Overview
The Allen-Bradley 1734-SSI is a Synchronous Serial Interface (SSI) absolute encoder module from the 1734 POINT I/O product family. This encoder interface module collects serial data from absolute encoders that support standard SSI protocol, including linear, rotary, and optical distance-measuring devices. The 1734-SSI provides a single channel of SSI input with RS422 physical interface and MSB-aligned data format, making it ideal for industrial motion control and positioning applications requiring precise encoder feedback.
Key Features
- Single SSI channel for absolute encoder input
- Supports standard SSI protocol with RS422 interface
- Compatible with linear, rotary, and optical encoders
- Removal and Insertion Under Power (RIUP) for hot-swappable module replacement
- Low power dissipation (0.94 W) with efficient backplane design
- Isolated input with 50 V continuous rating, 1250 V dielectric strength (60 s)
Technical Specifications
- Part Number: 1734-SSI (Series C)
- Manufacturer: Allen-Bradley / Rockwell Automation
- Product Family: POINT I/O
- Module Type: SSI Absolute Encoder Input Module
- SSI Channels: 1
- Supply Voltage: 10–28.8 VDC
- POINTBus Current Draw: 110 mA @ 5 VDC
- Power Dissipation: 0.94 W
- Mounting: DIN Rail / G Rail
- Enclosure Type: Open-style (no enclosure)
- Operating Temperature: −20 to +55°C (−4 to 131°F)
- Key Switch Position: 2
- Voltage Isolation: 50 V continuous; withstands 1250 VAC for 60 s
- Physical Interface: RS422 with MSB-aligned data
- Certifications: UL, CE, CUL, C-TICK, GOST, KC, MARINE
- Weight: 0.42 lb
- Condition: New in Box
Typical Applications
The 1734-SSI is commonly deployed in:
- Motion control and positioning systems requiring absolute encoder feedback
- Remote device panels and local control enclosures
- Industrial automation systems needing high-resolution encoder data
- Machine tools and material handling equipment with synchronized positioning
- Robotics and precision assembly operations
Compatibility & Replacements
Compatible With
- POINT I/O base controllers and distributed I/O systems
- Absolute encoders using standard SSI protocol (linear, rotary, optical)
- Wiring base assemblies: 1734-TB and 1734-TBS (key switch position 2)
- Rockwell Automation Integrated Architecture systems
- Remote I/O panels accessed via Ethernet and industrial networks
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering specific replacement models.
Works With
- RSLogix 5000 / Studio 5000 configuration and monitoring software
- DeviceNet industrial network
- POINT I/O distributed I/O architecture
- Rockwell Automation FactoryTalk View HMI systems
- Standard SSI encoder communication protocol
