3. Product Specification Manual

3.1 Basic Parameters

• Part Number: P0916AJ

• Product Type: 48V Input DC-DC Rack Redundant Power Supply Unit

• Manufacturer: Foxboro (AVEVA / Schneider Electric)

• Applicable System: I/A Series DCS Distributed Control System

• Core Function: 40–60VDC wide DC-DC conversion, stabilized 24VDC rack power supply, dual hot standby redundant backup for 48V DC powered control cabinets

• DC Input Range: 40VDC ~ 60VDC standard 48V industrial DC bus

• Rated Regulated Output: 24VDC DC

• Max Output Power: 220W

• Protection Class: IP20

• Housing Material: Die-cast aluminum alloy integrated heat sink

• Net Weight: 0.46kg

• Installation Mode: Vertical slot mounting inside standard 19-inch industrial control cabinet

• Compatible Hardware: All P0914 series backplanes, P0914WP main controllers, P0914YM / P0914YZ FCM communication modules, full series FBM analog/digital I/O modules, P0915DX / P0915FB / P0915FC wiring terminal bases

3.2 Electrical Performance

• Output Voltage Regulation Precision: ±0.5% voltage stability under full load fluctuation

• Output Ripple & Noise: ≤140mV peak-to-peak

• Redundancy Working Mode: Dual-module parallel hot standby with automatic balanced current sharing

• Fault Switch Characteristic: Instant non-interrupt transfer without output voltage sag during single module breakdown

• Input Filter Design: Multi-level differential LC filter to suppress DC bus spike and electromagnetic interference

• Cooling Method: Fanless natural passive convection heat dissipation, long-term maintenance-free operation

3.3 Maintenance & Diagnostic Functions

• Hot Swap Support: Online plug-and-play replacement without disconnecting cabinet 48V DC input power

• On-board Real-time Self-Diagnosis: Detect DC input loss, input undervoltage/overvoltage, output overload, short-circuit, internal over-temperature and hardware damage

• LED Status Definition: Steady green = normal stable output; flashing red = power system fault alarm

• Redundancy Configuration: Direct parallel installation without additional configuration software

• Load Adaptability: Stable drive for mixed loads of communication, temperature, HART and digital switching I/O modules

3.4 Environmental Technical Index

• Operating Temperature Range: 0℃ ~ +60℃

• Storage Temperature Range: -40℃ ~ +85℃

• Relative Humidity: 5% ~ 95% non-condensing

• Dust Resistance Standard: ISA S71.04 Class G3 industrial dust environment compliance

• Vibration Resistance: Pass IEC60068 industrial anti-vibration durability test

• Industrial Certifications: CE, UL global industrial safety certification

3.5 Full Built-in Safety Protection Circuits

1. Input undervoltage/overvoltage lockout protection: Automatically cut off 24V output when 48V DC bus exceeds 40–60V working range to protect downstream DCS hardware

2. Output overvoltage protection: Instant shutdown of 24VDC output upon abnormal high voltage surge

3. Overcurrent & short-circuit self-limiting protection: Fast current limiting shutdown for shorted field signal loops

4. Over-temperature protection: Progressive power derating followed by full shutdown at critical temperature threshold

5. Reverse DC input polarity protection to avoid module burnout from reversed field power wiring

6. Input transient surge absorption circuit to resist DC bus switching voltage spikes and lightning transient pulses

3.6 Step-by-Step Installation Instructions

1. Vertically insert P0916AJ DC power module into dedicated power slot of P0914 series rack backplane inside a standard 19-inch control cabinet;

2. Connect 40–60VDC 48V DC bus cable to the rear input terminal block, strictly distinguish positive and negative polarities and fasten terminals tightly to prevent loose contact;

3. For redundant power architecture: Install two P0916AJ modules in adjacent power slots to realize automatic load-sharing backup;

4. Confirm all controllers, communication cards and FBM I/O modules are fully locked into backplane slots;

5. Switch on field 48V DC input power, observe front LED: steady green light means stable 24VDC power supply for the entire rack;

6. Maintenance operation: Hot-swap faulty P0916AJ directly without cutting off cabinet DC power; standby unit continuously supplies power to avoid DCS system interruption.

4. Application Fields

1. Long-distance crude oil & natural gas pipeline unattended monitoring substations (48V battery backup power)

2. Wind farm, photovoltaic power station remote on-site DCS control cabinets

3. Hydropower station centralized control room 48V DC battery power system

4. Offshore platform auxiliary monitoring secondary control cabinets with 48V DC power supply

5. Telecom industrial station, chemical terminal remote loading & unloading monitoring racks

6. Underground mine auxiliary interlock control cabinets with 48V battery backup

7. Remote municipal water supply pumping stations and rural sewage treatment unattended control cabinets

8. Distributed outdoor industrial park HVAC and heat exchange DC control cabinets

Information Verification Note

• Confirmed fixed facts: P0916AJ is DC-DC power supply for I/A Series DCS, 40–60VDC wide 48V nominal input, 220W 24VDC output, fanless passive cooling, hot swappable, dual redundant parallel load sharing, fully compatible with all P0914 series hardware, ISA G3 dust resistant; distinct from 18–36V input P0916AG and AC input P0916AA/AC/AE series.

• Unverified content: Original factory full electrical test datasheet, customized explosion-proof versions, ultra-low temperature special industrial variants, which require official Foxboro hardware manual for cross-verification.