OTAC-01 Overview

ABB ABB Adapter Pulse Encoding Module OTAC-01 is a pulse encoder interface module designed for ACS550 drives, providing precise motor speed or position feedback by connecting a digital pulse encoder.

Features and benefits

Enhances Control Accuracy: Provides precise motor shaft speed and position feedback to the ACS550 drive, improving performance.

Flexible Control Mode Support: Compatible with Vector Speed, Vector Torque, and Scalar Speed control modes for optimized operation.

Simple Installation: Features a plug-and-play design with a 6-pin connector for automatic signal and power connection to the drive.

Comprehensive Diagnostics: Includes a power/status LED and configurable fault response (Fault/Warning) for encoder signal loss.

External Power Interface: Offers integrated pass-through terminals for connecting an external or the drive's own 24V DC power supply to the encoder.

Multi-Channel Support: Accommodates standard digital encoders with three signal channels (A, B, and Z).

FAQ

Q1: What is the primary function of the ABB OTAC-01 module?

A1: It is a Pulse Encoder Interface designed to connect a digital pulse encoder to an ACS550 drive for accurate motor speed or position feedback.

Q2: Does the OTAC-01 module supply power to the encoder itself?

A2: No, it does not. An external power supply (or the drive's 24 VDC supply if within limits) must be connected through the module's pass-through terminals.

Q3: What should I check if the module's green diagnostic LED does not light up after powering the drive?

A3: You should cycle the drive's power, check the condition and connection of the 6-pin connector, or potentially replace the module if it has failed.

Q4: How does the drive respond if the encoder signal is lost during operation?

A4: The response is configurable via Parameter 5003. It can be set to cause an immediate fault and motor stop (FAULT) or to issue a warning and continue operating using internal motor model data (WARNING).

Q5: Is the OTAC-01 module compatible with all motor control modes of the ACS550 drive?

A5: Yes, when enabled, it provides benefits in Vector Speed, Vector Torque, and Scalar Speed control modes, improving feedback accuracy and low-speed performance.