ABB HIEE305120R0002 UNS0868A-P V2 – Redundant Power Supply Module | AC800M DCS Platform
Engineering Background
The HIEE305120R0002 (catalog alias UNS0868A-P, hardware revision V2) is a dedicated DC power supply module engineered for ABB’s AC800M Modular Controller family — the backbone of process automation in oil & gas, pulp & paper, power generation, and chemical industries worldwide. Designed to operate inside the S800 I/O and AC800M controller cabinets, it converts plant-level AC/DC supply into the regulated low-voltage rails required by CPU, communication, and I/O modules.
Product Positioning
As a direct ABB OEM replacement unit, the HIEE305120R0002 V2 is the preferred sourcing choice for maintenance engineers who need a drop-in spare without re-engineering the power rail. Konmask.com stocks verified units with full traceability, making it the fastest path from purchase order to panel installation.
Complete Technical Specifications
- Part Number: HIEE305120R0002
- Catalog / Order Code: UNS0868A-P
- Hardware Revision: V2
- Manufacturer: ABB Ltd. (Switzerland)
- Product Family: AC800M / S800 I/O System
- Module Type: Power Supply Module (PSM)
- Input Voltage: 24 V DC (nominal plant supply)
- Output Voltage Rails: Regulated internal bus voltages for AC800M backplane
- Redundancy Support: Yes – supports 1+1 redundant PSM configuration
- Mounting: DIN-rail / AC800M controller rack
- Cooling: Convection (fanless)
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: −40 °C to +70 °C
- Relative Humidity: 5 % to 95 % (non-condensing)
- Protection Class: IP20
- Weight: 720 g (approx.)
- Compliance: CE, UL, IEC 61131-2
- HS Code: 8537.10
Proven Application Environments
- Oil & Gas – upstream wellhead control, downstream refinery DCS cabinets
- Power Generation – turbine governor and boiler management systems
- Pulp & Paper – continuous digester and recovery boiler automation
- Chemical & Petrochemical – reactor control and safety instrumented systems (SIS)
- Water & Wastewater – SCADA-integrated pump station controllers
- Marine & Offshore – platform control rooms requiring redundant power architecture
Engineering Advantages
- True Hot-Swap Redundancy: Swap a failed PSM without powering down the controller rack, eliminating unplanned process shutdowns.
- Regulated Output Stability: Tight voltage regulation protects sensitive CPU and communication modules from transient damage.
- Fanless Convection Design: No moving parts means zero fan-failure risk and reduced preventive maintenance intervals.
- OEM Form Factor: Identical mechanical and electrical footprint to the original factory unit — no wiring or bracket modifications required.
- Wide Ambient Range: Rated to +55 °C continuous operation, suitable for non-air-conditioned field cabinets in tropical climates.
System Architecture & Signal Flow
Within the AC800M rack, the HIEE305120R0002 V2 sits in the dedicated PSM slot and receives 24 V DC from the plant UPS or battery-backed distribution panel. It conditions and distributes regulated power across the backplane bus to the PM8xx processor module, CI8xx communication interfaces, and connected S800 I/O clusters. In a redundant configuration, two PSMs share the load; upon failure of one, the surviving unit assumes full load within milliseconds — transparent to the running control application.
Sourcing & Quality Verification
- Origin: Genuine ABB manufactured unit; sourced through authorized industrial channels
- Inspection: Each unit undergoes visual inspection, label verification (part number, revision, serial range), and functional power-on test before dispatch
- Packaging: Anti-static bag + foam-lined carton; humidity indicator card included
- Warranty: 12-month Konmask operational warranty against manufacturing defects
- Traceability: Serial number and batch records available on request for regulated industries
Procurement Process
- Submit your RFQ via support@konmask.com or WhatsApp +0086 19859288691
- Receive proforma invoice with lead time and shipping options within 24 hours
- Confirm payment (T/T, PayPal, or platform escrow)
- Unit ships with tracking; typical transit 3–7 business days (DHL/FedEx express available)
- Post-delivery technical support included at no charge
Technical FAQ
Q: Is HIEE305120R0002 compatible with AC800M PM861 and PM864 processors?
A: Yes. The UNS0868A-P PSM is designed for the full AC800M controller family including PM851, PM856, PM860, PM861, PM864, and PM866 variants.
Q: Can I run a single PSM without redundancy?
A: Yes. A single HIEE305120R0002 V2 can power the rack in simplex mode. Redundancy requires a second PSM in the adjacent slot.
Q: What is the difference between V1 and V2 hardware revision?
A: V2 incorporates improved inrush current limiting and enhanced EMC filtering. It is backward-compatible and directly replaces V1 units.
Q: Do you provide a test report or certificate of conformance?
A: Yes. A functional test report and CoC can be provided upon request for quality-critical procurement.
Q: What is the lead time if not in stock?
A: Konmask maintains buffer stock for high-demand ABB modules. If your specific revision is not immediately available, typical sourcing lead time is 5–10 business days.
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Contact: support@konmask.com | +0086 19859288691
