S120 Combi Power Modules; Introduction; Description - Siemens SINAMICS S120 Combi Manual

S120 Combi Power Modules

4.1

Introduction

4.1.1

Description

The SINAMICS S120 Combi
The S120 Combi is a Power Module with integrated infeed, Motor Modules (inverter) for 3 or
4 axes and a TTL encoder evaluation for the spindle. The S120 Combi is available in the
following versions for various current ratings:
● 3 axes Power Module with infeed, spindle and 2 feed axes
● 4 axes Power Module with infeed, spindle and 3 feed axes
The Power Modules are cooled using external air cooling that employs through-hole
technology. The required fan unit is optionally available. A fan solution on the customer side
with comparable rated data is possible.
The S120 Combi is capable of infeed/energy recovery The infeed provides the integrated
Motor Modules with an uncontrolled DC voltage.
In the infeed mode regarding the current and voltage waveforms, the infeed has a typical
characteristic of a 6-pulse diode rectifier bridge. In the energy recovery mode, the current
waveform is a square wave.
The energy recovery is switched in depending on the power that is fed back. Energy
recovery is deactivated when the infeed is operating under no-load conditions.
The S120 Combi is suitable for direct operation on TN, IT and TT line supplies.
Fault protection for the motor circuit
The electronic overcurrent trip complies with the requirements laid down in IEC 60364-3-
2:2005/AMD1:- Section 411 for protection against electric shock.
● Observe the installation specifications provided in this manual.
● Observe the applicable installation standards.
● Ensure the continuity of the protective conductor.
Controlling the motor holding brake
The S120 Combi has an integrated brake control function for a motor holding brake. The
motor holding brake is connected at terminal X11. The assignment of the motor holding
brake to the feed axes of the S120 Combi can be freely parameterized using the software.
Motor holding brakes up to 1 A are controlled.
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
4
59