Siemens Igd Trigger Board 6SE7024-7ED84-1HF5 6SE70247ED841HF5 6SE7O24-7ED84-1HF5 6SE7 024-7ED84-1HF5

Siemens 6SE7024-7ED84-1HF5 | SIMOVERT MASTERDRIVES PEU Power Supply Board — 47A, 380–460V 3AC

Part Number: 6SE7024-7ED84-1HF5

Manufacturer: Siemens AG (Germany)

Product Type: PEU — Power Electronics Unit / Power Supply Board (Spare Part)

Product Range: SIMOVERT MASTERDRIVES 6SE70 Series 

Overview

The 6SE7024-7ED84-1HF5 is the PEU (Power Electronics Unit) power supply board for Siemens SIMOVERT MASTERDRIVES 6SE7024-7ED series chassis drives — the inverter and converter units rated at 47A output current on a 380–460V three-phase AC supply.

This board is the internal power supply that generates the regulated auxiliary voltages required by the drive's control electronics, gate drive circuits, and cooling fan control.

Without a functional PEU, the drive's electronics cannot be energised, and the unit will not respond at power-on regardless of the state of its main AC supply.

The SIMOVERT MASTERDRIVES 6SE7024-7ED series represents the 47A nominal current rating within the compact-plus and chassis format range of SIMOVERT products operating on the standard 380–460V industrial network.

At 400V supply, 47A corresponds to approximately 22kW of inverter output capacity. These drives control induction and synchronous motors in demanding industrial applications — material handling conveyors, compressor drives, centrifuge controls, test stands, and process drives across numerous sectors.

The HF5 designation identifies the fifth revision in the HF series for this board.

Each successive HF revision incorporated component updates and reliability improvements while maintaining full physical and functional compatibility with the drive assembly.

The HF5 is the current recommended spare regardless of which earlier HF revision was originally installed.

Key Specifications

PEU Function in the SIMOVERT MASTERDRIVES

The SIMOVERT MASTERDRIVES chassis drive separates the high-power electronics (the rectifier bridge, DC bus capacitors, IGBT inverter, and heatsink) from the control electronics (the CUD vector control board, option boards, and their associated housekeeping circuits).

The two sections require different supply voltages: the control electronics need regulated low-voltage DC rails, not raw rectified AC.

The 6SE7024-7ED84-1HF5 PEU board is the bridge between these sections. It derives power from the drive's DC bus or auxiliary AC supply and generates the regulated rails — typically including 5V, 15V, 24V, and gate drive bias supplies — that the control electronics depend on.

It also manages the internal relay that controls the power supply sequencing, ensuring that the drive's electronics are properly energised before motor control signals are enabled.

The board also generates the isolated supply for the PMU (Parameter Assignment Unit) and any option boards installed in the electronics box, such as communication boards (CBx), sensor boards (SBx), or technology boards (T400).

Fault Diagnosis — PEU Failure Symptoms

A failing or failed PEU board produces a specific set of symptoms that help distinguish it from faults in other drive sub-systems.

Complete non-response at power-on is the most common PEU failure mode. The drive appears completely dead — no display on the PMU, no fan activity, no relay actuations.

The main AC supply is confirmed present at the drive input, but nothing else happens.

Intermittent power cycling is another pattern.

The drive powers up correctly and runs for a period, then loses its control power supply. The drive shuts down, and depending on the internal fault logic, may attempt to restart or remain in a latched-off state.

This is often caused by a failing electrolytic capacitor in the PEU's switching power supply circuit.

When diagnosing, distinguish PEU failure from main AC supply problems by checking the DC bus voltage — if the DC bus is established (the pre-charge capacitors have charged), the rectifier section is working, which points the fault to the PEU rather than the supply or main rectifier.

Revision HF5 — Interchangeability

The 6SE7024-7ED84-1HF5 is interchangeable with all earlier HF revisions (HF3, HF4) in the same drive type. Siemens designed the HF series with complete backward compatibility — same physical form factor, same connector layout, same electrical interface.

Board replacement does not require any parameter changes or recommissioning steps specific to the board revision.

This simplifies spares management. Sites running 6SE7024-7ED series drives from different production dates — and therefore potentially with different original HF revisions — can stock the current HF5 as a single universal spare covering all variants.

FAQ

Q1: The SIMOVERT MASTERDRIVES 6SE7024-7ED drive is completely dead after a power cycle — no display, no fan, no activity at all. The AC supply at the input terminals is confirmed correct. Is the 6SE7024-7ED84-1HF5 the most likely cause?

With confirmed AC supply and complete drive non-response, the PEU board is the primary suspect.

First verify the DC bus voltage at the drive's test points — if the bus has charged (indicating the rectifier section is operating), the fault is localised to the PEU's output side or the control electronics it feeds.

If the DC bus has also not charged, the issue may be pre-charge related, and the PCU pre-charge board or fuses should be checked before concluding the PEU is faulty.

Q2: The drive shows intermittent loss of the control display — the PMU goes blank for a few seconds, then recovers — while the motor continues to run. Is the 6SE7024-7ED84-1HF5 involved?

Intermittent PMU blanking while the motor continues running is characteristic of a failing PEU internal power supply — specifically the rail that powers the control electronics and PMU is dropping briefly before recovering.

This is often caused by an aging electrolytic capacitor in the PEU switching supply. The symptom will worsen over time. Replace the 6SE7024-7ED84-1HF5 board before the failure becomes permanent and causes a full drive shutdown.

Q3: Can the HF5 revision board be installed in a drive that originally came with the HF3 revision, without any reconfiguration?

Yes — HF3, HF4, and HF5 are fully interchangeable. The HF revision number indicates component-level updates within the same functional design.

Physical dimensions, connector positions, and electrical interface are identical. 

No reconfiguration, parameter change, or commissioning step is required when moving between HF revisions.

Q4: The 6SE7024-7ED series drive has been in service for 12 years. The PEU has just failed. Are there other components that should be inspected while the drive is open for PEU replacement?

At 12 years, the DC bus electrolytic capacitors are approaching or at their typical service life limit. While the drive is open for PEU replacement, measure the capacitors' capacitance and ESR to assess their condition.

Also inspect the cooling fan — at this age, bearing wear is common. Check the thermal grease condition on the heatsink interface.

A preventive replacement of the capacitors and fan during the same maintenance window avoids a second unplanned shutdown within a short timeframe.

Q5: Is the 6SE7024-7ED84-1HF5 available as a new part, or only through the aftermarket?

The SIMOVERT MASTERDRIVES 6SE70 product family has been discontinued. New boards directly from Siemens are no longer available through standard commercial channels. The aftermarket — specialist industrial drive repair and exchange service companies — is the primary supply source.

These suppliers hold tested, certified-functional boards with warranty coverage. 

For sites operating multiple 6SE7024-7ED drives, holding a spare 6SE7024-7ED84-1HF5 on site is strongly recommended given the potential for multi-week sourcing lead times.