SIEMENS IGD TRIGGER Board 6SE7027-2ED84-1HF5 6SE70272ED841HF5 6SE7O27-2ED84-1HF5 6SE7 027-2ED84-1HF5

6SE7027-2ED84-1HF5 | Siemens SIMOVERT MASTERDRIVES PEU Power Controller Module — 72A / 3-Phase / 380–460V AC / Replacement Power Electronics Unit

PEU — The Replaceable Power Core of the MASTERDRIVES Drive

The PEU (Power Electronics Unit) is the field-replaceable module containing the complete inverter power stage of the SIMOVERT MASTERDRIVES drive. At 72A and 380–460V AC, the 6SE7027-2ED84-1HF5 serves the mid-range MASTERDRIVES inverter drives — above the 47A class and approaching the larger chassis-type units.

The PEU integrates all of the drive's power conversion hardware:

Rectifier section: The three-phase input rectifier bridge that converts the 380–460V AC mains into the DC bus voltage. At 72A output, the DC bus typically operates at 540–650V DC under normal supply conditions.

DC bus capacitor bank: The electrolytic capacitor bank that filters the rectified DC and provides the energy reservoir for the inverter's switching operation. The capacitor bank size scales with the rated output current.

IGBT inverter section: The three-phase IGBT transistor bridge that switches the DC bus voltage at high frequency to produce the variable-frequency, variable-voltage output that drives the AC motor.

Key Specifications

72A in the MASTERDRIVES Power Range

At 72A, the 6SE7027-2ED84-1HF5 PEU covers an important mid-range position in the MASTERDRIVES output current spectrum:

Motor power at 72A / 380–460V: 72A at 380–460V AC corresponds to approximately 37–45kW of three-phase motor power — the power class serving mid-to-large industrial fans, pumps, conveyors, and machine tool main drives.

Comparison with adjacent ratings: The MASTERDRIVES PEU family also includes 34A (6SE7023-4EC84-1HF3, covering approximately 15kW), 47A, and larger 92A/146A class modules — the 72A class fills the gap between the 47A smaller drives and the 92A larger chassis drives.

Application Scenarios

MASTERDRIVES inverter power stage fault — 72A drive: A SIMOVERT MASTERDRIVES drive rated at 72A develops power electronics failures — IGBT short circuit, DC bus capacitor failure, or rectifier fault. The control unit is undamaged. The 6SE7027-2ED84-1HF5 PEU module is replaced, restoring the complete inverter power stage without requiring control unit replacement.

Planned power electronics renewal: A facility operating 72A MASTERDRIVES drives proactively replaces the 6SE7027-2ED84-1HF5 PEU module after a defined operational period — renewing the capacitors and IGBT modules before in-service failure can cause production downtime.

FAQ

Q1: What is the relationship between the 6SE7027-2ED84-1HF5 PEU and the drive's control unit?

The MASTERDRIVES system separates into two independently replaceable layers. The PEU (6SE7027-2ED84-1HF5) contains all the power conversion hardware — rectifier, capacitors, IGBT inverter. The control unit (CU) contains the drive's control algorithms, communications, and parameter storage. A power electronics failure does not damage the CU and vice versa — each can be replaced independently. This separation reduces repair cost since only the faulted section requires replacement.

Q2: Does the 6SE7027-2ED84-1HF5 cover both 380V and 460V supplies from the same module?

Yes. The 380–460V AC range is the standard MASTERDRIVES industrial supply range covering both European (380–400V) and North American (460V) installations from one module. The PEU's rectifier and DC bus components are rated for the full 380–460V range — no hardware adjustment is needed when the module moves between sites with different supply voltages within this range.

Q3: What fault symptoms indicate the 6SE7027-2ED84-1HF5 PEU needs replacement rather than repair?

PEU replacement (rather than component-level repair) is indicated when: an IGBT transistor has failed short circuit (the resulting fault current can damage surrounding board components); a DC bus capacitor has failed open or with significantly reduced capacitance; the rectifier bridge shows asymmetric or open-circuit readings on any phase. If the damage is limited to a single replaceable sub-component (a gate resistor, a snubber capacitor), component-level repair by a qualified technician may be viable.

Q4: After replacing the 6SE7027-2ED84-1HF5 PEU, must drive parameters be re-entered?

No. All drive parameters are stored in the control unit's memory — not in the PEU power hardware. The replacement PEU contains no configurable electronics; it is purely power hardware. After fitting the replacement module and completing the mechanical assembly, power up the drive and verify it completes precharging and self-test before enabling the motor.

Q5: What safety precautions apply when replacing 6SE7027-2ED84-1HF5?

Isolate and lock out the 3-phase mains supply. The PEU's DC bus capacitors at 72A/380–460V retain a charged voltage of approximately 540–650V DC after mains isolation — this is immediately lethal. Follow the full capacitor discharge procedure in the MASTERDRIVES maintenance manual, wait the specified discharge interval, and verify DC bus voltage is below 50V with a calibrated voltmeter before touching any PEU components.