Bottom line
What this comparison can establish
Photograph and label the complete DIAX04 cabinet before removing a module. The supply, each HDS axis and its motor form one evidence chain.
Cabinet system guide / DIAX04 architecture
DIAX04 HDS and HVE Cabinet Identification
A DIAX04 request can involve one failed HDS controller, but the working context includes the HVE or HVR supply, line components, DC bus, adjacent axes, motors, command modules and firmware. A cabinet map prevents one label from being treated as the whole system.
Side-by-side identity
What each product label must tell you
HVE / HVR
Browse products →- Role
- Power-supply layer for the DIAX04 drive system, with mains and DC-bus responsibilities.
- Verify
- Complete supply code, line components, bus, auxiliary modules, braking/regeneration and faults.
- Do not assume
- Do not treat a supply fault as proof that the supply is the only failed component.
- Role
- Axis-controller layer configured by current, communication, function, firmware and motor.
- Verify
- Every HDS label, cabinet position, command option, function ID/version, firmware and connected motor.
- Do not assume
- Adjacent HDS units may look alike while serving different axes and configurations.
Decision path
Turn the cabinet into a useful evidence set
Where does power enter?
Capture: Capture mains equipment, HVE/HVR supply and visible bus connections.
Then: Map the power path before identifying an individual axis fault.
Which controller belongs to which axis?
Capture: Number cabinet positions and record each HDS and motor designation.
Then: Keep axis identity attached to modules, cables and labels.
What changed before the fault?
Capture: Record fault displays, sequence, load event, cable work and recent module changes.
Then: Use the event history to scope technical follow-up without assuming cause.
Official manufacturer records
Use the edition that matches the installed hardware.
Verified downloads open on the manufacturer’s site. Other references open a library entry with assistance options. Confirm the applicable edition, physical nameplate and machine documentation.
R911320338Rexroth DIAX04 HDD and HDS Drive Controllers, 2nd Generation — Commissioning Manual
Factory documentation for HDS ratings, modules, connection points, installation and second-generation hardware.
View document reference →R911275432DIAX04 HVE and HVR Power Supply UnitsReference for HVE and HVR supply architecture, dimensions, mains connection and DC-bus control.
View document reference →Common questions
Before you request a configured match
Why identify every axis if only one drive failed?
Cabinet position, supply loading, shared bus context and similar neighboring hardware can affect identification and service planning.
Should cables and modules be labeled before removal?
Yes. Preserve their original positions and identities under qualified procedures before anything is disconnected.
Can a displayed supply fault identify the failed part?
Not by itself. The fault is one piece of evidence alongside the exact hardware, event sequence, line equipment and connected drives.
Availability · repair · exchange
Send the complete code.
The suffix can change electrical and mechanical compatibility. Include every character and a clear nameplate photo.