3. Product Specification Manual

3.1 Basic Parameters

• Part Number: P0916AG

• Product Type: DC-DC Rack Redundant Power Supply Unit

• Manufacturer: Foxboro (AVEVA / Schneider Electric)

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

• Core Function: Wide-range DC-DC conversion, stable 24VDC rack power supply, dual hot standby redundant backup for DC-powered control cabinets

• DC Input Range: 18VDC ~ 36VDC wide field DC bus

• Rated Regulated Output: 24VDC DC

• Max Output Power: 250W

• Protection Class: IP20

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

• Net Weight: 0.48kg

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

• Compatible Hardware: Full P0914 series backplanes, P0914WP controllers, P0914YM/YZ FCM communication modules, all FBM analog/digital I/O modules, P0915DX/FB/FC terminal bases

3.2 Electrical Performance

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

• Output Ripple & Noise: ≤130mV peak-to-peak

• Redundancy Working Mode: Dual-module parallel hot standby with automatic average 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 EMI interference

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

3.3 Maintenance & Diagnostic Functions

• Hot Swap Support: Online plug-and-play replacement without disconnecting cabinet 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 stop output when DC bus exceeds 18–36V range to protect downstream DCS hardware

2. Output overvoltage protection: Instant cut-off of 24VDC output when abnormal high voltage occurs

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

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

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

3.6 Step-by-Step Installation Instructions

1. Vertically insert P0916AG DC power module into dedicated power slot of P0914 series rack backplane in standard 19-inch cabinet;

2. Connect 18–36VDC field DC bus cable to rear input terminal block, strictly distinguish positive and negative poles and fasten terminals tightly;

3. For redundant power architecture: Install two P0916AG 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 DC input power, observe front LED: steady green light means stable 24VDC power supply for the entire rack;

6. Maintenance operation: Hot-swap faulty P0916AG directly without cutting off cabinet DC power; standby unit continuously supplies power to avoid DCS system interruption.

4. Application Fields

1. Offshore oil platforms, remote natural gas compressor stations (24V DC battery bus power supply)

2. New energy wind turbine, photovoltaic power station remote DCS control cabinets

3. Hydropower station on-site local control rooms powered by station DC battery pack

4. Long-distance pipeline unattended monitoring substation control cabinets

5. Mining underground auxiliary monitoring and interlock control racks with DC battery power

6. Remote municipal sewage pump stations and rural water supply unattended control cabinets

7. Transport chemical tank terminals, remote loading station DCS monitoring racks

8. Outdoor industrial park distributed HVAC and heat exchange DC control cabinets

Information Verification Note

• Confirmed fixed facts: P0916AG is DC-DC power supply for I/A Series DCS, 18–36VDC wide DC input, 250W 24VDC output, fanless passive cooling, hot swappable, dual redundant parallel load sharing, fully compatible with all P0914 series hardware, ISA G3 dust resistant; differentiated from 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.