INDRAMAT 109-0780-4A01-02 TKF3 Tachogenerator

Description

Key Technical Specifications

A Bosch Rexroth/INDRAMAT product listing explicitly associates the TKF3 with the 109-0780-4A01-02 / 109-0780-4B01-02 part numbers and describes the device as a tachogenerator for an INDRAMAT MAC112D-0-ED-2-C/130-B-1 motor.

Important identification point: An industrial spare-parts database separately lists the 109-0780-4B01-02 variant as a “PC BOARD FOR ENCODER,” while the TKF3 listings group the A01-02 and B01-02 designations together. Do not substitute the A01-02 and B01-02 assemblies solely because the numbers are similar; verify the complete motor feedback assembly and application.

Product Introduction

The INDRAMAT 109-0780-4A01-02 is identified as a TKF3 tachogenerator used for rotational-speed feedback in INDRAMAT motor systems. The device is associated with Bosch Rexroth/INDRAMAT motor technology and is listed specifically for applications including the MAC112D motor family.

This is a motor feedback component, not a PLC I/O module. When replacing it, the motor type, mechanical mounting, feedback interface, and associated 109-0780-series assembly should be matched carefully. Public sources do not provide enough reliable information to state its complete electrical output specification without the applicable TKF3 documentation.

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation — Approximately 15 Minutes

⚠️ Safety First: Stop the drive system using the approved machine procedure. Isolate the drive’s electrical supply and mechanical energy according to site lockout/tagout requirements.

Tools Required:

• ESD protection where applicable
• Digital multimeter
• Appropriate screwdrivers and motor-service tools
• Connector labels
• Camera or smartphone
• Motor/drive service documentation

Data Backup:

1. Record the complete motor nameplate information.
2. Photograph the existing tachogenerator and cable routing.
3. Record the complete part number, including 109-0780-4A01-02.
4. Photograph connector orientation before removal.
5. Record the drive feedback configuration.
6. Check for existing speed-feedback or encoder faults.

Stage 2: Removing the Old Unit — Approximately 10 Minutes

1. Confirm the motor has stopped completely.
2. Verify electrical isolation.
3. Establish the required ESD precautions.
4. Photograph the feedback assembly before disassembly.
5. Label the feedback cable.
6. Disconnect the feedback connector without pulling on the cable.
7. Remove the mechanical retaining hardware.
8. Carefully remove the tachogenerator from the motor.
9. Inspect the motor shaft/interface for contamination or mechanical damage.
10. Compare the removed unit with the replacement.

⚠️ Do not force the tachogenerator from the motor. Mechanical damage to the motor feedback interface can turn a simple sensor replacement into a motor repair.

Stage 3: Installing the New — Approximately 10 Minutes

1. Verify the replacement marking: 109-0780-4A01-02.
2. Confirm the designation.
3. Compare the mechanical interface with the removed unit.
4. Check the motor model before installation.
5. Install the tachogenerator in the correct orientation.
6. Secure the mechanical mounting hardware according to the applicable motor documentation.
7. Reconnect the feedback cable.
8. Ensure the connector is fully seated.
9. Route the cable away from high-current motor conductors where required.
10. Check that the cable cannot contact rotating or hot components.

Self-Checklist:

• Part number verified
• designation confirmed
• Motor model verified
• Mechanical interface matched
• Connector orientation correct
• Feedback cable secured
• No mechanical interference

Stage 4: Drive Commissioning & Testing — Approximately 15 Minutes

1. Restore the drive system according to the OEM procedure.
2. Check the drive for active feedback-related faults.
3. Verify the feedback configuration in the drive controller.
4. Start the motor at low speed where the machine procedure permits.
5. Compare commanded speed with the reported feedback speed.
6. Check for unstable or missing speed feedback.
7. Increase speed gradually while monitoring the feedback signal.
8. Check for feedback-related diagnostic alarms.
9. Verify correct motor direction.
10. Record the replacement and commissioning results.

⚠️ Troubleshooting Note: A drive fault immediately after replacement does not necessarily indicate a defective . Check mechanical seating, feedback wiring, connector orientation, motor configuration, and feedback scaling first.

109-0780-4A01-02

109-0780-4A01-02

Frequently Asked Questions (FAQ)

What is the INDRAMAT 109-0780-4A01-02?

It is an INDRAMAT tachogenerator used as a motor rotational-speed feedback device. Industrial listings associate it with INDRAMAT servo motor systems.

Is 109-0780-4A01-02 a PLC module?

No. Available product-specific information identifies it as a tachogenerator, not a PLC, VME module, or conventional I/O card.

What motor is associated with the ?

One product-specific listing identifies the with the MAC112D-0-ED-2-C/130-B-1 INDRAMAT motor configuration. This should be treated as an application example rather than proof that every 109-0780-4A01-02 unit is interchangeable across all INDRAMAT motors.

Is 109-0780-4B01-02 interchangeable with 109-0780-4A01-02?

Do not assume so. Listings group both numbers under , but another industrial database identifies 109-0780-4B01-02 separately as an encoder-related PC board. Verify the complete assembly and motor compatibility before substitution.

What should I check before ordering?

Provide the supplier with:

• Complete part number: 109-0780-4A01-02
• designation
• Motor model
• Existing feedback-device photographs
• Connector details
• Existing drive/controller model

This is particularly important because tachogenerator compatibility depends on the motor’s mechanical and electrical feedback interface.

Is the part available new or refurbished?

Current industrial listings show refurbished/tested units for 109-0780-4A01-02, while another stock source lists related 109-0780-series units as used. Condition therefore needs to be confirmed for each individual offer rather than assumed from the part number.

Does the tachogenerator need drive parameter changes after replacement?

The mechanical replacement itself does not establish whether parameter changes are required. Verify the drive’s feedback type, scaling, polarity, and monitoring parameters against the original configuration and the applicable INDRAMAT documentation before returning the motor to production.