Product Summary
The 1747-SN is a critical communication module for your SLC 500 system. It acts as a Remote I/O scanner to link processors, HMIs, and other devices. This module supports high-speed data transfer across long cable distances.
Theme A: Product Procurement & Buyer Guide for the 1747-SN
Understanding the 1747-SN Core Function
Your system needs reliable communication between controllers and remote devices. The 1747-SN fulfills this role as a dedicated scanner module. It requests I/O status updates and messages from RIO adapters. This module works with SLC 5/02, 5/03, 5/04, and 5/05 processors. You can connect up to sixteen devices in normal mode. In complementary mode, you can connect up to thirty-two devices.
Critical Cable and Distance Specifications
You must use the correct cable for stable network operation. The 1747-SN requires a Belden 9463 communication cable. This setup allows a maximum cable length of 3048 meters (10000 ft). The module transfers data at a rate of 57.6 Kbaud over this full distance. For higher speeds, you can use a rate of 230.4 Kbaud. However, this higher rate limits the cable length to 762 meters (2500 ft). You must terminate the daisy-chain network with an 82-Ohm resistor.
Electrical and Environmental Requirements
Your control cabinet must meet specific environmental conditions for this module. The 1747-SN operates within a temperature range of 0 to 60 degrees Celsius. It functions properly at a relative humidity of 5 to 95% without condensation. The module draws 600 milliamps from the 5-volt backplane supply. It also draws 90 milliamps from the 24-volt backplane supply. The module weighs only 1 pound (0.45 kilograms) and fits in a single slot.
Configuring Baud Rates with DIP Switches
You must set the correct communication speed for your network. The 1747-SN provides four selectable baud rates for this purpose. You configure these rates using two physical DIP switches on the module. Switch 1 and Switch 2 determine the exact transmission speed. This simple hardware setup allows for quick field configuration without software.
Agency Certifications for Global Use
This module holds essential certifications for industrial installations. It is UL and C-UL listed for Class I, Division 2 environments. The 1747-SN also carries the CE mark for European directives. It meets C-Tick requirements for applicable Australian acts. These certifications ensure you can deploy this module in many global locations.
Key Technical Specifications
The module uses one RIO communication port with a three-pin terminal. It supports remote I/O passthru for advanced diagnostics. The 1747-SN also allows for downloading and uploading of the controller. It has a non-operational storage temperature range of -40°C to +85°C.
Logistics & Standard Packaging Details
- One Allen-Bradley 1747-SN Remote I/O Scanner Module
- This product ships in an anti-static protective package
- We offer express delivery shipping via FedEx, UPS, and DHL
