Siemens A5E01206075 Capacitor Board – Tested G120 Spare Part

What Is the A5E01206075 Capacitor Board?

The Siemens A5E01206075 is a DC-link capacitor and power control board used in SINAMICS G120 drive systems with PM240 / PM340 power modules. It carries the repair-part designation PM240-CBO2-400V/90KW FSF+ R1 COATED, indicating a 400 V class, coated power-stage board for the FSF frame size. Its function is to store and smooth energy on the DC bus, providing the stable intermediate circuit voltage required by the IGBT inverter stage.

Unlike Control Units or I/O boards, this is a power-stage component — its condition directly affects whether the drive can enable its output and pass internal hardware checks. Supplied as a tested replacement unit, it is intended for maintenance cases where capacitor degradation or power-module fault monitoring has been isolated to this board.

Technical Specifications

Important Diagnostic Distinction: F30022 is defined as “Power unit: Monitoring U_ce” — the drive has detected an abnormal collector-emitter voltage on the power semiconductors. While a degraded DC-link capacitor board can contribute to unstable bus conditions that trigger this fault, F30022 can also originate from IGBT failure, a missing gate-drive supply, an interrupted fiber-optic cable, or a short-circuit at the power unit output. Replacing the capacitor board is appropriate when capacitor degradation is confirmed or strongly suspected; it is not a guaranteed fix for every F30022 occurrence.

When to Replace the A5E01206075 Capacitor Board

The board becomes the primary suspect under these conditions:

• F30022 after long-term storage — DC-link electrolytic capacitors degrade when a drive is left unpowered for extended periods. The drive may fail its VCE monitoring self-check on power-up and refuse to enable its output stage.
• Failed capacitor forming — if the recommended forming procedure (gradual voltage application) does not clear F30022 or abnormal bus behavior, board replacement is the next step.
• Visible capacitor degradation — bulging, leaking, or discoloration on the capacitor bank during inspection.
• F30002 / F30003 (DC-link overvoltage / undervoltage) where mains supply and braking energy have been ruled out, and capacitor condition is suspect.

Compatibility & Verification

Before ordering, confirm the following:

• Power module MLFB — the exact order number on the PM240/PM340 nameplate. Note that the repair-part label on this board reads 90KW, while the product listing references a 110 kW application; verify the MLFB rather than relying on the kW rating alone.
• Original board marking — confirm the existing board reads A5E01206075, and check whether a related number (A5E00496080 / A5E01206074 / A5E00496081) appears on the label.
• Fault history — confirm F30022 is the active fault and that capacitor forming has been attempted or ruled out where applicable.
• If uncertain, send a photo of the power module nameplate and the original board label for review before purchase.

Frequently Asked Questions

Is A5E01206075 a Control Unit or a power board?

It is a capacitor / power control board within the PM240/PM340 power module. It is not the Control Unit (CU) and not the IGBT module itself.

Does F30022 always mean this capacitor board is faulty?

No. F30022 is a VCE monitoring fault in the power module. Capacitor degradation can contribute, but IGBT failure, gate-drive supply issues, and output short-circuits can also trigger it. Confirm capacitor condition and rule out simpler causes before replacing the board.

Are A5E00496080 and A5E01206074 direct replacements?

They appear as related power-board numbers in the same G120 PM240/PM340 family. Equivalence should be verified against the power module MLFB and the original board label before ordering.