PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-A4 is a four-slot modular rack chassis for SLC 500 systems. It provides mechanical mounting and electrical backplane connections for SLC 500 processors and I/O modules. The unit functions as an I/O housing within industrial automation architectures.
This chassis operates on a 1746 backplane delivering 5.1 V DC and 24 V DC power. Multi-chassis expansion allows users to link up to three total chassis using interconnect chassis cables. Panel mounting provides physical installation and panel grounding ensures safe electrical operation.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| UPC | 662468415354 |
|---|
| Weight | 2.38 lbs (1.08 kg) |
|---|
| Chassis Type | Modular rack |
|---|
| Mounting Method | Panel mounted |
|---|
| Slot Count | 4 slots |
|---|
| Interconnect Support | Chassis cables |
|---|
| System Role | I/O housing |
|---|
| Grounding Method | Panel ground |
|---|
| Typical Applications | SLC 500 systems |
|---|
| Expansion Capability | Multi-chassis |
|---|
| Backplane Voltage | 5.1 V DC/24 V DC |
|---|
| Backplane Type | 1746 backplane |
|---|
| Max Chassis Linked | 3 total |
|---|
TECHNICAL INFORMATION
Features
- Accommodates up to four modular SLC 500 hardware modules.
- Supplies 5.1 V DC and 24 V DC backplane power distribution.
- Supports interconnection of up to three total chassis via cables.
- Designed for secure panel mounting with integrated panel grounding.
TECHNICAL INFORMATION
Applications
- SLC 500 programmable logic controller hardware assemblies.
- Distributed and local industrial automation I/O housing.
- Multi-chassis control configurations requiring up to three linked racks.
TECHNICAL INFORMATION
Connections / Interfaces
- Four backplane slots accept compatible 1746 modules.
- Interconnect cable ports allow connection to additional chassis.
TECHNICAL INFORMATION
Installation Guidelines
- Fasten the chassis securely to a flat panel enclosure surface.
- Establish a solid panel ground connection to ensure proper electrical grounding.
- Connect expansion chassis cables when linking multiple chassis together.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1746 series SLC 500 modules and processors.
- Links with up to two additional 1746 chassis using compatible chassis cables.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1746 series SLC 500 modules and processors. Links with up to two additional 1746 chassis using compatible chassis cables.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
How many module slots are provided by the 1746-A4 chassis?
The Allen-Bradley 1746-A4 chassis provides four modular slots for SLC 500 hardware.
Can the 1746-A4 chassis be expanded across multiple racks?
Yes, you can interconnect up to three total chassis using compatible chassis cables.
What backplane voltages does the 1746-A4 support?
The 1746 backplane supplies 5.1 V DC and 24 V DC to installed modules.
How is the 1746-A4 chassis mounted in an enclosure?
The chassis uses panel mounting and requires a dedicated panel ground connection.
