Description
- Model: ABB NTAC-02
- Part Number: 58967441E
- Brand: ABB
- Series: ACS 600
- Core Function: Digital pulse encoder speed/position feedback
- Product Type: Pulse Encoder Interface Module
- Key Specs: 15/24 V encoder supply | 100 kHz maximum signal frequency | 24 V DC module supply
ABB identifies the NTAC-02 as a Pulse Encoder Interface Module for ACS 600 frequency converters. It provides the interface for a digital pulse encoder when accurate motor-shaft speed or position feedback is required.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Type Designation | NTAC-02 |
| Product ID | 58967441 |
| Part Reference | 58967441E |
| Product Type | Pulse Encoder Interface Module |
| Application | ABB ACS 600 frequency converters |
| Mounting | Standard mounting rail |
| Dimensions | 45 mm × 75 mm × 105 mm |
| Degree of Protection | IP20 |
| Encoder Supply | 15 V DC or 24 V DC |
| Maximum Encoder Frequency | 100 kHz |
| Speed Feedback Resolution | 0.00305% / 15-bit |
| Module Current Consumption | 250 mA max. at 24 V DC, typical |
| Encoder Inputs | A, B, Z channels |
| Channel Relationship | Channel B 90° electrical from Channel A |
| Communication Interface | Hewlett-Packard Versatile Link optical interface for ACS 600 |
| Terminal Blocks | Phoenix Contact MVBSTW 2,5/8-ST-5,08 |
ABB NTAC-02 58967441E
These specifications are taken from the ABB installation/start-up documentation. The manual states that NTAC-02 is intended for ACS 600 drives, supports 100 kHz maximum encoder signal frequency, uses 15 V and 24 V encoder supply levels, and provides 15-bit speed-feedback resolution.
Product Introduction
ABB NTAC-02 58967441E is a pulse encoder interface module for the ACS 600 frequency converter family. It connects a digital pulse encoder to the drive so the control system can receive accurate motor-shaft speed or position feedback.
The module is rail mounted and uses screw-terminal connections for encoder and power wiring, together with an optical interface for communication with the ACS 600. For replacement work, the exact NTAC revision matters; ABB documentation specifies this guide for NTAC-02 revision C or later.
Application Scenarios & Engineering Considerations
The NTAC-02 becomes important when an ACS 600 installation depends on closed-loop speed or position feedback. Without the encoder interface, an otherwise healthy drive may not be able to obtain the feedback required by its application.
Typical Applications
- Motor Speed Feedback — ACS 600 Drives
Used where the drive needs encoder-derived speed information for controlled motor operation. ABB specifically describes the module as an interface for digital pulse encoders. - Position-Control Applications
The Z channel provides one pulse per revolution and can be used for positioning functions. - High-Speed Encoder Signals
The encoder input supports signal frequencies up to 100 kHz, making correct encoder selection and cable installation important. - Legacy ACS 600 Spare-Parts Stocking
For older ACS 600 installations, keeping a tested NTAC-02 spare can reduce recovery time when the feedback chain is unavailable.
Engineering Case
There is one detail I would check before ordering: do not confuse NTAC-02 with NTAC-01. ABB explicitly states that NTAC-01 and NTAC-02 are not interchangeable. NTAC-01 supports older Standard Application Program versions 2.8–3.0, while version 5.0 and later require NTAC-02. The encoder supply arrangement also differs.
That is exactly the kind of legacy-drive substitution that looks harmless on the workbench and causes trouble during commissioning.
ABB NTAC-02 58967441E
Compatibility & Replacement Matrix
| Existing / Target Part | Compatibility Assessment | Engineering Note |
|---|---|---|
| ABB NTAC-02 → ABB NTAC-02 | Direct replacement candidate | Match revision and complete part identification |
| ABB 58967441E → ABB NTAC-02 | Same product family | Verify the exact product label and revision |
| ABB NTAC-01 → ABB NTAC-02 | Not directly interchangeable | ABB explicitly documents differences in application-program compatibility and encoder supply |
| ABB NTAC-02 Rev. C+ → Earlier NTAC revision | Needs verification | The applicable ABB guide covers NTAC-02 revision C or later |
| ABB NTAC-02 → NDIO-02 | Not compatible by function | NDIO is an I/O extension module, not a pulse encoder interface |
| ABB NTAC-02 → NAIO-03 | Not compatible by function | NAIO is an analog I/O extension module |
Replacement warning: Before installation, verify the ACS 600 drive model, application-program version, NTAC hardware revision, encoder supply voltage, A/B/Z wiring, and node-number setting. ABB documentation states that the NTAC module’s node number is set by DIP switches, with 16 as the default allocated node number.
The available ABB documentation is consistent with the identification NTAC-02 / 58967441, while the supplied 58967441E suffix should be retained as the procurement identifier shown on your item.
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