Siemens SINAMICS S120 Combi User Manual

SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
225
Encoder system connection
10
10.1
Sensor Module Cabinet-Mounted SMC20
10.1.1
Description
The Sensor Module Cabinet-Mounted SMC20 evaluates encoder signals and transmits the
speed, actual position value, rotor position and, if necessary, the motor temperature and
reference point via DRIVE-CLiQ to the S120 Combi.
The SMC20 is used to evaluate encoder signals from incremental encoders with SIN/COS (1
Vpp) or absolute encoders with EnDat 2.1, EnDat 2.2 article designation 02 or SSI.
10.1.2
Safety instructions for SMC20
WARNING
Fire through overheating due to insufficient ventilation clearances
Inadequate ventilation clearances can cause overheating with a risk for personnel due to
smoke and fire. This can also result in increased failure rates and a shorter service life for
Sensor Modules.
• Maintaining 50 mm ventilation clearances above and below the component is essential.
NOTICE
Damage when connecting an impermissible number of encoder systems
If more than the maximum permissible number of encoder systems are connected to a
Sensor Module, this will cause damage.
• Only connect one encoder system to an SMC20 Sensor Module.
Note
Diminished level of interference immunity due to equalizing currents via the electronics
ground
Make sure there is no electrical connection between the encoder system housing and the
signal li
nes and the sensor system electronics.
If this is not carefully observed, under certain circumstances the system will not be able to
reach the required interference immunity level (there is then a danger of equalization
currents flowing through the electro
nics ground).

Siemens SINAMICS S120 Combi Specifications

General

Brand	Siemens
Model	SINAMICS S120 Combi
Category	Control Unit
Language	English