Description
ABB NTAC-02 58967441 Pulse Encoder Interface
NTAC-02 (material number 58967441) is a pulse encoder interface module launched by ABB, belonging to the NTAC series, mainly used in conjunction with the ACS 600/ACS 800 MultiDrive frequency converter system. The module itself does not execute control algorithms. Its core function is to convert the electrical pulse signal output by the pulse encoder into a standard digital signal, which is used by the upper level controller (such as PLC, DCS) for position and velocity calculations.
Signal processing capability

ABB NTAC-02 58967441 Pulse Encoder Interface
The input terminal receives pulse encoder signals and supports incremental and absolute encoders. The output terminal provides standard digital signals with configurable resolution, up to 20 bits, and an accuracy of ± 0.05% of full scale. The module adopts advanced signal processing technology internally to filter, shape, and count the raw pulses of the encoder, eliminate jitter and noise interference, and ensure that the upper controller receives clean and reliable position/velocity data.
Electrical Characteristics
The working power supply is 24V DC. Electrical isolation is achieved between the input channel and the system side, effectively blocking the impact of on-site grounding circuits and transient interference on the controller. Equipped with overvoltage protection, overcurrent protection, and surge protection. Automatically detect the electrical ID of the module when powered on, and refuse to enter the running state when it does not match the system configuration, to prevent signal errors caused by mismatches.
Physical specifications
The dimensions are approximately 100mm x 60mm x 30mm, and the weight is about 0.5kg. It is installed inside the control cabinet using DIN rails. Protection level IP20, working temperature range -20 ° C to+60 ° C. Onboard LED indicator lights display real-time power status, communication activity, and fault conditions, making it easy to quickly locate problems on site. Supports hot swapping and can be replaced without interrupting communication when the system is powered on.
System ownership
NTAC-02, along with NDIO-0x (digital I/O extension) and NAIO-0x (analog I/O extension), belongs to the ABB inverter I/O extension module family and shares the same installation and startup guide (3AFY 58919730). It operates in a plug and play manner on the control panel bus of the ACS 600 inverter.
Typical Applications
Axis position feedback of CNC machine tools, joint angle measurement of industrial robots, positioning control of packaging machinery, color matching control of printing machinery, tension control of textile machinery, conveyor belt positioning of food machinery, and any situation that requires high-precision position/speed closed-loop control.


