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Brand: Allen-Bradley
Allen-Bradley 1769-L36ERM CompactLogix 5370 L3 Controller
Description
A 3 MB controller for larger machines with CIP motion
The Allen-Bradley 1769-L36ERM is a CompactLogix 5370 L3 controller with 3 MB of user memory and dual Ethernet ports with Device Level Ring capability. It is one of the larger Compact I/O based controllers, intended for machines with many local modules, networked devices and servo axes.
The manufacturer description lists support for 30 local I/O expansion modules, 48 EtherNet/IP nodes and 16 axes of CIP motion with the kinematics function. A 1 GB SD card ships with the controller and a 2 GB card can be used instead.
Technical specifications
| Parameter | Specification |
|---|---|
| Catalog number | 1769-L36ERM |
| Controller family | CompactLogix 5370 L3 |
| User memory | 3 MB |
| Local expansion modules, max | 30 Compact I/O modules |
| EtherNet/IP nodes | 48 (product page) |
| Motion | 16 axes of CIP motion with kinematics (product page) |
| Ethernet ports | 2, with Device Level Ring capability |
| Power supply | External Compact I/O supply: 1769-PA2, 1769-PB2, 1769-PA4 or 1769-PB4 |
| Non-volatile memory | 1784-SD1 card (1 GB) ships with the controller; 1784-SD2 (2 GB) ordered separately |
| Isolation | 30 V continuous, basic insulation type (USB and Ethernet per product page) |
| Power dissipation | 4.5 W at full load (product page value) |
| Surrounding air, max | 60 C |
| Relative humidity | 5 to 95 percent non-condensing |
| Enclosure | None (open-style) |
| Approvals listed for the family | c-UL-us including Class I Division 2; UKCA and CE; RCM; KC; EtherNet/IP conformance tested |
Typical use
The L36ERM is chosen when a single machine has coordinated servo drives, a long row of Compact I/O and several Ethernet devices. CIP motion over EtherNet/IP lets the drives be controlled from the same project, so that gearing, cams and kinematics are handled by one controller.
Selection and power notes
Unlike the embedded-I/O L2 controller, this model has no built-in points and needs a separate Compact I/O power supply, with the 1769-PA2, PB2, PA4 and PB4 listed in the data sheet. Check the supply distance rating and the current budget of all thirty possible modules before design. The values for nodes, axes and dissipation come from the product page, while certifications and environmental limits are in the linked data sheet.
In Gulf plants the L3 class is typically specified for filling lines, packaging machines and utility skids where one controller has to manage motion and a long I/O row together. Confirm the exact catalog number and any suffix with the manufacturer before ordering. The controller dissipates 4.5 W per the product page, and the hardware has no embedded points, so panel layout is simpler than with the L2 model: the I/O sits entirely on the Compact I/O row to the right.
Remember that software and firmware compatibility must be checked in the Studio 5000 Logix Designer release for the selected firmware, and that the SD card holds the program for quick recovery.
Related Allen-Bradley products: Allen-Bradley 1769-L30ER CompactLogix 5370 L3 Controller 1 MB, Allen-Bradley 1769-L33ER CompactLogix 5370 L3 Controller 2 MB, Allen-Bradley 1769-L16ER-BB1B CompactLogix 5370 L1 Controller, Allen-Bradley 5069-L306ER CompactLogix 5380 Controller, Allen-Bradley 5069-L350ERM CompactLogix 5380 Controller and Allen-Bradley 5069-L320ER CompactLogix 5380 Controller.
Documents and quotation
The linked technical data covers the CompactLogix 5370 family. Related controllers are listed in the PLC & I/O Cards category. Send the catalog number and quantity to Seven Star LLC, an independent supplier in Muscat, with your project requirements to request a quotation.
Datasheets & Documents
- Technical data Rockwell Automation CompactLogix 5370 Controllers Specifications, publication 1769-TD005 Download
Reviews (0)
About brand
Allen-Bradley is the brand of Rockwell Automation for industrial control: ControlLogix and CompactLogix controllers, I/O systems, PanelView operator terminals, PowerFlex drives, motor control and industrial network equipment. The company began in Milwaukee in 1903, when Lynde Bradley and Dr. Stanton Allen formed the Compression Rheostat Company to make the motor speed controller Bradley had invented in 1901. It took the name Allen-Bradley in 1909 and was bought by Rockwell International in 1985. Since 2001 its owner has been Rockwell Automation, which is still headquartered in Milwaukee, Wisconsin.
Allen-Bradley company profile
| Founded | 1903, Milwaukee, Wisconsin, USA, as the Compression Rheostat Company |
|---|---|
| Founders | Lynde Bradley (inventor of the compression rheostat, 1901) and Dr. Stanton Allen (investor); Harry Bradley joined in 1904 |
| Name | Allen-Bradley Company from 1909 |
| Ownership | Acquired by Rockwell International in 1985 for about USD 1.65 billion; a brand of Rockwell Automation (NYSE: ROK) since 2001 |
| Headquarters | Milwaukee, Wisconsin, USA |
| Product families | Logix programmable automation controllers (ControlLogix, CompactLogix), legacy SLC 500 and MicroLogix PLCs, Micro800 controllers, POINT, FLEX and Compact I/O, PanelView HMIs, PowerFlex AC drives, contactors, motor starters and soft starters, safety components, Stratix Ethernet switches |
Milestones
- 1901: Lynde Bradley invents the compression rheostat to control the speed of electric motors.
- 1903: The Compression Rheostat Company is formed in Milwaukee with an initial investment of USD 1,000.
- 1904: Harry Bradley joins; a crane controller is shown at the St. Louis World's Fair.
- 1909: The company is renamed Allen-Bradley.
- 1985: Rockwell International acquires Allen-Bradley.
- 2001: Rockwell Automation becomes the company's name; the Allen-Bradley brand marks 100 years in 2003.
Reading Allen-Bradley catalogue numbers
The first digits of an Allen-Bradley catalogue number identify the platform, which tells you what is compatible with what. 1756 is ControlLogix (chassis-based, used for large process and plant control), 1769 is CompactLogix 5370 with Compact I/O, 5069 is CompactLogix 5380 with Compact 5000 I/O, 1734 is POINT I/O, 1794 and 5094 are FLEX and FLEX 5000 distributed I/O, 1746 and 1747 belong to the older SLC 500 family, 1766 is MicroLogix 1400 and 2080 is Micro800. For drives, 25B is PowerFlex 525 and 22B is PowerFlex 40; in a code such as 25B-D010N114, "D" means 380–480 V, "010" is the output current rating, and N114 instead of N104 means the drive has an integrated EMC filter. Many plants in the region still run SLC 500 and older MicroLogix systems, which Rockwell has discontinued, so exact spares and migration to CompactLogix are both common requests.
Where Allen-Bradley products are used
In Oman and the GCC, Allen-Bradley controllers and drives run on oil and gas facilities, water treatment and pumping stations, cement, food and beverage and packaging plants, and on machines supplied by American OEMs. ControlLogix is often the platform for plant control systems, while PowerFlex drives are used on pumps, fans and conveyors.
Allen-Bradley products we list
| Family | Examples |
|---|---|
| ControlLogix | 1756-L85E, 1756-EN2T, 1756-EN2TR, 1756-IF16, 1756-IB32, 1756-PA75, 1756-A10 |
| CompactLogix and Micro controllers | 5069-L320ER, 5069-L340ERM, 1769-L33ER, 1769-L16ER, MicroLogix 1400, Micro820, SLC 500 (1746) |
| Distributed I/O | 1734-AENTR, 1734-IB8, 1734-IE2C, 1734-IB8S safety, 1794-AENTR, 5094-AENTR, 5069-IF8 |
| Operator terminals | PanelView Plus 7 10-inch, PanelView Plus 7 15-inch, PanelView 800, PanelView 5310 |
| Drives, motor control and networking | PowerFlex 525, PowerFlex 755, PowerFlex 4, 150-A180NBD SMC, Stratix 2000, 1783-NATR |
Ordering Allen-Bradley products: what we need
Send the full catalogue number and the series letter from the label (for example 1756-EN2T Series D), because firmware and compatibility can change between series. For drives, add the motor power, voltage and filter option. For a discontinued SLC 500 or MicroLogix part, tell us whether you need the exact spare or a migration proposal.
Facts checked against Rockwell Automation's published company history, October 2026.
Browse Allen-Bradley products by category: PLC & I/O Cards, AC Drives.
FAQ
Questions about the Allen-Bradley 1769-L36ERM CompactLogix 5370 L3
Answers from our engineering team on installation, compatibility and integration.
01How much memory does the 1769-L36ERM have?
3 MB of user memory.
02How many local Compact I/O modules can it support?
Up to 30.
03How many motion axes does it support?
16 axes of CIP motion with kinematics, per the product page.
04Does it have embedded I/O?
No, it needs Compact I/O modules and an external supply.
05What memory card ships with it?
A 1 GB 1784-SD1 card; a 2 GB card can be used.
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