Siemens 6SL3320-1TG38-1AA3 SINAMICS S120 Motor Module 800kW

Siemens 6SL3320-1TG38-1AA3 SINAMICS S120 Chassis Single Motor Module (800 kW / 810 A / 690 V)

The Siemens 6SL3320-1TG38-1AA3 is a heavy-duty, chassis-format SINAMICS S120 Single Motor Module engineered for high-demand multi-axis and single-drive industrial and marine installations. Operating on a DC link voltage range of 675 V DC to 1035 V DC, this power unit delivers a rated output of 810 A (800 kW at 690 V AC) with advanced vector, servo, and V/F open/closed-loop control.

Constructed in an IP00 open-chassis Frame Size JX format, this inverter integrates high-efficiency insulated-gate bipolar transistors (IGBTs), forced-air internal ventilation, integrated DRIVE-CLiQ communication ports, and extensive diagnostic protection routines. It is widely deployed across marine vessel propulsion systems, heavy winch drives, mining hoists, and continuous process manufacturing lines requiring high dynamic response and fault-tolerant continuous duty.

Model Details

• Manufacturer: Siemens AG
• Product Series: SINAMICS S120 Chassis
• Module Type: Single Motor Module (Inverter Unit)
• Manufacturer Part Number (MPN): 6SL3320-1TG38-1AA3
• Base Family Reference: 6SL3320-1TG38-1AA
• Frame Size: Chassis Format JX
• Cooling Topology: Internal Forced Air Cooling (AF) with built-in speed-monitored fan

Technical Specifications: Siemens 6SL3320-1TG38-1AA3

Key Features

1. High Power Density in Frame Size JX: Delivers up to 800 kW continuous base-load power (710 kW heavy overload IH) within a compact, cabinet-integrated mechanical footprint.
2. Digital DRIVE-CLiQ Interface: Direct digital coupling to SINAMICS CU320-2 control units for automatic electronic nameplate recognition, microsecond-level synchronization, and low EMI susceptibility.
3. Integrated Functional Safety: Hardware support for integrated Safety Instrumented Systems up to SIL 2 (IEC 61508) and PL d / Category 3 (ISO 13849-1), including Safe Torque Off (STO).
4. Optimized Dynamic Overload Capacity: Engineered with 136% short-term overload capability for 10 seconds and 110% overload for 60 seconds across a standard 300-second duty cycle.
5. Robust Marine & Heavy Industrial Resilience: Conformal-coated internal PCBs (Class 3C2 standard, optional 3C3) engineered to resist corrosive maritime atmospheres, vibration, and thermal cycling.

Marine & Heavy Industry Applications

• Marine Electric Propulsion: Main azimuth thruster, bow/stern tunnel thruster, and electric pod drive inverters.
• Deck Machinery & Offshore Cranes: High-torque anchor-handling winches, active heave compensation (AHC) lifting systems, and dynamic positioning platforms.
• Mining & Material Handling: Longwall conveyor drives, mine hoist skips, continuous excavators, and ball mills.
• Metals & Heavy Fabrication: Hot and cold reversing rolling mill stands, coilers, skin pass mills, and continuous casters.
• Test Benches: Multi-megawatt dynamometer test rigs for automotive, aero-engine, and heavy marine transmission validation.

Frequently Asked Questions

Can this Motor Module operate independently from a control unit?

No. As a chassis-format power unit, it requires an intelligent controller—typically a SINAMICS CU320-2 DP or CU320-2 PN—connected via high-speed DRIVE-CLiQ industrial interfaces to handle firing pulses, speed profiling, and closed-loop regulation.

What is the difference between 6SL3320-1TG38-1AA3 and liquid-cooled variants?

The 6SL3320 designates air-cooled chassis architecture requiring forced airflow through internal fans. Liquid-cooled equivalents carry the 6SL3325 prefix and use closed-loop deionized water/glycol heat exchangers for high-ambient or hermetically sealed IP54 marine cabinet spaces.

What causes an F30001 (Overcurrent) fault on this inverter chassis?

An F30001 fault indicates that the output current exceeded the permissible peak threshold. Common field root causes include motor winding insulation breakdown, output phase-to-phase short circuits, ground faults in submerged motor cables, or abrupt mechanical stall loads on winches and thruster shafts.