Product Core Brief

• Model:
• Brand: GE Fanuc / Emerson Automation
• Series: Series 90-30 PLC
• Core Function: High capacity DC input power supply module for Series 90-30 main rack. Converts 24VDC nominal field input to regulated backplane 5VDC logic power plus two separate 24VDC auxiliary outputs for field loads. Installed in the leftmost dedicated power slot of Series90-30 backplanes.
• Product Type: Single-width Series90-30 Main Rack Power Supply Module
• Key Specs: Nominal 24VDC wide DC input | Total combined 30W maximum output capacity | 5VDC backplane power + Non-isolated Relay 24VDC + Isolated 24VDC | -D = PCB hardware revision suffix Note: Discontinued legacy power supply; new original stock limited, surplus & refurbished widely available. Mechanically and electrically interchangeable with base IC693PWR331. Does NOT support hot swap. Cannot be installed into IC694 or IC695 RX3i backplanes. Higher 5V power capacity compared to standard IC693PWR321 power supply.

 

Key Technical Specifications

• Input Voltage Range Operating range: 8 ~ 30 VDC Minimum startup voltage: 18 VDC Nominal Input: 24 VDC
• Maximum Input Power: 50 W
• Total Combined Output Power Limit: 30 Watts (all outputs combined)
• Regulated Output Channels
  • 5 VDC Backplane Logic: Max 30 W (up to 6 A)
  • Non-isolated Relay 24 VDC: Max 5 W
  • Isolated 24 VDC Field Supply: Max 20 W
• Output Voltage Range 5 VDC: 5.0 ~ 5.2 VDC (Typical 5.1 VDC) 24 V outputs: 19.2 ~ 28.8 VDC
• Protection Circuits: Overvoltage, overcurrent, short-circuit shutdown protection, internal fuse
• Inrush Current: Peak 4 A, maximum duration 250 ms
• Hold-up Time: Short DC-input optimized design, minimal power ride-through
• Backplane Power Interface: Series90-30 dedicated power slot bus
• Front Panel Indicator: Single PWR OK LED
• Isolation Rating: Input-to-backplane isolation 1500 VAC 1-minute withstand
• Operating Temperature: 0°C ~ +60°C horizontal cabinet mounting Above 50°C, 5V output current requires derating
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Single-width module for IC693 Series90-30 backplane
• Compatible Baseplates: IC693CHS391 (5-slot), IC693CHS392 (10-slot)
• Supported Software: Logicmaster 90, Proficy Machine Edition
• Agency Certifications: UL508, Class I Div.2, CE

 

Product Introduction

is the high-capacity DC-input power supply for Series 90-30 main racks, used for systems with large quantities of I/O modules that demand higher 5V backplane current.

Important Power Supply Family Distinction

1. : High capacity DC-input power supply (24VDC input, up to 30W total output)
2. IC693PWR321: Standard capacity AC-input power supply
3. IC693PWR322: Standard capacity DC-input power supply, lower 5V rating vs PWR331
4. IC694PWR330: Power supply for IC694 serial expansion racks (RX3i migration remote racks) These modules have different backplane interfaces and are not interchangeable.

Three separate output domains offer flexible system design:

• 5VDC feeds all CPU and I/O module backplane logic
• Non-isolated 24V for relay loads
• Isolated 24V for field sensor power to reduce ground loop risks

Revision Note: The -D suffix stands for a specific PCB hardware revision. is fully plug-compatible with standard IC693PWR331; core electrical specifications are identical.

 

QA & Testing SOP (Transparency Building)

1. Incoming Inspection: Verify part marking and -D revision suffix. Inspect backplane gold pins for oxidation/bending; check input terminal block and housing integrity.
2. Live Testing: Mount onto validated IC693CHS backplane. Apply 24VDC nominal input power, test all three output rails under resistive load, monitor voltage regulation, run continuous 24-hour stability test.
3. Electrical Testing: Verify output ripple and load regulation; insulation resistance ≥10MΩ between input power circuit and chassis protective ground.
4. Documentation: Photograph terminal wiring layout before disassembly; document hardware revision.
5. Final QC & Packaging: Place unit inside anti-static shielding. Attach dated QC test tag confirming output voltage stability validation prior to shipment.

 

Installation Pitfalls & Guide

❗ No Hot Swap Support: Power supply module cannot be hot swapped. Full rack power shutdown mandatory before removal. ❗ Strict Baseplate Rule: Only install on IC693CHS391 / CHS392 Series90-30 backplanes. Not compatible with IC694 or IC695 racks. ❗ Dedicated Leftmost Slot Rule: Must occupy the dedicated power slot (leftmost slot of Series90-30 rack). Do not install I/O/CPU modules in the power slot. ❗ Total 30W Combined Power Budget: Sum consumption of all I/O modules; total load cannot exceed combined 30W output rating. ❗ Grounding Design: Isolated 24V and non-isolated relay 24V circuits should not share common field grounds to avoid ground loops. ❗ Temperature Derating: When cabinet temperature exceeds 50°C, reduce total 5V load to prevent over-temperature shutdown. ❗ ESD Risk: Static discharge damages primary switching circuitry leading to intermittent power dropout.

Replacement Guide

1. Pre-install: Lockout-tagout rack DC input power; photograph slot layout and input wiring. Calculate total module power consumption to confirm load fits within power supply rating.
2. Removal: Disconnect DC input wiring, unlatch module and slide straight out without twisting backplane pins.
3. Install: Seat new into original dedicated power slot, replicate DC input wiring connections.
4. Power-on Test: Restore input power; confirm PWR OK LED steady. Verify all Series90-30 CPU and I/O modules are detected normally by programming software.

 

FAQ

Q: Does support hot swapping? A: No. Power supply module cannot be hot swapped. Full rack power shutdown required.

Q: What is the difference between and IC693PWR322? A: Both DC input, but PWR331D provides higher maximum 5V backplane power capacity for heavier I/O loads.

Q: What does the -D suffix mean? A: -D indicates a specific PCB hardware revision. Functionally and electrically identical to base IC693PWR331, mechanically fully interchangeable. Always perform full rack testing after replacement.

Q: Can I use on RX3i main rack IC695CHS007? A: No. Mechanical and bus interface incompatible. It is native Series90-30 power supply.

Q: Can multiple power supplies be fitted on one IC693CHS backplane? A: Only one dedicated power slot (leftmost slot). Single power supply per rack.

Q: Will I need software configuration after power supply replacement? A: No software configuration required for the power supply itself. After replacement, confirm all I/O and CPU scan normally.

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