3. Product Specification Manual

3.1 Basic Parameters

• Part Number: P0916AM

• Product Type: Auto-switch Dual AC Voltage Input Rack Redundant Power Supply Unit

• Manufacturer: Foxboro (AVEVA / Schneider Electric)

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

• Core Function: Auto 110V/220V AC identification conversion, stabilized 24VDC rack power supply, dual hot standby redundant backup for global multi-grid industrial sites

• AC Input Auto-Switch Range:

  Low voltage gear: 100–130V AC (50/60Hz)

  High voltage gear: 200–260V AC (50/60Hz)

• Rated Regulated DC Output: 24VDC

• Max Output Power: 320W

• Protection Class: IP20

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

• Net Weight: 0.56kg

• 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 FBM analog/digital I/O modules, P0915DX/P0915FB/P0915FC wiring terminal bases

3.2 Electrical Performance

• Output Voltage Regulation Precision: ±0.4% stability under full load fluctuation

• Output Ripple & Noise: ≤110mV peak-to-peak

• Voltage Identification Feature: Automatic gear switching within 100ms after power-on, no manual wiring adjustment

• 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 LC EMI filter to suppress grid 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 AC input power

• On-board Real-time Self-Diagnosis: Detect AC input loss, abnormal input voltage, DC 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 abnormal voltage lockout protection: Automatically stop output when AC voltage exceeds 100–130V / 200–260V 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 AC input polarity protection to avoid module burnout from reversed field power wiring

6. Input transient surge absorption circuit to resist lightning and instantaneous grid voltage spikes

3.6 Step-by-Step Installation Instructions

1. Vertically insert P0916AM auto-switch power module into dedicated power slot of P0914 series rack backplane inside a standard 19-inch control cabinet;

2. Connect AC mains cable to the rear input terminal block, fasten terminals tightly to prevent loose contact;

3. For redundant power architecture: Install two P0916AM 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 AC mains power, the module automatically identifies grid voltage and switches corresponding working gear, observe front LED: steady green light means stable 24VDC power supply for the entire rack;

6. Maintenance operation: Hot-swap faulty P0916AM directly without cutting off cabinet AC power; standby unit continuously supplies power to avoid DCS system interruption.

4. Application Fields

1. International petrochemical, oil refining and natural gas overseas branch plants with different national grid standards

2. Cross-border fine chemical, pharmaceutical production bases exported to North America, Europe and Southeast Asia

3. Overseas thermal power, hydropower and new energy photovoltaic centralized power stations

4. Transnational steel, non-ferrous metal metallurgy heavy industrial parks with inconsistent grid voltage

5. Export cement, mining and mineral processing group factories for global market delivery

6. International pulp, papermaking and food manufacturing overseas industrial parks

7. Cross-border long-distance pipeline unattended monitoring stations and overseas municipal sewage treatment projects

8. Global industrial park centralized heating, distributed HVAC and heat exchange automatic control systems

Information Verification Note

• Confirmed fixed facts: P0916AM is auto-switch dual AC voltage (100–130V / 200–260V) power supply for I/A Series DCS, 320W 24VDC output, fanless passive cooling, hot swappable, dual redundant parallel load sharing, fully compatible with all P0914 series hardware, ISA G3 dust resistant; core advantage of automatic voltage identification different from fixed-range AC models P0916AA/AC/AE/AL.

• 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.