Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | HVE04.2-W075N |
| Manufacturer | Bosch Rexroth / Indramat |
| Reference | R911190002 is associated with this type code in current product references |
| Product Family | DIAX04 HVE 2nd Generation |
| Product Type | HVE Power Supply Unit |
| Rated Power | 75 kW class |
| Input Supply | 3-phase AC |
| Nominal Input Voltage | 380–480 VAC |
| Supply Frequency | 50–60 Hz |
| Cooling | Internal air cooling with built-in blower |
| DC Bus Function | Supplies common DC bus to compatible drive controllers |
| Continuous DC Bus Power at 400 VAC | 35 kW in the documented power-data table |
| 30-Second DC Bus Power at 400 VAC | 70 kW |
| 0.3-Second Peak DC Bus Power at 400 VAC | 105 kW |
| Continuous Bleeder Power | 2.5 kW |
| Peak Bleeder Power | 100 kW |
| Maximum Regenerated Energy | 250 kWs |
| DC Bus Choke | None listed for standard W075N configuration at 380–480 VAC |
| Integrated Contactor | Yes |
| Diagnostic Display | HI diagnostic display |
| Installation | DIAX04 drive system |
| Cooling Ambient | Verify cabinet ventilation and installation clearances against the applicable manual |
The Bosch Rexroth/Indramat technical data gives the HVE04.2-W075N several operating points according to mains voltage. At 3 × 400 VAC, the table lists 35 kW continuous DC-bus power, 70 kW for 30 seconds, and 105 kW for 0.3 seconds. At 480 VAC, the corresponding figures rise to 42, 84, and 126 kW.
One procurement detail deserves attention: the W075N and W075N/L are not simply cosmetic variants. The published power tables associate the W075N configuration with no additional DC-bus choke, while the /L configuration is shown with a GLD20 choke.
Application Scenarios & Pain Points
A large servo system does not tolerate casual power-supply substitutions. The common DC bus ties multiple drive controllers together, so an incorrectly selected HVE unit can affect an entire axis group rather than a single motor.
- Multi-axis servo systems: The HVE supplies the common DC bus used by compatible DIAX04 drive controllers, making it suitable for machines with several coordinated servo axes.
- High-power motion equipment: The 75 kW class makes this unit applicable to demanding production machinery where multiple servo drives share a centralized supply.
- Regenerative applications: The documented HVE architecture accommodates regenerated energy, with the configuration listed at 250 kWs maximum regenerated energy.
- Legacy DIAX04 maintenance: Particularly relevant when an older production machine remains serviceable but the original HVE power unit needs replacement.
Field note: Check the DC-bus architecture before ordering. A technician may identify “HVE04.2-” from the front label, but the cabinet may have additional components, choke arrangements, or master/slave requirements that affect the correct replacement configuration.
HVE04.2-W075N
Related Products
- Bosch Rexroth HVE04.2-/L — The closely related 75 kW HVE configuration. The published technical table associates the
/Lversion with a GLD20 DC-bus choke, unlike the standard configuration. Do not substitute based on kW rating alone. - Bosch Rexroth HVE03.2-W030N — Lower-power HVE supply in the same second-generation family. It is suitable for smaller DIAX04 drive systems and should not be used where the installed power calculation requires the capacity.
- Bosch Rexroth HVE03.2-W030N/L — Higher-capacity variant within the HVE03 family, with an associated GLD12 choke arrangement in the documented power table. It belongs to the same architecture but is a different power class.
- Bosch Rexroth HVE02.2-W018N — Smaller HVE supply for lower-power DIAX04 configurations. It is useful when the drive system’s calculated DC-bus demand is substantially below the class.
- Bosch Rexroth HVR03.2-W045N — HVR family power supply rather than HVE. The HVR range serves a different power-supply architecture, so it should not be treated as a direct replacement without a complete system review.
- Bosch Rexroth GLD20 — DC-bus choke associated with the HVE04.2-/L configuration in the published power tables. It is a supporting power component, not a substitute for the HVE itself.
- Bosch Rexroth HDD/HDS drive controllers — Compatible drive-controller families that receive the common DC-bus supply from the HVE architecture. Their individual motor/axis ratings must be included when sizing the HVE system.
- Bosch Rexroth HVE04.2-/S200 — A related ordering designation appearing in spare-part references. Verify the complete suffix and physical nameplate before treating it as equivalent to the base unit.
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Do not match only the 75 kW rating.
The and /L configurations have different associated power-system arrangements. The published documentation shows a GLD20 DC-bus choke with /L, while the standard is listed without that choke.
⚠️ Verify the actual mains voltage and DC-bus power calculation.
The HVE power table changes with the incoming voltage. At 400 VAC, for example, the documented continuous DC-bus figure is 35 kW, while at 480 VAC it is 42 kW. Do not use the headline 75 kW figure as the only sizing criterion.
⚠️ Cooling is part of the installation.
The .2- uses internal air cooling with a built-in blower. A replacement unit installed in a cabinet with restricted airflow can produce thermal problems even when the electrical connections are correct.
Practical check: Before removing the old HVE, photograph the type plate, record the incoming line voltage, inspect the blower and air path, document DC-bus wiring, and identify any external choke or braking components. After installation, check precharge/contactor behavior, DC-bus voltage, fault indications, and the complete axis group before enabling machine motion.
Frequently Asked Questions (FAQ)
What is Bosch Rexroth .2- used for?
The .2- is a HVE power supply unit used to establish the common DC bus for compatible drive controllers in multi-axis servo systems. It accepts three-phase AC mains and supplies the DC-bus architecture required by the connected drives.
What input voltage does .2- require?
The documented nominal input range is 3 × 380–480 VAC, with 50–60 Hz operation. The exact system power capability depends on the actual mains voltage, so the installation should be checked against the original system design data.
Is .2- really a 75 kW power supply?
It is classified as a 75 kW HVE power-supply unit, but the detailed power table is more useful for engineering calculations. At 400 VAC, for example, the table lists 35 kW continuous DC-bus power, 70 kW for 30 seconds, and 105 kW for 0.3 seconds.
Can I replace .2- with .2-/L?
Do not assume direct interchangeability. The /L configuration is associated with the GLD20 DC-bus choke in the documented system configuration, while the standard is listed without that choke. Compare the complete cabinet design, external components, and original type code first.
What should I inspect when buying a used or refurbished .2-?
For this power level, a simple power-up test is not enough. Request confirmation of:
- Exact type code and serial/identification label
- AC input and DC-bus test results
- Contactor/precharge operation
- HI diagnostic display operation
- Blower condition
- Insulation and terminal condition
- Fault-history information where available
- Test report and warranty terms
Inspect the high-current terminals carefully. Heat discoloration, loose hardware, or damaged insulation is a reason to stop and investigate before installation.
Does .2- include the external DC-bus choke?
The documented standard .2- configuration is listed without a DC-bus choke, while the .2-/L configuration is shown with a GLD20 choke. Therefore, do not assume that a choke is included with the power unit itself. Verify the original cabinet configuration before ordering.
