Allen-Bradley 1746-A2 SLC 500 2-Slot Modular Expansion Chassis

Allen-Bradley 1746-A2 SLC 500 Modular Expansion Chassis

Availability: 7 left in stock

DescriptionThe Allen-Bradley 1746-A2 is a 2-slot modular chassis designed for the SLC 500 control system. As the most compact chassis...

SKU: 1746-A2

Manufacturer: Allen-Bradley
Product No.: 1746-A2
Product Type: PLC Expansion Chassis
Product Origin: USA
Payment:T/T, Western Union
Weight: 340g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Allen-Bradley 1746-A2 is a 2-slot modular chassis designed for the SLC 500 control system. As the most compact chassis in the SLC 500 product line, it is primarily used as an expansion rack for adding I/O points to an existing system or as a remote I/O station when utilized with an appropriate adapter module. Despite its small form factor, the 1746-A2 provides the necessary backplane communication and power distribution required for standard 1746 I/O modules.

Features

Compact 2-slot design for space-constrained industrial environments.
Supports one processor or I/O adapter in Slot 0 and one additional I/O module.
Compatible with standard SLC 500 backplane communication protocols.
Supports system expansion by interconnecting up to three chassis total using standard chassis interconnect cables.
Robust backplane power distribution for reliable module operation.

Applications

The 1746-A2 is ideal for small-scale automation tasks, remote I/O drops, or as a secondary expansion rack in larger SLC 500 control architectures. It is commonly deployed in manufacturing, material handling, and process control systems where modularity and footprint efficiency are required.

Technical Specifications

Brand	Allen-Bradley
Product Line	SLC 500
Slot Capacity	2 Slots
Max Backplane Current (5.1V DC)	10 Amps
Max Backplane Current (24V DC)	2.88 Amps
Mounting Type	Panel Mount
Operating Temperature	0 to 60 degC (32 to 140 degF)
Storage Temperature	-40 to 85 degC (-40 to 185 degF)
Humidity	5 to 95% (Non-condensing)

Installation Guidelines

Ensure the chassis is mounted on a flat, vibration-resistant surface using the provided mounting holes.
Maintain adequate clearance around the chassis to allow for proper airflow and heat dissipation.
Always power down the system before installing or removing modules from the chassis to prevent electrical damage.
Ensure all modules are fully seated and the retaining screws are tightened to secure the connection to the backplane.
When using multiple chassis, ensure interconnect cables are properly routed and shielded from high-EMI sources.
Follow standard ESD precautions when handling the chassis and modules to prevent damage to sensitive electronic components.

FAQ

Can the 1746-A2 be used as a standalone processor rack?

Yes, the 1746-A2 can house an SLC 500 processor in Slot 0, allowing it to function as a small, standalone controller rack.

How many chassis can be connected together?

You can connect up to three chassis in a single local system using the appropriate chassis interconnect cables.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.