📘 Allen-Bradley 1769-L27ERM CompactLogix Controller — Product Overview
The Allen-Bradley 1769-L27ERM CompactLogix Controller is a high-performance programmable automation controller (PAC) designed for medium-to-small-scale industrial control applications. It provides flexible, scalable control for manufacturing, process automation, and motion control systems. This controller combines integrated I/O capabilities, Ethernet/IP communication, and real-time processing, making it ideal for distributed control architectures requiring both reliability and high-speed operation.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L27ERM |
| Product Type | CompactLogix Controller |
| Controller Type | Embedded Ethernet / Medium Memory |
| CPU Memory | 1 MB user memory |
| Program Scan Time | ≤ 1 ms per 1000 instructions |
| Ethernet Ports | 1 Integrated 10/100 Mbps Ethernet port |
| Backplane I/O | 1769 Compact I/O modules support |
| Analog I/O Support | Yes, via 1769 Analog modules |
| Digital I/O Support | Yes, via 1769 Digital modules |
| Communication Protocols | Ethernet/IP, DeviceNet, ControlNet |
| Motion Control Support | Basic motion control, sequencers, and servo integration |
| Power Supply | 24 V DC ±10% |
| Power Consumption | 6 W typical, 10 W maximum |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% non-condensing |
| Dimensions (W x H x D) | 90 mm × 130 mm × 75 mm |
| Weight | 0.8 kg |
| Mounting Type | DIN rail or panel mount |
| Certifications | CE, UL, cUL, RoHS |
| Safety Features | Built-in fault detection, CPU watchdog, I/O status monitoring |
🛠️ Key Features
- Compact Design: Small footprint allows installation in limited-space control cabinets.
- Integrated Ethernet/IP: Enables seamless connectivity with other Rockwell Automation devices and third-party industrial systems.
- Scalable Control: Supports up to 64 modules on the 1769 Compact I/O backplane, allowing system expansion as needed.
- Fast Processing: Optimized CPU for high-speed execution of logic, communication, and motion tasks.
- Robust Reliability: Built-in diagnostics, fault detection, and environmental tolerance ensure continuous operation.
- Motion and Sequencing Support: Basic motion control and sequencing integrated for compact automation solutions.
- Flexible Programming: Compatible with Studio 5000 Logix Designer software for ladder logic, structured text, and function block programming.
🛠️ Installation and Maintenance Guidelines
Installation
- Ensure the 24 V DC power supply is disconnected before mounting the controller.
- Secure the controller on a DIN rail or panel with proper ventilation to avoid overheating.
- Connect the 1769 Compact I/O modules following the backplane layout to ensure proper communication.
- Configure Ethernet/IP network settings according to your system architecture.
- Verify wiring integrity and polarity before powering the controller.
Maintenance
- Regularly inspect connectors, backplane, and wiring for loose connections or signs of wear.
- Clean the controller and surrounding area with a dry cloth to prevent dust accumulation.
- Monitor system diagnostics and I/O status to detect early signs of faults.
- Update firmware and Logix Designer software to maintain compatibility with the latest features.
- Ensure environmental conditions remain within specified operating temperature and humidity ranges.
🔗 Additional Resources
🔄 Similar Products
| Model | Memory | Ethernet Ports | I/O Support | Mounting Type |
|---|---|---|---|---|
| 1769-L24ER | 512 KB | 1 | Compact I/O | DIN rail / Panel |
| 1769-L30ERM | 1 MB | 1 | Compact I/O | DIN rail / Panel |
| 1769-L32E | 2 MB | 2 | Compact I/O | DIN rail / Panel |
| 1769-L35E | 2 MB | 2 | Compact I/O | DIN rail / Panel |
| 1769-L43 | 4 MB | 2 | Compact I/O | DIN rail / Panel |
