LDMTR-01 63940135F | ABB Drive I/O Interface Module

The LDMTR-01 (Part Number 63940135F) is a specialized I/O interface module designed for ABB’s high-performance drive systems. It serves as a critical bridge between the drive’s control unit and external machinery components, specifically handling signals for motor thermal protection, status feedback, and auxiliary control. Engineered for reliability, it ensures that motor data is accurately transmitted to the drive logic to prevent overheating and mechanical failure.

Technical Datasheet

Product Specifications

  • Model Number: LDMTR-01

  • Part Number: 63940135F

  • Module Type: I/O Interface / Motor Monitoring Module

  • Compatibility: ABB ACS series and specialized high-power drives

  • Input Channels: Supports PTC/PT100 thermal sensors and digital feedback

  • Supply Voltage: 24V DC (typically provided by the drive backplane)

  • Power Consumption: <3W

  • Isolation: Galvanic isolation between field side and control side

  • Dimensions: 115mm x 90mm x 35mm

  • Weight: 0.18 kg

  • Country of Origin: Finland / Estonia

Application Areas

The LDMTR-01 is primarily utilized in heavy industrial drive cabinets for sectors such as pulp and paper, mining, and metal processing. Its specific role is to monitor the thermal state of large induction or synchronous motors. By interfacing with thermistors embedded in the motor windings, the LDMTR-01 allows the drive to trigger an immediate trip or alarm if critical temperature thresholds are exceeded, protecting the motor from permanent damage.

Product Instructions

  1. Mounting: Snap the LDMTR-01 onto the designated I/O slot of the drive’s control unit or onto a standard DIN rail if using a remote I/O configuration. Ensure the plastic retaining clips are locked.

  2. Wiring Sensors: Connect the motor’s thermal sensors (PTC or PT100) to the specified input terminals. Use shielded cabling for these connections to prevent high-frequency drive noise from interfering with the low-voltage sensor signals.

  3. Address Setting: If the module is part of a distributed I/O network, set the station address using the onboard DIP switches before applying power.

  4. Drive Parameterization: Access the drive’s control panel or software (e.g., Drive Composer). Navigate to the I/O extension parameters and activate the LDMTR-01 slot. Define the fault action (Warning or Trip) for over-temperature events.

  5. Status Monitoring: Observe the front-panel LEDs. A green “OK” or “PWR” LED should be lit. If a “FAULT” LED appears, check for open-circuit or short-circuit conditions in the motor sensor wiring.

Q&A: Frequently Asked Questions

Can the LDMTR-01 be used with non-ABB motors? Yes, as long as the motor is equipped with standard thermal protection sensors like PTC thermistors or PT100 elements that fall within the module’s supported resistance range.

What is the difference between the LDMTR-01 and standard digital I/O modules? Standard I/O modules handle general start/stop signals. The LDMTR-01 is specifically tuned for the electrical characteristics of motor protection circuits, offering specialized filtering and higher precision for thermal monitoring.

Is this module hot-swappable? In most ABB drive architectures, it is recommended to power down the control unit before removing or inserting the LDMTR-01 to avoid communication glitches or hardware damage to the backplane.

What should I do if the drive does not recognize the module? First, check that the module is firmly seated in the slot. Second, verify that the drive firmware supports this specific I/O revision. In some cases, a drive firmware update is required to “see” newer hardware revisions like the 63940135F.

Recommended Similar Models

  • ABB L97621 (Alternative Drive I/O Board)

  • ABB NDIO-02 (Digital I/O Extension Module)

  • ABB NAIO-03 (Analog I/O Extension Module)

  • ABB LDMTR-02 (Updated version of the thermal interface)

  • ABB 63940135 (Base version of the 6394 series)

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