Product Core Brief

• Model:
• Brand: GE Fanuc / GE
• Series: Series 90-30 PLC
• Core Function: Delivers regulated multi-rail power to Series 90-30 main and expansion backplanes; accepts nominal 24VDC input.
• Product Type: High Capacity DC Input Power Supply Module
• Key Specs: 30W total output | Three independent DC rails | 12–30VDC operating input range Note: Discontinued legacy hardware; factory new stock scarce, surplus and refurbished units widely traded. Install exclusively in the leftmost dedicated power slot of Series 90-30 chassis. Hot swapping is not supported.

Key Technical Specifications

• Nominal Input: 24 VDC
• Operating Input Range: 12–30 VDC; minimum startup voltage 18 VDC
• Total Rated Output Power: 30 W
• Output Rails: +5 VDC (30 W maximum for logic backplane) +24 VDC Relay Power (15 W maximum) Isolated +24 VDC (20 W maximum)
• Isolation Rating: 1500 VAC input-to-backplane isolation, 1-minute withstand
• Protections: Overvoltage, overcurrent, auto-recovering short-circuit shutdown
• Status Indicators: Power OK LED, Fault LED
• Operating Temperature: 0°C to 55°C horizontal cabinet mounting
• Storage Temperature: -40°C to 85°C
• Form Factor: Single-width Series 90-30 slot
• Mounting Rule: Must occupy Slot 0 (far-left position) on all Series 90-30 baseplates
• Supported Racks: IC693CHS391, IC693CHS392, IC693CHS397, IC693CHS398
• Terminal Wire Range: 14 AWG to 22 AWG copper conductors

Product Introduction

This unit supplies stable multi-domain power for Series 90-30 racks powered from 24VDC plant DC systems. It distributes logic power to the backplane and provides separate 24V supplies for relay outputs and field-side discrete input modules.

Flexible power allocation allows the full 30W capacity to be allocated to the +5VDC rail for racks with high CPU and I/O density, making it suitable for larger machine control and process retrofit applications.

QA & Testing SOP (Transparency Building)

1. Incoming Inspection: Verify part marking and D revision suffix. Inspect edge connector pins for bending or corrosion; check terminal block housing for cracks.
2. Live Testing: Mount to validated Series 90-30 backplane, apply 24VDC nominal input. Load all output rails and monitor voltage stability through a continuous 24-hour run cycle.
3. Electrical Testing: Use Fluke 115 to track rail regulation. Insulation resistance testing must exceed 10MΩ between input terminals and chassis protective ground.
4. Documentation Check: Record hardware revision. Photograph input wiring layout before disassembly.
5. Final QC & Packaging: Place unit inside anti-static shielding. Attach dated QC test tag listing steady-state voltage readings prior to shipment.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ No Hot Swap Support: Series 90-30 backplanes lack hot-swap bus logic. Live removal crashes all rack modules and risks permanent backplane trace damage. Full rack power shutdown mandatory. ❗ Slot Placement Mandate: Install only in the far-left dedicated power slot. Insertion into regular I/O slots prevents backplane power distribution and will not operate. ❗ Input Undervoltage Risk: The unit will not start reliably below 18VDC. Long cable runs with voltage drop can trigger intermittent power cycling under peak load. ❗ ESD Dangers: Exposed backplane connector circuits are static-sensitive. Un-grounded handling can create drifting output regulation that appears after commissioning. ❗ Power Budget Miscalculation: Sum total power draw of all installed modules. Overloading the 30W total rating creates voltage sag, random CPU faults and module dropouts.

Replacement Guide:

1. Pre-install: Activate lockout-tagout on rack 24VDC input power; document all input wiring connections.
2. Removal: Disconnect DC input terminals, unlatch module and slide straight out without twisting edge connectors.
3. Install: Seat new unit fully into Slot 0, lock latches, terminate DC input wiring and verify torque on terminal screws.
4. Power-on Test: Restore input power, confirm Power OK LED illuminates; power up CPU and verify all I/O modules are recognized by programming software.

FAQ (Frequently Asked Questions)

Q: Does this unit support hot swapping? A: No. The Series 90-30 backplane architecture does not support live power supply removal. Full rack power shutdown is required for replacement.

Q: What is the difference between IC693PWR331 and ? A: The base catalog number defines core hardware function. The -D suffix denotes a specific printed circuit board revision with updated component screening. Match suffix when performing direct drop-in replacement to avoid minor compatibility edge cases.

Q: Can this power supply be used inside RX3i racks? A: No. Form factor, pinout and signaling are exclusive to Series 90-30 chassis. It cannot operate within PACSystem RX3i hardware.

Q: Can multiple power supplies run in parallel for redundancy? A: Load sharing and redundant parallel operation are not supported. Each rack requires one dedicated power supply. Deploy separate racks for fault-tolerant layouts.

Q: What happens during a short-circuit on any output rail? A: The supply triggers auto-recovering current limiting. Persistent faults will assert the Fault LED and halt output regulation until power is cycled.

Q: Can I use this unit on Series 90-30 remote expansion racks? A: Yes, it is compatible for expansion baseplates, provided the rack is configured to accept a DC input power supply. Confirm rack power budget before loading I/O modules.

Q: Will a replacement unit work without configuration changes? A: No software configuration is required for power supplies. After installation, verify all rail voltages and monitor for intermittent fault codes caused by overloaded backplane loads.