GE Fanuc IC693PWR331D – 24/48/125 VDC Power Supply for Series 90-30 PLC Racks

The IC693PWR331D is a DC-input power supply designed for Series 90-30 baseplates. From my experience, it’s the go-to option when a plant runs on a DC bus (24 VDC, 48 VDC, or 125 VDC) and you need stable backplane power without reworking the rack. It feeds regulated power to the PLC backplane and provides an auxiliary 24 VDC feed for I/O/relays—simple, reliable, and typically drop-in with existing 90-30 hardware.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery time: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• Wide DC input range (24/48/125 VDC): Suits facilities with DC buses or battery-backed systems; reduces need for external converters.
• Backplane + auxiliary outputs: Regulated +5 VDC for CPU and I/O modules, plus a 24 VDC auxiliary rail for relays and field circuits.
• 30 W class capacity: Adequate for a typical 90-30 rack with standard I/O; ideal for compact control panels.
• Status indication: Front “P/S OK” LED helps maintenance teams check power health at a glance.
• Series 90-30 form factor: Installs in the power-supply bay of GE 90-30 baseplates; no layout changes in most cases.
• Protection built-in: Overcurrent and overvoltage protections are typically present, helping safeguard the rack.

Technical Specifications

Brand / Model	GE Fanuc IC693PWR331D (Series 90-30)
HS Code	8504.40 (Static converters / Power supplies)
Input Power	Nominal 24/48/125 VDC (DC-input wide range)
Power Rating	30 W class (sized for typical 90-30 racks)
Outputs	+5 VDC backplane supply; +24 VDC auxiliary (for I/O/relays)
Operating Temperature	0 to 60 °C (typical for 90-30 hardware)
Communication Interfaces	None (power supply module); front “P/S OK” LED
Installation Method	Mounts in the left power-supply bay of Series 90-30 baseplates; DC input via front terminals; standard panel cabinet installation with the baseplate
Dimensions & Weight	Standard 90-30 PSU module form factor; weight typically around 0.5 kg

Application Fields

This unit fits best where DC power is already available or preferred. You might notice it shows up in:

• Water and wastewater plants using 24 VDC panels and battery backup
• Power generation auxiliaries with 125 VDC station batteries
• Manufacturing/packaging lines that standardize on 24/48 VDC for safety and serviceability
• Mobile and marine equipment control cabinets where DC is the primary bus

A maintenance lead told us, “Swapping a failed 90-30 DC supply with IC693PWR331D took under 15 minutes—no wiring changes and the rack came back clean on the first start.”

Advantages & Value

• Reliability: Field-proven in 90-30 installations; stable backplane voltage helps reduce nuisance trips.
• Compatibility: Designed for GE Series 90-30 baseplates—typically no re-engineering required.
• Cost control: Replace the PSU without touching the CPU or I/O, which lowers downtime and spares spend.
• Supportability: Clear status indication and straightforward wiring make troubleshooting faster for technicians.

Installation & Maintenance

• Cabinet & environment: Install in a clean, dry enclosure with adequate ventilation. Keep ambient within 0–60 °C; avoid direct heat sources.
• Wiring tips: Use appropriately rated DC wiring and a dedicated upstream fuse/breaker. Verify polarity and tighten terminal screws to the recommended torque.
• Grounding: Bond the baseplate and panel ground to minimize electrical noise and improve EMC performance.
• Commissioning: Before applying power, check the rack load against the PSU capacity. After power-up, confirm backplane +5 V is within tolerance.
• Routine care: No calibration is required. Periodically clean dust from vents, re-check terminal tightness, and inspect the “P/S OK” LED during walkdowns.

Quality & Certifications

• Typically CE marked and UL recognized for industrial control equipment
• RoHS status can vary by revision; the D revision commonly aligns with late 90-30 compliance practices
• Manufactured under ISO 9001 quality systems (manufacturer level)
• Warranty: 365 days (our supply policy)

Related & Supporting Components

For planning spares or new builds, this supply pairs with standard 90-30 baseplates and modules, for example:

• Baseplates: IC693CHS391 (5-slot), IC693CHS392 (9-slot)
• Typical CPUs: IC693CPU363, IC693CPU372 (as examples)
• Common I/O: IC693MDL740 (24 VDC output), IC693MDL340 (120 VAC input), and similar Series 90-30 modules

One thing I appreciate is how the IC693PWR331D makes DC-powered panels straightforward—no external conversion, fewer points of failure, and a familiar 90-30 fit that maintenance teams already know well.