وصف

Allen-Bradley 1769-L27ERM-QBFC1B CompactLogix Controller

Configured for controller task execution and EtherNet/IP communication in a CompactLogix control system, the Allen-Bradley 1769-L27ERM-QBFC1B (1769-L27ERM-QBFC1B controller) provides processor control, Ethernet connectivity, USB access, and integrated digital and analog I/O.

Hardware Specifications

Parameter	Specification
Model	1769-L27ERM-QBFC1B
Brand	Allen-Bradley
Product Type	CompactLogix Controller
Product Line	CompactLogix
Origin	Not specified in supplied data
Weight	1.75 lb (0.79 kg)
Controller Tasks	32 maximum
Programs per Task	100 maximum
Ethernet Ports	2
USB Ports	1
Controller Connections	256 maximum
Ethernet/IP Nodes	16 maximum
Sockets	32 maximum
User Memory	1 MB
DeviceNet Communication	Supported with 1769-SDN scanner
Digital Inputs	16 DC inputs
Universal Analog Inputs	4
Digital Outputs	16 DC outputs
Analog Outputs	2
High-Speed Counter Modules	4 maximum
High-Speed Module Outputs	4 maximum
Integrated Motion Axes	4 maximum through EtherNet/IP network
UPC	885630101262

EtherNet/IP and I/O Architecture

The 1769-L27ERM-QBFC1B provides two Ethernet ports for EtherNet/IP communication and supports up to 256 controller connections. It also supports up to 16 EtherNet/IP nodes and 32 sockets.

The controller integrates 16 digital DC inputs, 16 digital DC outputs, 4 universal analog inputs, and 2 analog outputs. Therefore, the integrated I/O reduces the need for separate local I/O modules in applications that fit within these channel limits.

The controller supports four integrated motion axes through the EtherNet/IP network. In addition, a 1769-SDN scanner provides DeviceNet communication capability.

Frequently Asked Questions (FAQ)

Q: How many controller tasks can the 1769-L27ERM-QBFC1B execute?
A: The controller supports up to 32 controller tasks, with a maximum of 100 programs assigned to each task.

Q: What communication interfaces does the controller provide?
A: The controller provides two Ethernet ports and one USB port. A 1769-SDN scanner can also provide DeviceNet communication.

Q: How much user memory does the controller provide?
A: The supplied specifications list 1 MB of user memory.

Field Installation Guidelines

Install the controller according to the applicable Allen-Bradley CompactLogix installation documentation and enclosure requirements.

Maintain adequate physical clearance around the controller and connected I/O modules for wiring access and service operations. Use the specified mounting method and secure the module against mechanical movement.

Route Ethernet, I/O, and power wiring separately where practical. Avoid routing communication cables alongside high-current switching conductors for extended distances.

Terminate cable shields and functional grounds according to the electrical design and the applicable Allen-Bradley installation requirements. Do not assume that cable shield termination provides protective-earth bonding unless the installation documentation specifies it.

Verify the controller, I/O configuration, firmware compatibility, network addressing, and connected EtherNet/IP devices before placing the system into normal operation.

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