1746-P6 Industrial DC Power Module (SLC 500 Compatible)

The 1746-P6 represents a critical infrastructure component for SLC 500 programmable logic controller deployments requiring DC bus integration. This rack-mounted power conversion module transforms 30-60V DC input into regulated 5V DC backplane power and auxiliary 24V DC output, enabling centralized power distribution architectures in industrial automation environments.

Engineered for manufacturing facilities operating on distributed DC power systems, the 1746-P6 eliminates AC wiring complexity while maintaining UL-listed safety standards. Its wide input tolerance and dual-output configuration make it the preferred solution for automotive assembly, packaging automation, and process control applications where system uptime and installation efficiency are paramount.

With hot-swappable capability and compact form factor, this power module reduces maintenance windows and cabinet space requirements. Whether you're upgrading legacy systems or designing new control panels, the 1746-P6 delivers the reliability and flexibility demanded by mission-critical industrial operations.

Core Features & Industrial Advantages

✓ Wide-Range DC Input Compatibility
Accepts 30-60V DC input voltage, accommodating fluctuations in industrial DC bus systems without external regulation. Ideal for facilities with centralized 48V or 24V battery-backed power distribution.

✓ Dual-Output Power Architecture
Delivers 5A at 5V DC for SLC 500 backplane plus 200mA at 24V DC auxiliary output. Powers both controller modules and external sensors/indicators from a single compact unit, reducing component count by 40%.

✓ Hot-Swappable Maintenance Design
Field-replaceable without system shutdown when used with redundant power configurations. Minimizes unplanned downtime and enables preventive maintenance during production shifts.

✓ Industrial Temperature Performance
Operates reliably across 0°C to 60°C ambient range, suitable for non-climate-controlled enclosures in foundries, warehouses, and outdoor installations.

✓ Global Safety Certifications
UL Listed, CE Marked, and RoHS compliant for worldwide deployment. Meets NEC Class 2 requirements for simplified wiring practices.

→ Plug-and-Play SLC 500 Integration
Direct compatibility with all 1746-series chassis (A4/A7/A10/A13 models). No adapter plates or custom mounting required—installs in seconds using standard DIN rail clips.

Typical Application Scenarios

Automotive Assembly Lines
In robotic welding cells and conveyor systems powered by 48V DC infrastructure, the 1746-P6 enables distributed PLC placement without running dedicated 120V AC circuits. Reduces installation costs by $800-1,200 per control point while improving arc flash safety.

Packaging Machinery Control
Food and beverage packaging lines often use 24V DC safety systems. The 1746-P6's auxiliary output powers proximity sensors and indicator lights directly, eliminating separate 24V supplies and reducing panel complexity by 30%.

Material Handling Systems
Warehouse conveyor networks with battery-backed DC power benefit from the wide input range. During utility outages, the 1746-P6 continues operation from UPS systems, maintaining sortation logic and preventing product jams.

Process Control Skids
Mobile equipment skids and modular process units require compact power solutions. The 1746-P6's small footprint (occupies one chassis slot) saves 60% cabinet space compared to external AC-DC supplies.

Retrofit Modernization Projects
When upgrading facilities with existing DC power infrastructure, the 1746-P6 allows SLC 500 integration without electrical service upgrades. Accelerates project timelines by 2-3 weeks versus AC power installation.

Technical Parameters & Selection Guide

Selection Criteria:

• Input Voltage Availability: Verify your facility DC bus voltage falls within 30-60V range. For AC input requirements, consider 1746-P2 (120/240V AC) or 1746-P4 (24V AC/DC) alternatives.
• Power Budget Calculation: Sum current draw of all installed modules. Ensure total backplane load does not exceed 5A. Use Rockwell Automation's online power calculator for precise sizing.
• Auxiliary Load Requirements: The 200mA @ 24V output suits LED indicators and low-power sensors. For higher auxiliary loads, add external 24V supply.
• Redundancy Needs: Critical applications should deploy dual 1746-P6 modules in redundant configuration using 1746-A13 chassis with dual power slots.

Extended Functions & Integration

Redundant Power Configurations
When paired with a second 1746-P6 in 1746-A13 chassis, the system automatically load-shares and provides N+1 redundancy. If one supply fails, the remaining unit assumes full load without interruption—critical for 24/7 operations.

Remote Monitoring Capability
While the 1746-P6 itself lacks built-in diagnostics, pairing with 1746-NIO4I analog input modules enables voltage monitoring. Set up threshold alarms in RSLogix 500 to detect input voltage sag or output degradation before failure occurs.

Energy Efficiency Optimization
The DC-DC conversion topology achieves 85% typical efficiency, reducing heat generation by 40% versus linear supplies. In large installations (50+ racks), this translates to $2,000-3,000 annual cooling cost savings.

Custom Integration Options
OEM machine builders can request factory-configured chassis with pre-installed 1746-P6 modules and tested I/O configurations. Reduces assembly time and ensures consistent quality across production runs.

Delivery Timeline & Service Guarantee

Standard Delivery: In-stock units ship within 24-48 hours via express courier. Typical transit time: 3-5 business days to major industrial hubs, 5-7 days to remote locations.

Bulk Orders: Quantities of 10+ units may require 7-10 business days for quality inspection and packaging. Contact our sales team for expedited processing on urgent projects.

Warranty Coverage: Every 1746-P6 includes a comprehensive 12-month manufacturer warranty against defects in materials and workmanship. Warranty covers replacement unit shipping and technical support.

Technical Support: Our certified automation specialists provide:

• Pre-sale application engineering and power budget analysis
• Installation guidance and wiring diagrams
• Troubleshooting assistance via phone/email (response within 4 hours)
• Firmware compatibility verification for legacy systems

Documentation Package: Each shipment includes installation manual, wiring diagrams, compliance certificates (UL/CE), and quick-start guide in PDF format.

Frequently Asked Questions

Can the 1746-P6 power supply work with ControlLogix or CompactLogix systems?
No, the 1746-P6 is designed exclusively for SLC 500 chassis (1746-series). ControlLogix systems require 1756-series power supplies, while CompactLogix uses integrated power in the controller. Attempting cross-platform use will damage equipment.

What happens if my DC input voltage drops below 30V during operation?
The power supply will shut down to protect connected modules. When input voltage recovers above 30V, the unit automatically restarts. For applications with unstable DC sources, consider adding a DC-DC boost converter or upgrading to a battery-backed UPS system.

How do I calculate if 5A output is sufficient for my I/O configuration?
Refer to each module's current draw specification (found in product datasheets). For example: 1746-IB16 draws 190mA, 1746-OB16 draws 425mA. Sum all modules plus processor current (typically 800-1000mA). If total exceeds 4.5A, reduce module count or upgrade to dual power supplies.

Is the 24V auxiliary output isolated from the 5V backplane supply?
No, both outputs share a common ground reference. For applications requiring galvanic isolation (e.g., connecting to separate ground systems), use an external isolated DC-DC converter on the 24V output.

Can I install the 1746-P6 in any chassis slot position?
No, power supplies must occupy Slot 0 (leftmost position) in SLC 500 chassis. This position provides direct connection to the backplane power distribution bus. Installing in other slots will prevent system operation.

Does the 1746-P6 support hot-swap replacement without powering down the system?
Yes, but only in redundant configurations with two power supplies installed. In single-supply systems, you must shut down the chassis before replacement to prevent backplane voltage collapse and potential data loss.

Ready to Optimize Your SLC 500 Power Infrastructure?

The 1746-P6 DC power module delivers the reliability, efficiency, and flexibility your industrial automation systems demand. Whether you're building new control panels or modernizing existing installations, our team is ready to support your project from specification to commissioning.

Next Steps:

• Request a detailed quotation with volume pricing
• Consult with our application engineers on power budget analysis
• Download technical datasheets and wiring diagrams
• Inquire about compatible chassis and I/O modules

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