Rexroth R911268888 | Original DIAX Servo Controller Part

1. Rexroth R911268888 | Original DIAX Servo Controller Part

Unboxing & Physical Snapshot

• Model & Brand: Bosch Rexroth Indramat R911268888
• Product Type: TVD 1.3-15-03 servo power supply unit for Bosch Rexroth DIAX02/DIAX03 drive systems. The unit provides DC bus power for connected servo amplifiers in industrial motion control applications.
• Approximate Physical Dimensions (W × H × D):
  • Approximately 120 × 260 × 360 mm (housing dimensions may vary by measurement method)
• Estimated Shipping Weight:
  • Unit weight: approximately 15–20 kg class
  • Typical packaged shipping weight: 18–25 kg
• What’s in the Box:
  • Bosch Rexroth TVD1.3-15-03 power supply unit
  • Front identification label
  • Power and DC bus connection terminals
  • Protective packaging
  • Anti-static protection where applicable
  • Documentation when supplied

Product Introduction

The Bosch Rexroth R911268888 installs as the central power supply component inside DIAX02/DIAX03 servo drive cabinets. It converts three-phase AC input power into a controlled DC bus supply for connected servo amplifiers, supporting coordinated motion systems used in machine tools, handling equipment, and automated production machinery. The unit is identified as TVD 1.3-15-03, with a rated power range of approximately 7.5/15 kW and 380–480 VAC input operation (—which is critical for multi-axis machines requiring stable DC bus distribution).

This assembly requires strict replacement control. Confirm the complete Rexroth part number, connected drive family, DC bus requirements, and cabinet wiring diagram before installation. Check the power terminals. Check the DC bus connections. A physically similar supply unit may not match the existing axis configuration or protection settings.

Core Technical Specifications

Rexroth R911268888

? Global Compliance & Industry Certifications

Expected regulatory approvals for the Bosch Rexroth R911268888 include:

• CE Mark
  • Applies when installed as part of a compliant Rexroth drive system meeting EMC and machinery requirements.
• UL/cUL Recognition
  • May apply depending on system configuration and North American installation requirements.
• ATEX / IECEx
  • Not normally a standalone hazardous-area certified power supply. Hazardous-area use requires a complete approved system design.
• Marine Approvals (DNV GL)
  • Applicable only when integrated into a certified marine automation package.

Power supply certification is important because this unit handles high-energy DC bus circuits. Incorrect replacement or wiring can create electrical hazards and damage connected servo amplifiers.

Verify specific lot certifications with OEM.

? Long-Term Storage & Asset Preservation Guide

Store the R911268888 in a dry, temperature-controlled warehouse. Maintain humidity below 60% RH to reduce corrosion risk on terminals, connectors, and internal PCB assemblies.

Protect the power terminals and DC bus connection points from dust and oxidation. Keep original covers and packaging installed until the unit is required.

For long-term storage exceeding two years, perform controlled inspection before energizing. DC bus capacitors can degrade during extended idle periods; a gradual power-up procedure may be required to reduce electrical stress (—a common practice for legacy servo power assemblies).

Record inspection dates, serial numbers, and storage conditions on the asset tag.

Physical Installation Prerequisites

• Install only inside a compatible Bosch Rexroth DIAX drive cabinet.
• Mount vertically to maintain proper cooling airflow.
• Confirm cabinet ventilation capacity before startup.
• Leave adequate clearance around cooling openings; approximately 50 mm minimum clearance is recommended where cabinet design permits.
• Connect protective earth before applying power.
• Verify AC input voltage and phase sequence.
• Inspect DC bus terminals before connection.
• Confirm connected servo amplifiers match the power supply rating.
• Perform insulation and safety checks before commissioning.

Buyer’s FAQ (Logistics & Compliance Focus)

Q: What HS Tariff Code is commonly used for the Rexroth ?

A: Servo power supply units are commonly reviewed under HS 8504 categories for electrical power conversion equipment. Final classification depends on the importing country’s customs interpretation.

Q: Why is Country of Origin (COO) important for this power supply?

A: COO affects customs duty treatment, import documentation, and traceability records. The commercial invoice, packing list, and certificate of origin should contain consistent information.

Q: Should shipping insurance be arranged for the ?

A: Recommended. This unit contains heavy power components, capacitors, and internal cooling hardware. Mechanical shock during transportation can damage internal assemblies even when the external housing appears intact.

Q: Does the include the latest firmware pre-loaded?

A: This is a power supply unit rather than a programmable controller. Firmware loading is generally not the primary configuration factor. Verify compatibility with the connected DIAX drive system and existing cabinet documentation before installation.