Allen-Bradley 1769-L30ER CompactLogix Controller

Allen-Bradley 1769-L30ER CompactLogix Programmable Automation Controller

Product Introduction

The 1769-L30ER belongs to the CompactLogix 5370 L3 series. This programmable automation controller delivers reliable control for mid-range applications. It features 1MB of embedded memory and two Ethernet communication ports. Additionally, it includes one USB port for local programming. You can connect up to eight 1769 Compact I/O modules directly. Moreover, the system supports three expansion banks for larger layouts. Many engineers choose this model for its balance of cost and performance.

Key Technical Specifications

The 1769-L30ER processor module uses Ethernet as its primary communication method. Both Ethernet ports support 10/100 Mbps speeds. They also function as an embedded switch, meaning both ports share the same network traffic. This controller supports up to 16 Ethernet nodes. For instance, you can connect HMIs, SCADA systems, or gateways. Furthermore, the USB port provides quick local access for programming or firmware updates.

You can assign an IP address using two methods. First, use the BOOTP-DHCP utility from Allen-Bradley. Second, configure it manually through the programming software. The onboard non-volatile memory comes via a 1784-SD1 card with 1GB storage. Optionally, you can upgrade to a 1784-SD2 card with 2GB space. This SD card automatically loads the user program. Therefore, it prevents unexpected stoppages if the main energy storage fails.

Supported I/O and Expansion

Specifically, the 1769-L30ER allows eight 1769 Compact I/O modules per bank. With three banks, you can expand significantly. However, you must follow the power supply distance rating. The controller must sit within four modules of the power supply. Compatible power supplies include 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4. This rule ensures stable power delivery across all modules.

Mechanical and Environmental Parameters

The operating temperature ranges from 0°C to +60°C (+32°F to +140°F). Use copper wire rated for 90°C. Solid wire size can be 22 to 14 AWG. Stranded wire size should be 22 to 16 AWG. Vibration tolerance is 5G from 10 to 500 Hz, with 0.030 inches peak-to-peak. Additionally, the unit carries cULH certification for Class I, Division 2 hazardous locations.

Mounting and Installation Guide

You can mount the 1769-L30ER on a DIN rail or a panel. Either method requires a 50 mm (2 inches) clearance on all sides. This space allows proper airflow and prevents overheating. The shipping dimensions are 11 x 8 x 6 inches. Use a standard RJ45 connector according to IEC 60603-7 for programming. The replacement terminal block part number is 1769-RTBN18. Moreover, the battery type is 1747-BA for real-time clock backup.

Communication Topologies

The dual Ethernet ports support three network topologies. First, Device Level Ring (DLR) offers fault tolerance with primary and secondary paths. If one path fails, data routes automatically with no noticeable delay. Second, linear topology connects devices point-to-point. However, a single cable break stops communication. Third, traditional star topology uses a central switch. This method centralizes data but adds a single point of failure. For long distances, you can convert to fiber optic communication.

Packaging List

• 1 x Allen-Bradley 1769-L30ER processor module

• 1 x 1784-SD1 1GB SD card (shipped with controller)

• 1 x 1769-RTBN18 replacement terminal block (included)

• 1 x 1747-BA battery

• 1 x Quick start guide (printed)

Note: This package does not include certificates or warranty documents.

Shipping Methods

We ship using Fedex, UPS, or DHL. All orders include tracking information.

Frequently Asked Questions (FAQ)

1. Can I use the 1769-L30ER with more than eight I/O modules?
Yes, you can use up to three expansion banks. Each bank supports eight modules, giving you a total of 24 modules.

2. What happens if the internal energy storage fails?
The 1784-SD1 card stores your program as non-volatile memory. The controller automatically loads the program from the SD card, so you will not lose data.

3. Does the 1769-L30ER support Device Level Ring (DLR) topology?
Yes, it does. The dual Ethernet ports act as an embedded switch. DLR provides fault tolerance by using primary and secondary paths automatically.

4. How do I assign an IP address to this controller?
You have two options. First, use the Allen-Bradley BOOTP-DHCP utility. Second, assign it manually through the programming software.

5. What is the power supply distance rating for the 1769-L30ER?
You must install this controller within four modules from the power supply. Compatible supplies include 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4.