereby causing disturbances in the encoder
signals. One countermeasure is to manufacture belts out of
an antistatic material, for example.
© Siemens AG 2017