Description
🔹 Product Overview
The 109-1039-3A01-12 is an industrial electronic board/module associated with the Rexroth Indramat automation and drive equipment family. Available technical references identify this part number with a board/module assembly incorporating Semikron SKM 40 GD 124 D and Semikron SKD 25-16 semiconductor components.
This type of assembly is intended for use within industrial drive and power-control equipment, where semiconductor switching and power-interface functions are handled at board level. Because the exact electrical configuration can vary by equipment revision, the complete part number, board markings, connector arrangement, and installed semiconductor devices should be checked before replacement.
The 109-1039-3A01-12 is best treated as a legacy industrial spare rather than a generic Bosch PCB. Correct identification is important when maintaining older Rexroth Indramat systems.
🔹 Key Features
- Rexroth / Indramat industrial control and drive component
- Part number 109-1039-3A01-12
- Board/module construction for industrial power electronics
- Associated with Semikron SKM/SKD semiconductor devices
- Suitable for legacy Rexroth Indramat equipment maintenance
- Useful as a replacement or maintenance spare
- Requires exact revision and hardware comparison before installation
- Suitable for planned maintenance and critical spare inventory
🔹 Technical Datasheet
| Parameter | Specification |
|---|---|
| Brand | REXROTH / INDRAMAT |
| Model | 109-1039-3A01-12 |
| Part Number | 109-1039-3A01-12 |
| Product Series | Rexroth Indramat Industrial Drive Electronics |
| Product Name | Circuit Board / Power Electronics Module |
| Product Type | Industrial Electronic Board Assembly |
| Semiconductor Association | Semikron SKM 40 GD 124 D / SKD 25-16 |
| Primary Function | Power Electronic Switching / Interface Function |
| Application | Industrial Drive and Automation Equipment |
| Product Status | Legacy Industrial Automation Spare |
🔹 Power Electronics Function
The board is associated with power semiconductor components rather than functioning as a general-purpose PLC I/O module. The identified Semikron components indicate an assembly intended to handle power-electronic switching and interfacing within the associated drive system.
When installed in a complete Rexroth Indramat system, the board should be considered part of a larger electrical chain that may include:
Controller → Drive Electronics → Power Semiconductor Stage → Motor / Machine
Correct semiconductor ratings, gate/control connections, cooling arrangements, and protection circuitry must be maintained when replacing the board.
🔹 System Integration
Before installing a replacement, compare:
- Complete 109-1039-3A01-12 part number
- PCB revision and date codes
- Semiconductor device markings
- Connector positions and pin assignments
- Mounting-hole pattern
- Terminal and cable arrangement
- Adjacent power modules
- Existing drive/controller model
- Firmware or hardware revision requirements
A visually similar Indramat board should not automatically be considered interchangeable. Different suffixes within the 109-1039 family can correspond to different board configurations.
🔹 Typical Applications
The board can be relevant to legacy Rexroth Indramat industrial automation equipment, including:
- AC servo drive systems
- Industrial machine tools
- CNC machinery
- Motion-control equipment
- Manufacturing machinery
- Power-control assemblies
- Legacy automated production lines
It is particularly useful where the original drive architecture remains in service and replacing the complete drive would require substantial machine modification.
🔹 Installation & Commissioning
- Isolate all AC and DC power sources before servicing.
- Verify that the DC bus has discharged to a safe level.
- Record the original board position and connector locations.
- Confirm the replacement part number and revision.
- Inspect semiconductor components and PCB surfaces for shipping damage.
- Check connectors for oxidation, looseness, or bent contacts.
- Install the board without applying excessive mechanical force.
- Verify grounding and mounting hardware.
- Inspect cooling and ventilation around the power electronics.
- Perform controlled power-up and monitor drive status before returning the machine to production.
High-voltage drive equipment should only be serviced by qualified personnel.
🔹 Troubleshooting
Drive does not start:
Check incoming power, DC-bus status, control signals, and the surrounding drive modules before identifying the board as defective.
Repeated semiconductor failure:
Investigate motor insulation, output short circuits, grounding, overload conditions, cooling, and upstream/downstream power components. Replacing the board alone may not correct the underlying fault.
Intermittent operation:
Inspect connectors, solder joints, terminal connections, cooling conditions, and signs of thermal stress.
Overcurrent or protection fault:
Check the motor circuit and semiconductor stage before replacing electronic components.
Replacement board does not operate:
Confirm the exact part number, revision, connector configuration, and compatibility with the installed Indramat drive assembly.
🔹 Maintenance
For long-term storage and spare management:
- Keep the PCB in suitable antistatic packaging.
- Protect the board from moisture and conductive contamination.
- Avoid unnecessary handling of semiconductor and connector areas.
- Inspect stored boards periodically.
- Maintain records of part number and revision.
- Keep one tested spare available for critical production equipment.
- Use preventive replacement planning for obsolete drive systems.
🔹 Replacement Considerations
The 109-1039-3A01-12 should be matched by exact part number whenever possible. The 109-1039 family contains different suffixes and configurations, so a nearby part number should not be substituted simply because the PCB appears similar.
For an accurate replacement decision, compare the original board photograph, PCB markings, semiconductor markings, connectors, revision information, and the complete drive model.
🔹 FAQ
What is REXROTH 109-1039-3A01-12?
It is a legacy Rexroth Indramat industrial electronic board/module associated with power-electronic semiconductor components.
Is it a PLC module?
It should not be classified as a conventional PLC CPU or I/O module. Its identified configuration is associated with industrial power electronics.
Which semiconductor devices are associated with this part number?
Available references identify Semikron SKM 40 GD 124 D and SKD 25-16 components in connection with 109-1039-3A01-12.
Can another 109-1039 board be used as a replacement?
Not automatically. Different suffixes can represent different hardware configurations and applications.
Is this part suitable for a modern Rexroth drive?
It is primarily relevant to legacy Indramat equipment. Compatibility should be confirmed against the exact installed drive system.
What should be checked before purchasing?
Check the complete part number, PCB revision, semiconductor markings, connector layout, original equipment model, and physical board configuration.
🔹 10 Related Rexroth / Indramat Models
- Indramat 109-1039-3A01-05
- Indramat 109-1039-3A01-07
- Indramat 109-1039-3A01-08
- Indramat 109-1039-3A01-09
- Indramat 109-1039-3B01-05
- Indramat 109-1039-3B01-08
- Rexroth DKC03.3 Drive Controller
- Rexroth DKC02.3 Drive Controller
- Rexroth DDS Series Digital AC Servo Drive
- Rexroth Indramat TDM Series Servo Drive
🔹 Product Summary
The REXROTH 109-1039-3A01-12 is a legacy Indramat circuit-board/module assembly associated with industrial power electronics and Semikron semiconductor components. It is a practical spare-part candidate for maintaining older Rexroth drive and automation systems where original hardware compatibility is required.
For replacement projects, always match the complete part number and hardware configuration rather than relying on the general board family designation.
