Description
- Product Model: 8920‑PS‑DC‑02
- Brand: GE (PAC8000 Series)
- Warranty: One Year
- Input Voltage: 18‑36 VDC nominal 24 VDC system input
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: ‑40 °C to +85 °C
- Response Time: <10 ms fault detection for over‑voltage / over‑current events
- Protection Class: IP20 (DIN‑rail / carrier‑mount cabinet‑internal power supply)
- Accuracy Class: N/A (system power supply unit)
- Output Frequency: N/A (regulated DC backplane output)
- Rated Current Range: Max 5 A backplane output for PAC8000 I/O carrier; max 120 W power capacity
- Communication Interface: PAC8000 internal carrier backplane, front‑panel status LED indicators
- Supported Protocols: PAC8000 proprietary backplane power‑management signalling
- Overload Capacity: Electronic over‑current, over‑voltage, short‑circuit and reverse‑input‑polarity protection; supports parallel load‑sharing for redundant configurations
- Dimensions: 225 mm × 175 mm × 85 mm
Product Overview
The GE 8920‑PS‑DC‑02 is a rack‑mount DC power supply module for the GE PAC8000 modular I/O system, widely deployed for general‑purpose and hazardous‑area process control applications. It converts 24 VDC field‑side input into tightly‑regulated multi‑rail DC power for PAC8000 I/O modules, BIM bus interface modules and field terminals on the carrier base. It supports parallel load‑sharing to achieve true power redundancy, and provides LED local status indication for power‑ok, overload and fault conditions. It addresses common plant‑site pain points including insufficient power budget for dense PAC8000 I/O racks, single‑point power‑failure risks, and lack of on‑board fault visibility. DCS system engineers, instrument technicians and process‑plant integrators benefit from this hardware; redundant parallel capability enhances system availability for critical control loops, drop‑in carrier‑mount form‑factor simplifies spare‑part replacement, and comprehensive built‑in protection safeguards downstream I/O hardware from transient electrical damage.
Application Scenarios
- Petrochemical Hazardous‑Zone I/O Station Power Supply: Installed on PAC8000 carrier bases inside safe‑area control cabinets. Supplies stable DC power to intrinsically‑safe I/O modules for pressure, flow and valve‑control loops in classified explosive plant zones. Redundant parallel configuration mitigates single‑source power‑failure risk for ESD‑related I/O racks.
- Chemical Plant Large‑Scale DCS I/O Cabinets: Powers densely‑populated PAC8000 I/O racks with mixed analog input, analog output and discrete I/O modules. Load‑sharing function distributes total rack power demand across multiple supply units to avoid over‑loading a single module.
- Legacy PAC8000 System Retrofit & Spare Replacement: Direct drop‑in spare for existing PAC8000 installations. Carrier‑mount mechanical keying prevents wrong‑module insertion; module swap can be completed without modifying field wiring or I/O carrier hardware.
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