1756-A4K Rockwell ControlLogix Digital I/O Module | Allen-Bradley PLC Input Card, 1756 Series Automation Component

1756-A4K

Allen-Bradley 1756-A4K

Rockwell ControlLogix 1756A4K

1756-A4K

The Allen-Bradley 1756-A4K is a Rockwell ControlLogix 1756A4K series module designed for industrial automation, delivering reliable performance and seamless integration in complex control systems.

Specification

SEODescription

The Allen-Bradley 1756-A4K (also known as Rockwell ControlLogix 1756A4K) is a 4-slot ControlLogix chassis designed for industrial automation systems. It supports up to four local I/O or communication modules, with a built-in power supply delivering 5V DC (3.3A) and 24V DC (1.2A) to connected modules. The chassis operates within 85-265V AC (47-63Hz) input voltage and functions in temperatures from 0-60°C. Compatible with ControlNet, EtherNet/IP, and DeviceNet modules, it is widely used in manufacturing, process control, and energy industries. Its key advantages include modular scalability, robust construction, and seamless integration with Rockwell's ControlLogix ecosystem. However, its fixed slot capacity limits expansion flexibility, and the AC-powered design may require additional components for DC-only environments. The 1756-A4K ensures reliable performance in high-demand applications requiring distributed control and real-time data processing.

SEOSpecification

Parameter	Specification
Product Model	1756-A4K
Manufacturer	Allen-Bradley (Rockwell Automation)
Series	ControlLogix 1756
Input Voltage	24V DC (±10%)
Operating Temperature	-20°C to 60°C (-4°F to 140°F)
Mounting Type	DIN Rail or Panel Mount
Certifications	cULus Listed, CE, ATEX/IECEx (Optional)
Communication Protocols	EtherNet/IP, ControlNet, DeviceNet
Module Type	ControlLogix Digital I/O Module
I/O Points Capacity	16 Points (Configurable)
Memory	Embedded non-volatile storage
Backplane Compatibility	1756 Series Chassis
Protection Rating	IP20 (Base)
Weight	450g (0.99 lb)
Dimensions (HxWxD)	135 x 60 x 87 mm
Firmware Support	RSLogix 5000, Studio 5000

SEOQandA

question:Why is the shipping cost so high? Are there more economical options?
answer:Shipping costs depend on logistics partners and package specifics. We offer sea/land freight for cost-effective alternatives upon request.
question:Can you provide upgraded models or alternative products?
answer:Yes, we offer upgraded or alternative models. Please share your requirements for tailored recommendations.
question:Do you offer discounts for bulk orders?
answer:Yes, bulk orders qualify for volume discounts. Contact us for a customized quote based on quantity.

SEOQandA_Product

question:What causes 1756-A4K module overheating during operation?
answer:Ensure proper ventilation and verify ambient temperature stays within 0-60°C per specifications.
question:Why does 1756-A4K show intermittent power failures?
answer:Check input voltage stability (120-240V AC) and inspect wiring for loose connections or damage.
question:How to resolve 1756-A4K module not communicating with ControlLogix chassis?
answer:Verify backplane connector seating and replace if damaged. Confirm firmware compatibility.
question:What triggers 1756-A4K's fault LED illumination?
answer:Diagnose using status LEDs: Red indicates power fault, check load current against 4A max rating.
question:Why does 1756-A4K fail to power connected I/O modules?
answer:Calculate total chassis power draw. Ensure A4K's 20A total capacity isn't exceeded per slot limits.