Description
FISHER-ROSEMOUNT SYSTEMS, INC.
12P0677X042
DELTAV SYSTEM POWER SUPPLY (AC/DC)
REV: L
INPUT POWER RATING: 120VAC, 0.34A / 230VAC, 0.17A
OUTPUT POWER RATING: 12 VDC, 2.1A
OUTPUT POWER RATING: 5 VDC, 2.0A
OUTPUT POWER RATING: 3.3 VDC, 0.5A
NOTE: COMBINED OUTPUT POWER OF 5VDC AND 3.3VDC: 10 WATTS MAX.
NOTE: COMBINED OUTPUT POWER OF ALL OUTPUTS: 25 WATTS MAX.
AMBIENT TEMPERATURE: 60°C MAX.
ALARM RELAY CONTACT RATING: 30VDC, 2A OR 250VAC, 2A
PF18797
JOB: 2064250017
KJ1501X1-BA2
The Fisher-Rosemount DeltaV System Power Supply (part number 12P0677X042, Rev L) is a multi-output AC/DC power conversion unit designed to provide stable, regulated DC power to the DeltaV distributed control system. Accepting both 120VAC and 230VAC input, it delivers three regulated DC output rails — 12V, 5V and 3.3V — to sustain controller, I/O module and communication card operation within the DeltaV architecture. As a core component within the Marine Control System category, reliable power supply integrity is essential to maintaining continuous process control, alarm management and safety system availability onboard vessels where DeltaV platforms are deployed.
Key Features
✓ Dual-voltage AC input (120VAC / 230VAC) with regulated multi-rail DC output: 12VDC at 2.1A, 5VDC at 2.0A and 3.3VDC at 0.5A, with a maximum combined output of 25 watts across all rails.
✓ Integrated alarm relay with contact rating of 30VDC / 2A or 250VAC / 2A, enabling supervisory monitoring and fault signalling within the control system architecture.
✓ Rated for operation up to 60°C ambient temperature, making it suitable for installation in marine control cabinet environments subject to elevated thermal conditions.
✓ Designed for compatibility within the Fisher-Rosemount DeltaV distributed control system platform — subject to confirmation against specific system version, controller hardware and I/O configuration.
✓ Replacement or spare power supply for DeltaV control nodes; installation context, mounting arrangement and system integration requirements should be confirmed against original panel documentation and drawings.
Marine Applications
✓ Distributed control system (DCS) power infrastructure aboard vessels where Fisher-Rosemount DeltaV platforms govern process automation and alarm management.
✓ Cargo management and loading control systems on tankers and bulk carriers relying on DeltaV-based control architectures for operational safety.
✓ Engine room automation and machinery monitoring systems where stable multi-rail DC power is required to sustain controller and I/O module uptime.
✓ Offshore production platforms and FPSOs utilising DeltaV systems for process control, with power supply reliability directly affecting production continuity.
✓ Vessel automation retrofit and upgrade projects where legacy or failed DeltaV power supply units require like-for-like replacement to restore system functionality.
Why Marine Engineers Choose
The Fisher-Rosemount DeltaV power supply unit is valued for its multi-output capability, dual-voltage AC input flexibility and integrated alarm relay — features that simplify panel integration and support fault detection within demanding marine automation environments where control system uptime is operationally critical.
Ideal For
Tankers, bulk carriers, offshore platforms, FPSOs, LNG vessels, and any commercial or industrial marine vessel operating Fisher-Rosemount DeltaV distributed control systems requiring power supply replacement or standby spare support.
Technical Support & Compliance
Remote troubleshooting guidance, onboard commissioning support, bench testing, system integration assistance and retrofit consultation are available subject to confirmation of application details. To confirm compatibility and suitability for your installation, buyers are advised to share nameplate photographs, the full part number and revision level, system model and software version, I/O configuration details, relevant panel drawings or wiring diagrams, and vessel name or IMO number where applicable. All compatibility assessments are subject to confirmation based on documentation provided.
