Products Description
ABB RTAC-01 Pulse Encoder Interface Module DCS Module in stock
| Model Number |
RTAC-01 |
| Place of Origin |
Finland |
| Dimension/Weight |
9.6*11.9*5.4cm / 0.2kg |
| Condition |
New and Original |
| Warranty |
1 year |
| Shipping term |
DHL Fedex TNT EMS UPS |
| Payment |
TT / Western Union |
| Delivery time |
3-5 days |
| Service |
24 Hours Online Service |

Main Specifications
Core Features & Advantages
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Accurate Speed and Position Feedback: The module's primary function is to provide the drive with high-resolution encoder feedback . This enables applications requiring precise speed regulation, positioning, and synchronization .
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Flexible Encoder Compatibility and Installation: It supports various encoder types and signal levels, including TTL and HTL, as well as differential and single-ended connections . The module can be installed directly into the drive's control board or mounted externally using an adapter .
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Robust Industrial Design and Diagnostics: The RTAC-01 features diagnostic LEDs for rapid troubleshooting and is designed for the ambient conditions specified for the host drive . It includes built-in isolation to protect against electrical noise .
Typical Applications
The RTAC-01 is used in industrial applications where closed-loop motor control is critical, including:
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Machine Control: Precise speed and position control in CNC machines, robotics, and packaging machinery .
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Material Handling: Synchronizing motors on conveyors and ensuring accurate product positioning .
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Process Control: Providing feedback for winding and unwinding operations in industries like paper, textile, and printing .
Frequently Asked Questions (FAQ)
Q1: Which ABB drives are compatible with the RTAC-01?
A: The RTAC-01 is designed for ACS800 series drives , and is also compatible with ACS600, ACH400, ACH500, and ACH600 series, though specific model verification is recommended .
Q2: What encoder types and signal formats are supported?
A: It supports incremental encoders with differential or single-ended outputs, including open collector, push-pull, TTL, and HTL signal levels .
Q3: What is the maximum encoder input frequency?
A: The maximum frequency is 200 kHz . Some sources mention 300 kHz for certain applications .
Q4: What encoder supply voltage does the module provide?
A: The module provides a selectable supply voltage of either 15 V DC or 24 V DC to power the encoder . For encoders requiring higher power, an external supply may be needed .
Q5: What is the maximum cable length between the encoder and module?
A: This depends on the encoder output type. The maximum recommended length is 300 meters for differential push-pull, 200 meters for single-ended push-pull, and 100 meters for open collector or emitter outputs .
Q6: Is the RTAC-01 the same as the OTAC-01 or NTAC-02?
A: These are different but related pulse encoder interface modules. The OTAC-01 is marketed as a replacement and upgrade solution compatible with several ABB drive series . The NTAC-02 is another pulse encoder interface module for ABB's ACS and DCS drive platforms . Always verify compatibility for your specific drive model.
Q7: How is the RTAC-01 physically installed?
A: It is typically installed into one of the option slots on the drive's RMIO control board . An optional external I/O Module Adapter (AIMA-01) is available for mounting on a DIN rail .
Recommended Models & Related Products
The RTAC-01 is part of ABB's pulse encoder interface module family. Below are key related products for similar or alternative communication needs:
Choosing the Right Model
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For ACS800 drives: The RTAC-01 is the standard and recommended module for encoder feedback integration .
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For system upgrades: The OTAC-01 may offer a modernized drop-in replacement for existing encoder interfaces in ACS series drives .
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For integration with S800 I/O: The DP820 is the appropriate pulse counter module for S800 systems .