2. Electrical Specification Parameters

2.1 Input Specifications

• AC Input Range: 85VAC～264VAC universal wide-range mains input, 47～63Hz

• Max Input Current: 1.2A @ full load, 110VAC input

• Built-in AC-side EMI filter, lightning surge suppression circuit

2.2 DC Output Ratings (Total Rated Output Power: 42W)

2.3 Protection Functions

1. OVP (Over Voltage Protection): auto latch shutoff when output overvoltage occurs

2. OCP (Over Current Protection): foldback current limiting against overload

3. Short-circuit auto-protection: continuous short won’t damage power unit, auto-recovery after fault removed

4. OTP (Over Temperature Protection): thermal cut-off when internal temp exceeds 85℃

2.4 Environmental Specifications

• Operating Ambient Temp: 0℃ ~ +55℃ (inside sealed control cabinet, natural ventilation)

• Storage Temperature: -40℃ ~ +85℃

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

• Compliance Certifications: UL61010 safety standard, CE EMC industrial directive

2.5 Mechanical Dimension

3. Core Functional Features

1. Dual design: regulated multi-output power supply + VME backplane auxiliary power & signal distribution for WDPF IIU workstation frame.

2. Front panel LED indication: separate LED for main AC input normal, +5V/+12V/-12V output status, overheat/short-circuit fault alert.

3. PCB with three-proof conformal coating (moisture-proof, dust-proof, anti-corrosion), adapting to high-dust & high-humidity industrial cabinet environment.

4. Hot-swap compatible single-slot module: allow individual card replacement without full workstation power cut.

5. Internal optimized high-temperature long-life electrolytic capacitors for long-term continuous 24h full-load operation in power plant DCS system.

4. Version Description of G11 Revision

1. Improved input rectifier circuit to enhance anti-grid voltage fluctuation capacity;

2. Optimized auxiliary VME signal filter circuit to reduce industrial EMI interference-induced abnormal communication;

3. Enhanced thermal layout to lower internal working temperature and extend service life.

5. Typical Application Scope

6. Installation & Maintenance Notes

1. Strict ESD anti-static protection required during plug/unplug operation; cut off rack power before module replacement.

2. After installation and power on, measure all DC output voltage to confirm within rated tolerance before system commissioning.

3. For on-site running equipment, clean front panel ventilation hole and PCB dust every 6 months for good heat dissipation.

4. Spare modules shall be stored in dry ESD-controlled warehouse; quarterly short-time power aging test recommended for long-term stock.