Product Overview
The Allen-Bradley 1769-L27ERM-QBFC1B is a CompactLogix 5370 L2 controller engineered for scalable, high-performance automation. This industrial automation module integrates a 1MB user memory, dual EtherNet/IP ports, and embedded I/O, making it a versatile choice for machine builders and system integrators. With support for up to four 1769 Compact I/O modules and one expansion bank, the 1769-L27ERM-QBFC1B delivers flexibility without compromising on footprint.
Key Features & Benefits
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1MB User Memory: Ample space for complex control programs and data logging.
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Dual EtherNet/IP Ports: Support linear, ring (DLR), and star topologies for resilient networking.
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Embedded I/O: 16 digital inputs (24 VDC sinking/sourcing), 16 digital outputs (24 VDC sourcing), 4 universal analog inputs, 2 analog outputs, and 4 high-speed counter outputs.
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Integrated Motion: Control up to 16 axes over EtherNet/IP, simplifying multi-axis applications.
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No Battery Required: Built-in energy storage eliminates lithium battery maintenance.
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Removable 1GB SD Card: Provides non-volatile memory for data integrity and easy program transfer.
Technical Specifications
| Specification |
Detail |
| Memory |
1MB |
| Communication Ports |
(1) USB; (2) EtherNet/IP |
| Supported Protocol |
EtherNet/IP |
| Axes over Ethernet |
16 axes |
| Tasks |
32 tasks (100 programs per task) |
| Embedded Inputs |
(16) 24 VDC Sinking/Sourcing |
| Embedded Outputs |
(16) 24 VDC Sourcing |
| Analog Inputs |
4 (Differential or Single Ended) |
| Analog Outputs |
2 (Single Ended) |
| HSC Outputs |
4 |
| Analog Input Types |
Thermocouple (J, K, T, E, R, S, B, N, C), Voltage, Current, RTD (Platinum 385, 3916, Copper 426, Nickel 672, 618, Nickel-Iron 518), Resistance |
| Analog Output Types |
Voltage: 0-5V, 1-5V, 0-10V, -10V to +10V; Current: 0-20 mA, 4-20 mA |
| Programming Languages |
Relay Ladder (Safety Task only), Structured Text, Function Block, SFC |
| Mounting |
DIN Rail |
| Wire Type |
Copper, 90°C |
| Wire Size (Solid) |
22 to 14 AWG |
| Wire Size (Stranded) |
22 to 16 AWG |
| Shipping Weight |
3 lbs |
| Shipping Dimensions |
11 x 8 x 6 in |
| Replacement Terminal Block |
1769-RTBN18 |
Applications
The 1769-L27ERM-QBFC1B excels in a variety of industrial settings. In packaging machinery, its high-speed counter inputs and integrated motion control ensure precise synchronization. For material handling systems, the dual EtherNet/IP ports enable seamless integration with SCADA and MES. In process control, the universal analog inputs accept thermocouples and RTDs, making it ideal for temperature and flow monitoring.
Installation & Setup
Mount the 1769-L27ERM-QBFC1B on a standard DIN rail. Use copper wire rated for 90°C; solid wire 22-14 AWG or stranded 22-16 AWG. Connect power (24 VDC) to the built-in supply. For expansion, attach up to four 1769 Compact I/O modules to the right side. Configure the EtherNet/IP ports using the USB port for initial setup. The controller supports DLR, linear, and star topologies, so plan your network accordingly.
Maintenance & Reliability
The 1769-L27ERM-QBFC1B eliminates battery replacement thanks to its built-in energy storage. Periodically check the removable 1GB SD card for proper seating and data integrity. Keep the controller free of dust and moisture to ensure reliable operation. With no moving parts and robust construction, the unit offers long service life, reducing downtime and total cost of ownership.
Compatibility & Integration
The 1769-L27ERM-QBFC1B communicates via EtherNet/IP, supporting 120 TCP connections, 256 CIP connections, and up to 256 CIP unconnected messages. It can interface with HMI, SCADA, DCS, OPC servers, protocol converters, and third-party analysis tools. For distributed I/O, it works with Allen-Bradley Flex I/O and POINT I/O families. The controller also supports DeviceNet via 1769-SDN module.
Buying Guide
When purchasing the 1769-L27ERM-QBFC1B, verify your I/O requirements and network topology. Ensure you have the correct terminal block (1769-RTBN18) and power supply. For expanded I/O, order compatible 1769 modules. PLC Source PRO offers genuine Allen-Bradley parts with fast shipping and expert support. Check stock availability and lead times to keep your project on schedule.