Product Details
Product Overview
The Allen-Bradley 1746-A7 is a 7-slot modular chassis from the SLC 500 series, designed to house and interconnect processors, power supplies, and I/O modules in industrial automation systems. With support for up to seven modules, this chassis ensures reliable backplane communication and clean power distribution across all installed components. It can be expanded through interconnection cables to support larger configurations, offering flexibility for scalable control system designs. Constructed for panel mounting, the 1746-A7 provides dependable performance in both new and retrofit applications.
Technical Specifications
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Manufacturer: Rockwell Automation
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Brand: Allen-Bradley
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Model Number: 1746-A7
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Series: SLC 500
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Product Type: Modular I/O Chassis
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Slots: 7 slots for modular components
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Expansion Capacity: Up to 21 total modules using interconnection cables (1746-C7, 1746-C9)
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Dimensions (W x H x D): 28.2 × 17.1 × 14.5 cm (11.1 × 6.7 × 5.7 in)
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Approximate Weight: 1.1 kg (2.4 lb)
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Mounting Type: Panel mount with 4 tabs
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Backplane Current:
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5.1 VDC @ 10 A
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24 VDC @ 2.88 A
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Thermal Dissipation: 2.5 BTU/hour at 28.8 VDC
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Operating Temperature: 0°C to +60°C (32°F to 140°F)
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Storage Temperature: -40°C to +85°C (-40°F to 185°F)
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Relative Humidity: 5%–95% (non-condensing)
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Chassis Material: Aluminum with integrated grounding
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Condition: New & Original in factory packaging
Application Scenarios
The Allen-Bradley 1746-A7 chassis is widely used in:
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Distributed and modular control systems using the SLC 500 platform
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Factory automation, packaging lines, and process monitoring systems
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Equipment requiring mid-sized modular expansion capability
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System retrofits where space and scalability are critical
FAQ
Q: What types of modules can be installed in the 1746-A7 chassis?
A: It supports all standard SLC 500 I/O, communication, processor, and specialty modules.
Q: Can this chassis be expanded to accommodate additional modules?
A: Yes, up to three chassis (21 total modules) can be interconnected using 1746-C7 or 1746-C9 cables.
Q: Which power supplies are compatible with this model?
A: Compatible with Allen-Bradley 1746-P1, 1746-P2, and 1746-P4 power supplies.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.
Site Acceptance Testing (SAT) for PLC Control Systems: An Engineering Execution Guide
The Site Acceptance Test (SAT) represents the definitive handover stage in industrial automation projects. While the Factory Acceptance Test confirms cabinet hardware assembly off-site, the SAT validates real-world performance under live site conditions. Consequently, a structured execution strategy prevents equipment damage and guarantees seamless integration into plant operations.