New Version PSU1 Power Supply Board 6SE7031-7HG84-1JA1 6SE70317HG841JA1 6SE7O31-7HG84-1JA1 6SE7 031-7HG84-1JA1

Siemens 6SE7031-7HG84-1JA1 SIMOVERT PSU1 Module

The 6SE7031-7HG84-1JA1 is a SIMOVERT MASTERDRIVES PSU1 power supply module for devices with designs E through H.

Siemens support pages for this exact part identify it as a spare part in the MASTERDRIVES family and specify the accepted supply ranges as 3 AC 380–460 V, 660–690 V, 50/60 Hz, and 510–620 V DC or 890–930 V DC.

That makes this module far more specific than a generic “power board” label.

It belongs to the internal power-supply stage of the drive and should be matched by both PSU1 designation and design range E–H, especially where the incoming supply configuration is already fixed in the installed system.

MASTERDRIVES documentation also places the X9 terminal strip on PSU1 types E to H, which reinforces the design-class fit.

Technical Data

Application Description

This module is used in SIMOVERT MASTERDRIVES installations where the power-supply section is built around the PSU1 arrangement for designs E through H.

In practice, it is suited to drive repair, power-supply section replacement, and legacy drive restoration where the incoming supply range and the installed hardware design class must remain unchanged.

Because the part supports both AC and DC supply ranges, it is especially relevant in installations where the existing drive platform has already been engineered around that original PSU1 input configuration.

Matching the installed supply class correctly matters more than treating it as a universal drive power board.

Why Choose This Product

6SE7031-7HG84-1JA1 is the right choice when the installed system already uses a PSU1 module in the E-to-H design range and the drive must stay within the original MASTERDRIVES hardware path.

Its clearly defined input ranges make it easier to match correctly than a generic spare power module.

FAQ

Q1. What type of module is 6SE7031-7HG84-1JA1?
It is a SIMOVERT MASTERDRIVES PSU1 power supply module for devices with designs E through H.

Q2. What does this module do in the system?
Its role is to serve the power-supply section of the drive. The PSU1 designation and the documented design range place it in the internal supply path rather than in the communication, operator, or braking section.

Q3. What should be checked when selecting 6SE7031-7HG84-1JA1?
Check the exact order number, the PSU1 designation, the design class E through H, and the installed input supply range.

Those are the core matching points for this module.

Q4. How should the voltage specifications be understood?
The module is specified for 3 AC 380–460 V, 660–690 V, 50/60 Hz, and also for 510–620 V DC or 890–930 V DC.

Those ranges should be read as selection-critical operating input categories, not as optional side notes.

Q5. How should faults be diagnosed before replacing this module?
Start by separating an input power-supply section fault from a downstream inverter or control-board fault.

If the drive is confirmed to use PSU1 E–H hardware and the issue aligns with the module’s supply role rather than motor-side switching or control logic, PSU1 becomes a stronger replacement candidate.