K46, Smc10 Sensor Module Cabinet-Mounted For Resolvers; General Information - Siemens SINAMICS S120 Equipment Manual

8.6

K46, SMC10 Sensor Module Cabinet-Mounted for resolvers

8.6.1

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 SMC10 Sensor Module is used for detecting the actual motor speed and the rotor
position angle. The signals emitted by the resolver 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 SMC10 Sensor Module:
● Resolver, 2-pole
● Resolver, multi-pole
The motor temperature can also be detected using KTY84-130 temperature sensors or PTC
thermistors.
Table 8- 4
Transmission ratio of the resolver
Excitation voltage on the SMC10 when ü = 0.5
Amplitude monitoring threshold (secondary tracks) of the SMC10
The maximum encoder cable length is 130 m.
The excitation voltage is 4.1 V
The excitation frequency is synchronized to the current-controller clock cycle and lies in the
range between 5 kHz and 10 kHz.
The ratio between ohmic resistance R and inductance L determines whether the resolver
can be evaluated with the SMC10 (see diagram below).
Note
The Booksize Cabinet Kit with Double Motor Module has two of these Sensor Modules built
in. It must be ensured that the installation of the encoder ground connection is insulating.
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
8.6 K46, SMC10 Sensor Module Cabinet-Mounted for resolvers
SMC10 specification
and cannot be parameterized.
rms
Options
Value
ü = 0.5
4.1 V
rms
1 V
rms
333