Allen-Bradley 1769-L19ER-BB1B CompactLogix 5370 L1 Controller
The Allen-Bradley 1769-L19ER-BB1B, also cataloged as the 1769-L19ER-BB1B CompactLogix 5370 L1 Controller, operates as a dedicated hardware component for logic execution and discrete signal processing within EtherNet/IP networks. The unit combines 1 MB of user memory, embedded 24 VDC I/O (16 sinking inputs and 16 sourcing outputs), and a POINT Bus backplane interface to drive local automation tasks directly while supporting network communication across dual EtherNet/IP ports with Device Level Ring (DLR) topology.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L19ER-BB1B |
| Brand | Allen-Bradley |
| Origin | Singapore |
| Weight | 0.91 kg (2.00 lbs) |
| Dimensions | 138 x 100 x 130 mm |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 1 A at 5 VDC (11.5 W max power dissipation) |
| Power Supply Input | 24 VDC only |
| User Memory | 1 MB |
| Non-Volatile Memory | 1 GB SD card included (supports up to 2 GB) |
| Embedded Discrete I/O | 16 24 VDC inputs (sink), 16 24 VDC outputs (source) |
| Expansion Capacity | Up to 8 1734 POINT I/O modules |
| EtherNet/IP Nodes | 8 nodes maximum |
| Communication Ports | 2 Ethernet RJ-45 (DLR capable), 1 USB Type-B client |
Industrial Control & Drive Integration
The controller utilizes backplane bus communication velocity to manage execution timing across 32 concurrent controller tasks and up to 8 local 1734 POINT I/O expansion modules. EtherNet/IP deterministic networks deliver scheduled I/O message delivery and low-jitter packet exchange over dual-port DLR ring topologies. Continuous firmware flash compatibility checks maintain synchronization between controller execution loops, internal memory allocations, and connected network nodes.
Frequently Asked Questions
Q: Can the 1769-L19ER-BB1B controller be powered directly using 120/240 VAC mains?
A: No, the 1769-L19ER-BB1B operates exclusively on a 24 VDC external power supply. Applying AC line voltage directly to the supply terminals will damage internal electronics.
Q: Does the POINT Bus expansion backplane on this controller support Removal and Insertion Under Power (RIUP)?
A: No, the local expansion interface on the 1769-L19ER-BB1B does not support RIUP. Disconnecting or inserting local expansion modules while the 24 VDC power supply is active causes backplane bus faults and risks damaging the module connector pins.
Field Installation Guidelines
Mount the controller vertically onto a standard 35 mm DIN rail inside an IP54-rated industrial enclosure. Maintain a minimum clearance of 50 mm above, below, and on the sides of the chassis to allow adequate air circulation for heat dissipation. Route 24 VDC power wiring using copper conductors rated for at least 90 deg C, keeping DC supply wiring strictly segregated from high-voltage AC lines. Connect dual Ethernet cables in a closed loop when using DLR topologies, and clamp all Ethernet cable shielding directly to the panel earth ground bus bar.
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|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
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