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Siemens D 21.4 · 2017
SINAMICS S120 drive system
Supplementary system components
Encoder system connection
> SME20/SME25 Sensor Modules External
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Overview
SME20/SME25 Sensor Module External
SME20/SME25 Sensor Modules External are encoder evaluation
units for machine encoders (direct measuring systems).
The devices are designed with IP67 degree of protection. This
means that the units can be installed outside the control cabinet
near the machine encoder.
The following encoder signals can be evaluated:
•
Incremental encoder sin/cos 1 V
pp
without rotor position track
(C and D tracks)
•
Absolute encoder EnDat 2.1
•
SSI absolute encoder
1)
with incremental signals sin/cos
1 V
pp
(firmware V2.4 and later)
Using adapter cable 6FX8002-2CA88-..., it is possible to
connect a motor with a 17-pole circular encoder connector to
the 12-pole circular connector of the SME20.
•
KTY/Pt1000/PTC temperature sensors can be used to
evaluate the motor temperature (only possible with SME20).
•
The Sensor Module is only suitable for motors without absolute
track signals (C and D tracks), e.g.:
- Synchronous motors with pole position identification
(SIMOTICS L-1FN/T-1FW/M-1FE)
- Asynchronous
motors (induction motors)
(SIMOTICS M-1PH)
SME20/SME25 Sensor Modules External evaluate the encoder
signals and convert the information obtained to DRIVE-CLiQ.
Neither motor nor encoder data are saved in the SME20/SME25.
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Design
SME20/SME25 Sensor Modules External feature the following
connections and interfaces as standard:
•
1 encoder connector via circular plug
•
1 DRIVE-CLiQ interface with integrated 24 V DC electronics
power supply from the Control Unit or Motor Module
•
1 PE (protective earth) connection
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Integration
SME20/SME25 Sensor Modules External communicate with a
Control Unit via DRIVE-CLiQ.
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Selection and ordering data
Description
Article No.
SME20 Sensor Module External
For incremental measuring systems
Without DRIVE-CLiQ cable
6SL3055-0AA00-5EA3
SME25 Sensor Module External
For absolute measuring systems
Without DRIVE-CLiQ cable
6SL3055-0AA00-5HA3
Accessories
Adapter cable
2)
For SME20, for connecting motors with
17-pole encoder connector, with encoders,
without C and D tracks
6FX8002-2CA88-
....
1)
For SME25, only encoders with 5 V supply voltage.
2)
For length code, see section MOTION-CONNECT connection systems.
© Siemens AG 2017