Original SIEMENS CIB COMM. Component 6SL3352-6TG31-5AA3 6SL33526TG315AA3 6SL3 352-6TG31-5AA3

Siemens 6SL3352-6TG31-5AA3 | SINAMICS S Replacement Control Interface Board — 500–690V 3AC Motor Module

Part Number: 6SL3352-6TG31-5AA3

Manufacturer: Siemens AG (Germany)

Product Type: Replacement Control Interface Board (CIB) — Spare Part 

Overview

The 6SL3352-6TG31-5AA3 is a SINAMICS S replacement control interface board (CIB) for 500–690V Motor Modules in SINAMICS S120 and S150 chassis drives. This board sits between the Control Unit (CU) and the drive's IGBT power stage, managing gate drive signals, current feedback, and hardware protection for the inverter section.

In the 6SL3352-6TG series, the TG prefix identifies the 690V voltage class. Each part number in the series addresses a specific Motor Module current rating. The 6TG31-5AA3 variant covers a defined current level within the 690V chassis Motor Module range — confirm against the installed unit's rating plate before ordering, as adjacent part numbers in the TG31 sub-series correspond to different output currents.

The CIB is a Siemens-designated spare part. It is ordered under the 6SL3352 market-facing number for field replacement. When the CIB fails — through IGBT gate drive fault, current measurement failure, or hardware protection circuit degradation — the complete board is replaced rather than repaired at component level.

Key Specifications

FAQ

Q1: The drive shows F30021 (IGBT overcurrent) at no-load. Could the 6SL3352-6TG31-5AA3 be the cause?

Yes. A failed current measurement circuit on the CIB produces a false current reading and triggers F30021 with no load connected. Verify by checking whether the drive's phase current display shows non-zero values at standstill.

Q2: Multiple 6SL3352-6TG31-xxx part numbers exist. How is the correct one confirmed?

The correct CIB is specific to the Motor Module's current rating. Check the Motor Module's type designation on its rating plate and cross-reference against Siemens' spare parts documentation to confirm the exact 6SL3352 number for that module variant.

Q3: Does replacing the CIB require any parameter changes or recommissioning?

No. The CIB does not hold drive parameters — all configuration resides on the Control Unit. After board replacement, power up normally. The drive reads its parameters from the CU and resumes operation without re-commissioning.

Q4: The drive has been running at high load in a 45°C ambient. Is the CIB likely to age faster under these conditions?

Yes. Elevated ambient temperature accelerates degradation of optocouplers and capacitors on the gate driver circuits. Drives running at the upper end of their thermal envelope over many years are candidates for proactive CIB replacement during a planned maintenance window.

Q5: Is the 6SL3352-6TG31-5AA3 specific to air-cooled Motor Modules, or does it also serve liquid-cooled units?

Siemens produces separate CIB variants for air-cooled and liquid-cooled Motor Module configurations. Confirm the cooling type of the installed Motor Module from its rating plate and cross-reference the spare parts list before ordering.