1756L74 Allen Bradley PLC

1756L74 Allen Bradley PLC Specification

Operating Temperature
0 C to 60 C

Usage
For industrial automation and control systems

Power Source
External power supply required (via chassis)

Thermal Conductivity

Resolution

Response Time
Fast, depends on program and I/O type

Processor Speed
2 MB Flash memory, high performance processor

Display Type
LED status indicators

Output
Digital/Analog (via corresponding I/O modules)

Components
Processor, RAM, Non-volatile memory, Communication port

Features
Hot-swappable, redundant power, integrated secure communications, high-speed processing

Power Supply
Redundant and Integrated Power Supply capability

Input
Digital/Analog (via corresponding I/O modules)

Interface
USB, EtherNet/IP, ControlNet, DeviceNet (via modules)

Sensors Specification
Supported via modules, not direct

IP Rating
IP20

Product Type
ControlLogix 5570 Controller

Application
Factory automation, process control, machinery management

Rated Voltage
24V DC

Supply Voltage
24V DC

Size
Standard chassis mount (1756 series)

Dimension (L*W*H)
145 x 52.5 x 142 mm

Function
Programmable Logic Controller (PLC)

Color
Black/Grey

Weight
~0.35 kg

Capacity
32 MB user memory, 1 MB I/O memory

Thickness
51 mm

Current Rating
1200 mA at 5.1V DC, 14 mA at 24V DC

Frequency

Redundancy Support
Yes (with specific controller and chassis configurations)

Supported Programming Languages
RSLogix 5000 (Ladder, Function Block, Structured Text, Sequential Function Chart)

Battery Type/Back-up
Lithium battery supported for memory backup

Mounting Type
DIN Rail/Panel Mount (through chassis)

Firmware Upgrade Capability
Yes, via USB or RSLogix software

Memory Type
Non-volatile CompactFlash backup supported

Number of I/O Points
Up to 128,000 digital I/O

Communication Ports
USB 2.0, supports EtherNet/IP, ControlNet, DeviceNet (through modules)

Compliance Standards
CE, c-UL-us, RCM, KC, Ex, ATEX approved

Chassis Type
Compatible with all 1756 standard and redundant chassis

Maximum Number of Tasks
32

About 1756L74 Allen Bradley PLC

Allen-Bradley 1756-L74 ControlLogix Logix5574 Processor with 16 Mbytes Memory

1756-l74 ControlLogix Programmable 1756L74

Mounting Type

DIN Rail

Output Type	Analog
Brand	ALLENBRADLEY
Manufacturer Series	MicroLogix 1400
I/O Points	relay outputs
Usage/Application	Automation
Minimum Order Quantity	1

Mfr. Part Number:	1756-L74
Manufacturer:	Allen-Bradley / Rockwell Automation
Description:	Allen-Bradley 1756-L74 ControlLogix Logix5574 Processor with 16 Mbytes Memory
Full Description:	Allen-Bradley 1756-L74 ControlLogix Logix5574 Controller with 16 Mbytes Memory and 1 x Built-in USB 2.0 Programming/Download Port
UPC / GTIN:	10612598876041
Status:	Current Product

Advanced Automation and Control

Designed for industrial automation, the 1756L74 PLC provides powerful control capabilities for complex machinery and process management. Its flexible connectivity and high-speed processing ensure responsive control, maximizing productivity in manufacturing and industrial operations.

Efficient Memory and I/O Handling

With 32MB user memory and 1MB I/O memory, the 1756L74 manages vast amounts of data from up to 128,000 digital I/O points. Non-volatile CompactFlash backup secures your programs and data, while lithium battery support maintains vital operations during power loss.

Flexible Communication and Integration

Supporting USB 2.0, EtherNet/IP, ControlNet, and DeviceNet (via modules), the PLC seamlessly integrates within diverse automation architectures. Secure communications are embedded, making system expansion, upgrades, and troubleshooting straightforward and efficient.

FAQ's of 1756L74 Allen Bradley PLC:

Q: How is memory backup achieved in the Allen Bradley 1756L74 PLC?

A: The 1756L74 PLC utilizes non-volatile CompactFlash and a lithium battery to maintain controller program and data integrity. This ensures backup retention during power disruptions or controller swaps, reducing downtime in critical operations.

Q: What types of communication interfaces are supported by the 1756L74 PLC?

A: It has a built-in USB 2.0 port and supports EtherNet/IP, ControlNet, and DeviceNet networks through appropriate modules, enabling flexible integration with industrial systems and remote programming or monitoring via RSLogix 5000 software.

Q: When should I consider using redundancy features with the 1756L74 PLC?

A: Redundancy is recommended for mission-critical systems where uninterrupted operation is essential. The 1756L74 supports redundant controllers and power supplies when configured with compatible chassis, ensuring high availability in automation processes.

Q: Where can the 1756L74 PLC be mounted within an industrial setup?

A: The controller is designed for DIN rail or panel mounting when installed in any standard or redundant 1756 chassis. Proper mounting ensures stability, secure electrical connections, and compliance with IP20 protection ratings.

Q: What is the process for upgrading the firmware of the 1756L74 PLC?

A: Firmware upgrades are performed via USB or through RSLogix software. Simply connect to the USB port, initiate the upgrade process in the software, and follow guided steps to update the controller, benefiting from enhanced features and reliability.

Q: How can the 1756L74 PLC be utilized in factory automation and process control?

A: Its high-speed processor, flexible I/O expansion, and multiple programming languages (Ladder, Function Block, Structured Text, Sequential Function Chart) allow tailored solutions for automated assembly lines, machinery management, and process monitoring.

Q: What advantages does the 1756L74 PLC offer over other controllers?

A: Key benefits include scalable memory, extensive I/O capacity, fast response times, secure and redundant operation capability, and broad compliance with international safety standards. These factors make it ideal for modern, large-scale automation initiatives.

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