8920-PS-DC Intrinsically Safe (IS) DC Power Supply Module
The 8920‑PS‑DC is an intrinsically safe (IS) DC power supply module originally designed by MTL (now part of Emerson/GE) for the PAC8000 SafetyNet I/O system. It delivers regulated, isolated 24 VDC power to SafetyNet controllers and intrinsically safe I/O modules, supporting up to 8 I/O modules and 5 A current capacity. Built for hazardous areas, it complies with SIL 2, ATEX, and IECEx standards, ensuring safe, reliable power in explosive environments.
Applications
- PAC8000 SafetyNet Powering: Supplies 24 VDC to SafetyNet controllers and IS I/O modules in hazardous zones.
- Intrinsically Safe Field Devices: Powers transmitters, sensors, and actuators in ATEX/IECEx‑classified areas.
- Redundant Control Systems: Supports load sharing for 1:1 redundant operation to eliminate single points of failure.
- Hazardous Area I/O Networks: Provides isolated, safe power for 8‑module I/O racks in oil, gas, and chemical plants.
- Safety‑Critical Loops: Used in SIL‑rated safety systems (e.g., emergency shutdown, fire & gas).
Operating Environment
| Parameter | Specification |
|---|---|
| Operating Temperature | ‑20°C to +60°C |
| Storage Temperature | ‑40°C to +85°C |
| Relative Humidity | 5%–95% RH (non‑condensing) |
| Protection Rating | IP30 (cabinet/DIN rail mounting) |
| Isolation Voltage | 1500 V AC (input‑output isolation) |
| Vibration Resistance | 1 g (10–150 Hz) |
| Certifications | ATEX, IECEx, UL, CE, RoHS, SIL 2 |
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 8920‑PS‑DC |
| Manufacturer | MTL (Emerson/GE) |
| Type | Intrinsically Safe DC Power Supply |
| Compatible System | PAC8000 SafetyNet I/O |
| Input Voltage | 100–240 V AC, 50/60 Hz |
| Output Voltage | 24 V DC (regulated) |
| Output Current | 5 A max |
| Power Rating | 120 W |
| Efficiency | ≥ 90% (full load) |
| Protection | Over‑voltage, over‑current, short‑circuit, over‑temperature |
| Dimensions (W×H×D) | 130 mm × 254 mm × 64 mm |
| Weight | 3.2 kg |
| Mounting | DIN rail (T/G profile) or panel |
| Lifecycle Status | Active |
Target Industries
- Oil & Gas: Offshore platforms, refineries, pipelines (hazardous area I/O power).
- Chemical & Petrochemical: Explosive atmosphere process control, reactor safety systems.
- Pharmaceuticals: Hazardous solvent zones, sterile process safety loops.
- Power Generation: Thermal plants, combined‑cycle facilities (SIL‑rated safety systems).
- Water & Wastewater: Biogas plants, chemical dosing safety controls.
Similar Series Products
- 8910‑PS‑DC – 24 VDC power supply for PAC8000 non‑IS I/O racks (3.75 A, IP20).
- 8920‑PS‑DC‑02 – Compact 24 VDC IS power supply for smaller SafetyNet systems (2.5 A).
- 8503‑PS‑24 – 24 VDC general‑purpose power supply for 8000 series I/O (non‑hazardous areas)
There are no reviews yet.