K48, Smc20 Sensor Module Cabinet-Mounted For Sin/Cos Incremental Encoder Or Endat Absolute Encoder; General Information; Safety Information - Siemens SINAMICS S120 Equipment Manual

Options

8.7 K48, SMC20 Sensor Module Cabinet-Mounted for sin/cos incremental encoder or EnDat absolute encoder

8.7 K48, SMC20 Sensor Module Cabinet-Mounted for sin/cos incremental
encoder or EnDat absolute encoder
8.7.1

General information

Availability of option
This option is available for the following S120 Cabinet Modules:
● Motor Module in chassis format
● Booksize Cabinet Kit
Description
The SMC20 Sensor Module is used to simultaneously detect the actual motor speed and the
path length. The signals emitted by the incremental encoder are converted here and made
available to the closed-loop controller via the DRIVE-CLiQ interface for evaluation purposes.
The following encoders can be connected to the SMC20 Sensor Module:
● Incremental encoder sin/cos 1 V
● EnDat and SSI absolute encoders
The motor temperature can also be detected using KTY84-130 temperature sensors or PTC
thermistors.
The maximum encoder cable length is 100 m.
Note
The Booksize Cabinet Kit with Double Motor Module has two of these Sensor Modules built
in.
8.7.2

Safety information

NOTICE
Only one measuring system can be connected to each Sensor Module.
Note
There must be no electrical connection between the measuring system housing and the
measuring system electronics (this requirement is fulfilled for most encoder systems).
If this is not carefully observed, under certain circumstances the system will not be able to
reach the required noise immunity (there is then a danger of equalization currents flowing
through the electronic ground).
338
pp
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A