OTAC-01 ABB Pulse Encoder Interface Module

Parameter

Input Signal Voltage (Low): 0–5 V DC
Input Signal Voltage (High): 10–30 V DC
Compatible Signal Level: TTL / HTL
Maximum Input Frequency: 200 kHz per channel
Minimum Pulse Width: 2.5 µs
Input Signal Rise Time: <1 µs
Input Signal Fall Time: <1 µs
Supply Voltage: 24 V DC
Supply Voltage Tolerance: ±20%
Power Consumption: <2.5 W
Operating Current: ≤100 mA
Inrush Current: <300 mA
Input Impedance: ≥10 kΩ
Isolation Voltage: 500 V AC
Isolation Type: Galvanic isolation
Encoder Power Output Voltage: 15 V DC
Encoder Power Output Current: Max. 200 mA

Frequently asked questions

1.What is OTAC-01?
OTAC-01 is a Pulse Encoder Interface Module

2.How does an OTAC-01 pulse encoder work?
As the encoder shaft rotates, the light beam from the LED is interrupted by the opaque lines on the Code Disk before being picked up by the Photodetector Assembly. This produces a pulse signal: light = on; no light = off.

3.What is an OTAC-01 encoder interface?
Incremental encoder - Wikipedia
An incremental encoder interface is an electronic circuit that receives signals from an incremental encoder, processes the signals to produce absolute position and other information, and makes the resulting information available to external circuitry.

4.What are the 4 types of encoders?
An encoder is classified into four types: mechanical, optical, magnetic, and electromagnetic induction types. There are four types of information necessary to rotate the motor with high accuracy: rotation amount, rotational speed, rotational direction, and rotational position.

Compatibility
The OTAC-01 module is compatible with all ACS550 drives. To confirm compatibility with a particular pulse encoder, compare the pulse encoders requirements to the “Specifications” on page 19. 

Power Generation: Gas and steam turbines, generators, and combined cycle plants.
Oil & Gas: Compressors, pumps, drilling rigs, and process control in upstream, midstream, and downstream operations.
Industrial Machinery: Rotating machinery, motors, compressors, and pumps in manufacturing and process industries.
Aerospace & Transportation: Engine control systems, propulsion monitoring, and auxiliary equipment.
Energy and Utilities: Power distribution, grid management, and critical infrastructure monitoring.

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