Simply put, the Allen Bradley 1734-SSI is a communication module. In a factory environment, there are highly precise devices—such as encoders used for position measurement—that output a serial signal known as SSI. Standard PLCs cannot directly process this type of signal. The specific function of this module is to receive these SSI signals and convert them into digital signals that a PLC can directly read. As part of the POINT I/O series, it features a compact footprint and offers flexible installation options, allowing it to be mounted exactly where needed. Therefore, when your facility requires this module, selecting a reliable supplier is crucial. We currently have this product in stock and guarantee that it is a genuine, original item, ensuring that you can deploy it in your equipment with complete confidence.
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Series: |
POINT I/O (1734 Series)
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Number of channels: |
Usually 2 channels, meaning one module can connect to two SSI devices simultaneously.
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Supported encoder types: |
Supports absolute value encoders, single-turn and multi-turn.
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Data bit width: |
Very flexible, supporting data transmission from 1 bit to 32 bits, capable of adapting to various precision encoders.
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Communication protocol: |
SSI (Serial Synchronous Interface)
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Power supply: |
Powered through the POINT I/O bus, no separate power supply required.
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Protection level: |
Usually IP20, needs to be used in an electrical cabinet or protective box.
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One of the prominent features of the Allen Bradley 1734-SSI is its signal decoding function. It is important to note that the high-precision encoders used for measuring position and angle in the factory each employ a unique communication method. They use SSI signals - these signals are similar to encrypted telegraph codes - and the PLC itself cannot directly understand these signals. This module is specifically designed to decode these signals. Crucially, it is also equipped with a self-diagnosis function. If the connection line to the encoder becomes loose or disconnected, or if the signal is distorted due to interference, the module will immediately send a status report to the PLC. This enables you to immediately determine the root cause of the problem - without having to test the lines around with a multimeter - thus saving you a lot of time and trouble.
The Allen Bradley 1734-SSI product enables you to complete your work both efficiently and rapidly. First and foremost, engineers are no longer required to expend effort deciphering the raw data output from the encoders. Programming becomes remarkably simple, and projects can be completed ahead of schedule. Furthermore, thanks to precise measurement capabilities and timely error reporting, the machinery is safeguarded against anomalous operation or downtime caused by signal issues. With fewer defective products generated and reduced maintenance requirements, overall factory efficiency naturally improves.
High-Precision Encoder (for measuring angle or position)
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Generates SSI Serial Signals
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Allen Bradley 1734-SSI Receives the Signals
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Internally Converts Signals into Digital Values
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Via the POINT I/O Bus
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Transmits Digital Values to the Programmable Logic Controller (PLC)
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The PLC Performs Precise Calculations and Control
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