The 1769-L30 is a member of the Allen‑Bradley CompactLogix 5370 series, a family of programmable automation controllers known for their balance of performance and affordability. This particular model serves as a versatile processor module for machine control, process automation, and material handling systems. Its compact footprint makes it an excellent choice for control panels with limited space. Many engineers choose this controller for its seamless integration with the Rockwell Automation ecosystem.
Processor and Memory
This controller equips users with 256 Kbytes of user memory, which is sufficient for medium‑complexity logic programs and data handling. For non‑volatile storage, the 1769‑L30 relies on a 1747‑BA battery to retain program and data during power outages. The module supports up to 32 tasks, and each task can accommodate up to 100 separate programs. This flexible architecture allows you to structure your application into manageable, organized routines. Meanwhile, the processor executes logic efficiently for reliable real‑time control.
Communication Ports and Protocols
The 1769‑L30 features two RS‑232 serial ports, providing flexible connectivity options. Channel 0 is a grounded port, while Channel 1 offers electrical isolation for enhanced noise immunity. These ports support multiple protocols, including DF1, DH‑485, and ASCII. As a result, you can connect the controller to a wide range of serial devices such as operator panels, barcode readers, and third‑party instruments. For programming purposes, you can use either the 1747‑CP3 or 1756‑CP3 programming cable to establish a reliable connection with your PC.
I/O Expansion Capabilities
This processor module supports up to 16 1769 Compact I/O modules in a single system. Additionally, you can organize these modules into a maximum of three I/O banks, with each bank requiring its own dedicated power supply. This design gives you the flexibility to distribute I/O points across different physical locations within your machine or process. Moreover, the 1769‑L30 draws 800 mA at +5V DC from the backplane and consumes no current at +24V DC, which simplifies power budgeting for your overall system.
Physical Dimensions and Weight
The module measures 118 mm in height, 50 mm in width, and 87 mm in depth, making it one of the more space‑efficient controllers in its class. With a net weight of just 360 grams, it adds minimal load to your mounting rail or panel. Specifically, the lightweight construction simplifies handling during installation and maintenance.
Temperature and Humidity Ratings
Operational temperature ranges from 0°C to +60°C (32°F to 140°F), which covers most industrial indoor environments. Furthermore, the 1769‑L30 operates reliably in relative humidity between 5% and 95% non‑condensing. This wide humidity tolerance ensures stable performance even in regions with high ambient moisture levels.
Vibration and Shock Tolerance
Engineered for rugged industrial settings, the controller withstands operational vibration of 5G at 10 to 500 Hz and a shock rating of 30G. Consequently, it maintains consistent operation even when mounted on machinery that experiences moderate vibration. For demanding installations, these robust specifications provide added peace of mind.
Electrical Immunity
The module features 1 kV galvanic surge immunity per IEC 61000‑4‑5 and conducts immunity of 10V at 0.15 to 80 MHz per IEC 61000‑4‑6. These certifications confirm its resistance to electrical disturbances commonly found in factory and process environments.
Key Switch and Control Modes
A three‑position key switch on the front panel lets you easily select the operating mode. In the RUN position, the controller executes the user program and enables all outputs. On the other hand, the PROG position places the controller in program mode, which disables outputs and allows you to upload or download logic without unintended machine movement. Finally, the REM position enables remote programming control via the communication ports, offering flexibility for system integration.
Indicators and Diagnostics
LED status indicators provide immediate visual feedback on processor health, communication activity, and I/O status. These diagnostic aids speed up troubleshooting during initial commissioning and routine maintenance. For more detailed diagnostics, you can access the controller's internal status through the programming software.
Mounting and Installation Guide
Mounting Options
The 1769‑L30 supports two mounting methods: panel mounting and DIN rail mounting. Panel mounting uses screws through the module's integrated mounting tabs, while DIN rail mounting offers quick snap‑on installation without special tools. Choose the method that best fits your enclosure layout and maintenance strategy.
System Configuration Rules
Only one 1769‑L30 or any other Logix controller can be installed in a single CompactLogix system at any given time. Additionally, each I/O bank requires a separate power supply. The processor must be placed in the first slot of the first bank, with expansion modules occupying subsequent slots. Following these rules ensures proper backplane communication and system stability.
Cable Requirements
For programming, use the 1747‑CP3 or 1756‑CP3 serial cable, both of which are readily available from Allen‑Bradley distributors. These cables provide a reliable DB‑9 to DB‑9 connection between the controller and a standard PC serial port or USB‑to‑serial adapter.
This product ships with the following items:
1769‑L30 CompactLogix 5370 processor module (one unit)
Removable terminal block (1769‑RTBN18) for field wiring
1747‑BA battery installed
Quick start guide (printed)
Product certification label
Note: Programming cables, mounting hardware, and software are not included and must be purchased separately.
We ship all orders via trusted global carriers including FedEx, UPS, and DHL. Standard delivery typically takes 3 to 7 business days depending on your destination. Express shipping options are also available upon request. All shipments are fully insured and tracked for your peace of mind.
Q1: Can I use the 1769‑L30 with third‑party HMI panels?
Yes, the 1769‑L30 supports ASCII and DF1 protocols via its RS‑232 ports, allowing communication with many third‑party operator interfaces and serial devices. However, you should verify protocol compatibility with your specific HMI manufacturer.
Q2: How many I/O modules can the 1769‑L30 support?
This controller supports up to 16 1769 Compact I/O modules across a maximum of three I/O banks. Each bank requires its own power supply, and the total system length must not exceed the power supply distance rating of four.
Q3: What software do I need to program the 1769‑L30?
You need Rockwell Automation's Studio 5000 Logix Designer (formerly RSLogix 5000) software, version 20 or later. The software supports multiple programming languages including Relay Ladder, Structured Text, Function Block Diagram, and Sequential Function Chart.
Q4: How do I replace the battery on the 1769‑L30?
The 1769‑L30 uses a 1747‑BA battery. To replace it, power off the controller, remove the front cover, gently disconnect the old battery, and plug in a new one. Reinstall the cover and power on the unit. Always replace the battery within the recommended interval to prevent program loss.
Q5: Does the 1769‑L30 support Ethernet communication?
No, this specific model only offers dual RS‑232 serial ports. For Ethernet/IP connectivity, consider other models in the CompactLogix 5370 family such as the 1769‑L30ER, which features built‑in dual Ethernet ports with switch functionality.
| Brand Name | |
| Model No. | 1769-L30 |
| Product Type | Programmable Automation Controller |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
