Siemens 6SL3330-6TG38-8AA3 SINAMICS S120 Smart Line Module

Description

The Siemens 6SL3330-6TG38-8AA3 is a chassis-format Smart Line Module within the SINAMICS S120 drive system. This unregulated rectifier/regenerative unit supplies power to a common DC link, allowing connected motor modules to draw electrical energy. It features regenerative feedback capabilities, enabling it to return braking kinetic energy back into the three-phase supply network to optimize overall plant energy efficiency. Communication and control integration within the SINAMICS ecosystem are handled through integrated Drive-CLiQ digital interfaces.

Features

• Infeed and regenerative feedback capabilities to the supply network
• Common DC link supply for multi-axis configurations
• Drive-CLiQ communication interfaces for auto-configuration and diagnostics
• Integrated fan for internal forced-air cooling
• Open chassis design optimized for control cabinet integration

Applications

• Multi-axis drive configurations in metal production and rolling mills
• High-power test stands and dynamometers
• Main drives for paper, textile, and printing machines
• Hoists, cranes, and materials handling systems with high braking energy requirements
• Large-scale industrial pumps, fans, and compressors

Technical Specifications

Connections / Interfaces

Installation Guidelines

• Ensure the module is mounted vertically inside a suitable IP20 or higher enclosure to comply with safety standards, as the bare chassis is rated IP00.
• Maintain minimum clearance distances at the top and bottom of the unit as specified in the manual to facilitate proper airflow and prevent thermal derating.
• Connect a low-impedance Protective Earth (PE) conductor directly to the chassis ground stud to mitigate electromagnetic interference (EMI).
• Route power cables (AC input and DC link) separately from low-voltage control and Drive-CLiQ communication lines.
• Install external line reactors and semiconductor fuses rated specifically for this module to protect against overcurrent and line disturbances.

FAQ

What is the primary function of a Smart Line Module?

It rectifies the incoming three-phase AC line voltage into a stable DC link voltage while allowing excess braking energy to feed back into the power grid.

Does this module include a built-in control unit?

No, it operates as a power component and requires a separate SINAMICS Control Unit, such as a CU320-2, via a Drive-CLiQ connection.

What is the ingress protection rating of this unit?

The module has an IP00 rating and must be installed within a protective electrical cabinet.

How does the unit handle internal heat dissipation?

It utilizes an integrated forced-air cooling fan that requires a continuous, unobstructed airflow through the chassis.

What AC supply voltage range can this module accept?

It accepts a three-phase AC line input between 500 V and 690 V at a frequency of 50/60 Hz.

Does this unit support regulated DC link voltage?

No, the DC link voltage is unregulated and varies proportionally with the incoming AC line voltage.

What size framework does this module belong to?

This module utilizes the Siemens frame size HX chassis configuration.

Can this unit be used in multi-axis setups?

Yes, it is specifically designed to supply a common DC link that feeds multiple independent Motor Modules.

What interface is used for communication with the main controller?

The system uses the proprietary Siemens Drive-CLiQ digital interface protocol.

Is an external line reactor required for operation?

Yes, a matching line reactor is necessary to ensure correct commutation and line-harmonics reduction.

Can the unit be mounted horizontally?

No, it must be mounted vertically to allow the forced air cooling system to operate efficiently.

What happens if the internal fan fails?

The drive system will detect a thermal fault via internal sensors and safely trip to protect the power electronics from overheating.