Procure 1783-BMS20CL now for robust, high-density machine connectivity
The Allen-Bradley 1783-BMS20CL is an exceptionally efficient Stratix 5700 industrial Ethernet switch designed to consolidate expansive machine-level networks. Outfitted with the «Lite» Cisco firmware, this 20-port device provides the essential managed Layer 2 networking capabilities required for reliable EtherNet/IP communications, without the added cost of advanced routing features. It is the optimal solution for large, self-contained manufacturing skids and discrete assembly lines.
Technical Specifications
- Total Network Ports: 20 active ports.
- Port Layout: Sixteen (16) 10/100 Mbps Fast Ethernet copper ports, two (2) 10/100 Mbps dual-purpose combo ports, and two (2) 100Base-FX SFP module slots.
- Firmware Tier: Lite Software feature set.
- Power Consumption: Maximum of 30 W.
- Input Power: Redundant 12 to 48V DC Class 2/SELV.
- Environmental Immunity: Radiated RF immunity up to 10V/m (IEC 61000-4-3).
Comprehensive Technical Overview
Machine builders often face a critical challenge when designing large systems: connecting dozens of devices without creating an unmanageable cascade of small switches. The 1783-BMS20CL eliminates this architectural bottleneck. With 16 dedicated RJ45 ports, you can wire an entire machine\’s PLC, HMI, and distributed I/O blocks directly into a single central node. The Lite firmware provides vital industrial protocols, including IGMP snooping and Device Level Ring (DLR). DLR allows you to form a fault-tolerant network ring; if a cable is cut by moving machinery, the network heals itself almost instantly, ensuring production never halts. The inclusion of dual SFP slots is crucial for facilities dealing with high Electromagnetic Interference (EMI); it allows the machine cell to connect back to the main plant server via a noise-immune optical fiber link, isolating the control panel from massive electrical surges.
Expert Installation Advice
When deploying this high-density switch, thermal and electrical planning is non-negotiable. The device dissipates up to 30 watts of heat, meaning it must be mounted in an orientation that allows for vertical airflow over its heat-syncing chassis. Electrically, utilize dual redundant DC power supplies to safeguard against primary power loss. Wire the built-in alarm relay (rated for 1 A at 30V DC) directly to a digital input on your PLC; this allows your control system to trigger an HMI warning the exact moment a power feed drops or a designated port loses connection.
Professional Maintenance Tips
Take full advantage of the switch\’s SD card backup capability. By storing the switch\’s configuration and IP address on an industrial SD card, you create a zero-configuration replacement strategy. If the switch hardware is physically damaged, maintenance personnel simply move the SD card to a new 1783-BMS20CL unit, and the network is restored within minutes without utilizing the Cisco command-line interface.
Frequently Asked Questions (FAQs)
Q: What is the difference between the BMS20CL and the BMS20CA?
A: Both have 20 ports. The «L» indicates the Lite firmware tier (basic management), while the «A» indicates the Advanced/Full firmware tier (enhanced security and routing features).
Q: Do I need special software to configure this switch?
A: No, you can configure the 1783-BMS20CL using its built-in Web Device Manager through any standard web browser, or directly within Rockwell\’s Studio 5000 environment.
Q: Are SFP transceivers included?
A: No, Small Form-factor Pluggable (SFP) optical modules are sold separately to allow you to choose the correct wavelength and distance rating for your specific fiber optic runs.
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