1769-L30ER Allen-Bradley 5370 L3 Programmable Automation Controller
Manufacturer: Allen Bradley
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Part Number: 1769-L30ER
Condition：New with Original Package
Product Type: Programmable Automation Controllers
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1769-L30ER CompactLogix 5370 L3 Controller
The Allen-Bradley 1769-L30ER, also cataloged as the 1769-L30ER Programmable Automation Controller, operates as a dedicated hardware component for integrated control, dual-port Ethernet networking, and motion interface processing within the CompactLogix 5370 L3 platform.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L30ER |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 1.06 lbs (0.48 kg) |
| Dimensions | Standard 5370 L3 Chassis Profile |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | 4.5 W Maximum Power Dissipation |
| User Memory | 1 MB |
| Controller Capacity | 32 Tasks; 100 Programs per Task |
| Local I/O Module Capacity | Up to 16 local 1769 I/O modules |
| Integrated Network Ports | 2 x 10/100 Mbps Ethernet Ports, 1 x USB 2.0 Port |
| Network Node Capacity | Up to 16 Ethernet/IP Nodes |
| Motion Control Axis Capacity | Up to 4 motion axes over Ethernet/IP (CIP Motion) |
| Current Draw | 500 mA at 5 VDC / 225 mA at 24 VDC (Base specification); 1.0 A at 5 VDC Max Backplane allocation |
| Isolation Voltage | 30 V continuous |
| Storage Media | SD Card Slot |
| Enclosure Type | Open-Style |
| Certifications | CE, UL, CSA, IECEx, ATEX |
Deterministic Network Architecture
The embedded dual Ethernet ports utilize an internal switch mechanism to execute Device Level Ring (DLR) network topologies directly at the machine level, providing alternate routing paths during physical cable breakage. Backplane bus communication velocity remains fixed for local 1769 modules while the integrated processor engine handles deterministic CIP Motion and CIP Sync protocols. This dedicated network setup permits I/O density scaling up to 16 local modules and synchronizes up to 4 motion axes via EtherNet/IP deterministic networks without requiring specialized external hardware interfaces. Firmware flash compatibility checks protect the internal memory execution paths from non-deterministic scan interruptions.
Frequently Asked Questions
Q: How does the 1769-L30ER controller handle physical network failures when wired in a ring configuration?
A: The dual Ethernet ports support Device Level Ring (DLR) topology. When a break occurs in the network ring, the controller detects the loss of beacon packets and shifts the communication path within milliseconds to maintain active connection states with external nodes.
Q: Can local 1769 I/O modules be hot-swapped while this controller is actively executing logic?
A: No, the CompactLogix 5370 L3 hardware platform does not support Removal and Insertion Under Power (RIUP). Attempting to remove or insert a module while the backplane is energized will disrupt bus communications and trigger a major controller fault.
Q: What is the purpose of the built-in USB 2.0 port during field deployment?
A: The integrated USB port functions exclusively as a local programming, configuration, and firmware flash interface. It cannot be used to bridge network traffic or connect standard industrial serial peripherals.
Field Installation Guidelines
- Chassis Rail Grounding: Mount the controller onto an open-style, zinc-plated steel DIN rail. Ensure a direct copper grounding strap connects the rail structure to the main equipment enclosure ground to mitigate electromagnetic interference.
- Module Bus Retention: Slide the adjacent 1769 I/O module into the side tongue-and-groove guides of the controller, then fully slide the bus levers to the locked position to ensure internal electrical contact across the multi-pin backplane.
- Ethernet Cable Routing: Route all Category 5e or Category 6 industrial-grade shielded twisted-pair (STP) Ethernet cables away from high-voltage motor supply lines and variable frequency drives to prevent inductive noise coupling.
- Environmental Clearances: Maintain a mandatory 50 mm clearance zone above, below, and to the sides of the controller housing to permit natural convective airflow and prevent internal heat accumulation.