1. Product Overview

Product Name: Power Supply 30–50 V DC in / 5 V DC out
Model: POW‑DD43
Article Number: POW‑DD43
Series: F&eIT Power Supply Series (DC‑DC type)
Manufacturer: CONTEC CO., LTD. (Japan)

The CONTEC POW‑DD43 is a compact, high‑efficiency DC‑DC power supply designed for the F&eIT (Factory & Enterprise IT) distributed monitoring and control network. It converts a 30 to 50 V DC input into a regulated 5 V DC output at up to 3 A. The unit is optimized for powering CONTEC’s DIN‑rail‑mounted microcontrollers, I/O controllers, servers, and device modules used in industrial automation and embedded systems.

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2. Key Features

- Wide DC Input Range: Accepts 30 – 50 V DC, suitable for industrial and field power environments.
- Stable 5 V DC Output: Provides a regulated 5 V DC ± 5 % output with a maximum current of 3 A, ideal for powering multiple F&eIT modules.
- Compact DIN‑rail Form Factor: 25.2 (W) × 64.7 (D) × 94.0 (H) mm housing allows easy integration into control panels.
- High Reliability: Designed for continuous industrial operation with wide temperature and humidity tolerance.
- Noise Immunity: Meets IEC 1000‑4‑4 Level 3 / EN 61000‑4‑4 Level 3 standards for line and signal noise resistance.
- Safety and Grounding: D‑type (former Class 3) grounding ensures stable operation in noisy environments.
- Seamless Integration: Fully compatible with CONTEC’s F&eIT microcontrollers, I/O controllers, servers, and device modules.
- Maintenance‑Free Operation: Fanless, solid‑state design with no moving parts.
- DIN‑rail Mounting Mechanism: Quick installation and removal using a flat‑head screwdriver.
- Lightweight Construction: Approximately 100 g, minimizing load on DIN‑rail assemblies.

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3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Model | POW‑DD43 GY |
| Input Voltage Range | 30 – 50 V DC |
| Output Voltage | 5 V DC ± 5 % |
| Maximum Output Current | 3.0 A |
| Output Power | 15 W (max.) |
| Operating Temperature | 0 – 50 °C |
| Operating Humidity | 10 – 90 % RH (no condensation) |
| Storage Temperature | –10 – 60 °C |
| Cooling Method | Natural air convection (fanless) |
| Dimensions | 25.2 (W) × 64.7 (D) × 94.0 (H) mm (excluding protrusions) |
| Weight | 100 g (main unit only) |
| Mounting | 35 mm DIN rail |
| Ground Type | D type (former Class 3) |
| Noise Resistance | AC line 2 kV / Signal line 1 kV (IEC 1000‑4‑4 Level 3, EN 61000‑4‑4 Level 3) |
| Case Material | Industrial‑grade plastic enclosure |
| Color | Gray (GY) |
| Output Connector | 2‑piece removable terminal block |
| Input Connector | 2‑piece removable terminal block |
| Compliance | CE marking, FCC Class A (industrial use) |

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4. Functionality

The POW‑DD43 functions as a regulated DC‑DC converter supplying 5 V DC power to F&eIT system components. It receives a 30 – 50 V DC input—commonly available in industrial control cabinets or field installations—and delivers a stable 5 V DC output suitable for powering up to 3 A of load.

Typical Use Cases:
- Powering CONTEC F&eIT microcontrollers (CPU‑SBxx series) and I/O controllers (CPU‑CAxx series).
- Supplying power to I/O Assist Servers (SVR‑IOA series), Monitoring & Control Servers (SVR‑MMF series), and Security Servers (SVR‑SEC series).
- Providing regulated 5 V DC to stacked device modules such as digital I/O, analog I/O, counter, relay, serial, and GPIB modules.
- Supporting embedded or distributed automation systems where AC power is unavailable.
- Integration into mobile or remote monitoring units powered by DC bus or battery systems.

Compatibility:
The POW‑DD43 is fully compatible with all F&eIT Series components that require 5 V DC ± 5 % input, including up to eight stacked device modules (total current ≤ 3 A).

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5. Components & Accessories

Included Items
- POW‑DD43 main unit
- Removable 2‑piece terminal connectors (input/output)
- Installation guide

Optional Accessories
- FAN‑FIT Cooling Fan (DC 5 V ± 10 %, 0.18 A, 0.1 m³/min airflow) – extends operating temperature to 60 °C.
- DIN‑rail mounting hardware (standard 35 mm rail).
- UTP Cable Power Supply (for network devices requiring PoE‑like support).
- AC‑DC Adapters (POA‑AD22 or POW‑AD series) for mixed power environments.

Connectors
- Input: 2‑pin removable terminal block for 30–50 V DC supply.
- Output: 2‑pin removable terminal block for 5 V DC load connection.

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6. Installation & Setup

Mounting Requirements
- Standard 35 mm DIN rail mounting mechanism integrated into the housing.
- One‑touch installation and removal using a flat‑head screwdriver.
- Recommended orientation: vertical mount for optimal air convection.

Electrical Connection
1. Connect the 30–50 V DC input to the input terminal block (ensure polarity is correct).
2. Connect the 5 V DC output to the F&eIT bus or device module power input.
3. Verify that the total current draw of connected modules does not exceed 3 A.
4. Ensure proper grounding (D‑type ground connection).

Configuration
- No software configuration required; the unit operates as a stand‑alone regulated power supply.
- For systems using multiple modules, ensure the combined current consumption is within the rated output capacity (3 A max).

Environmental Conditions
- Operate in ambient temperatures between 0 and 50 °C (extendable to 60 °C with FAN‑FIT).
- Maintain humidity between 10 and 90 % RH without condensation.
- Avoid exposure to corrosive gases or excessive dust.

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7. Performance & Capabilities

- Output Stability: ± 5 % voltage regulation across the entire load range.
- Load Capacity: Supports up to 3 A continuous current for multiple modules or controllers.
- Efficiency: High conversion efficiency (typically > 80 %) for low heat generation.
- Ripple & Noise: Low output ripple ensures stable operation of sensitive digital and analog modules.
- Protection Features: Short‑circuit and over‑current protection built into the design to safeguard connected devices.
- Thermal Performance: Fanless design with natural air cooling suitable for continuous operation in industrial environments.
- Reliability: Designed for 24/7 operation with industrial‑grade components and wide input tolerance.
- Limitations: Total current draw of connected modules must not exceed 3 A; ambient temperature must remain within specified limits for stable operation.

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8. Standards & Compliance

- Electrical Safety: Designed for industrial control applications with D‑type ground classification (former Class 3).
- Noise Immunity: Complies with IEC 1000‑4‑4 Level 3 and EN 61000‑4‑4 Level 3 standards (AC line 2 kV, signal line 1 kV).
- EMC Compliance: FCC Class A (industrial use).
- Environmental Compliance: Lead‑free construction in accordance with RoHS directives.
- CE Marking: Conforms to European safety and EMC requirements.
- Quality Assurance: Manufactured under CONTEC’s ISO 9001‑certified quality management system.

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9. Additional Information

Warranty & Support
- Standard one‑year warranty from date of purchase.
- Free repair or replacement service during the warranty period in accordance with CONTEC’s warranty policy.
- Technical support available through CONTEC offices in Japan, U.S.A., Europe, Korea, China, and Taiwan.

Maintenance
- No routine maintenance required.
- Periodically inspect for dust accumulation and ensure adequate ventilation.
- Verify tightness of terminal connections during scheduled equipment maintenance.

Updates & Documentation
- Latest product information and technical updates available at [www.contec.com](http://www.contec.com).
- Detailed user manuals and F&eIT system integration guides can be downloaded from the manufacturer’s website.

Related Products in the F&eIT Series
- AC‑DC Power Supplies: POW‑AD13GY (85–132 V AC in, 5 V 3 A out), POW‑AD22GY (85–264 V AC in, 5 V 2 A out), POW‑AD25GY (85–264 V AC in, 5 V 4.2–4.6 A out).
- DC‑DC Power Supply: POW‑DD10GY (10–30 V DC in, 5 V 3 A out).
- AC Adapter: POA‑AD22 (90–264 V AC in, 5 V 2 A out).
- Cooling Fan: FAN‑FIT (DC 5 V ± 10 %, 0.18 A, extends temperature range to 60 °C).

System Integration Example
A typical F&eIT system may include a CPU‑CA20 I/O Controller Module, several device modules (e.g., DI‑16, DO‑16, ADI12‑8), and a Monitoring & Control Server SVR‑MMF(FIT)GY. The POW‑DD43 provides a stable 5 V DC supply to the entire stack via the F&eIT bus connector, ensuring reliable operation of up to eight modules (total current ≤ 3 A).

Environmental and Safety Notes
- Operate only within specified temperature and humidity ranges.
- Avoid exposure to corrosive gases or excessive dust.
- Ensure proper grounding to prevent electrical noise interference.
- Disconnect input power before wiring or maintenance.

Manufacturer Contact Information
CONTEC CO., LTD.
3‑9‑31 Himesato, Nishiyodogawa‑ku, Osaka 555‑0025, Japan
Tel: +81‑6‑6477‑5219 Fax: +81‑6‑6477‑1692
Website: [www.contec.com](http://www.contec.com)

Regional offices are located in the U.S.A., Europe, Korea, China, and Taiwan for localized sales and technical support.

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### Summary

The CONTEC POW‑DD43 is a robust, compact, and efficient DC‑DC power supply engineered for industrial automation and embedded control systems within the F&eIT Series. Accepting a 30 – 50 V DC input, it delivers a regulated 5 V DC output at up to 3 A, providing reliable power for microcontrollers, I/O controllers, servers, and device modules. Its DIN‑rail mountable, fanless, and noise‑resistant design ensures dependable operation in demanding industrial environments.

With CE and FCC Class A compliance, wide environmental tolerance, and seamless integration into CONTEC’s distributed monitoring and control architecture, the POW‑DD43 is an essential component for building scalable, networked, and energy‑efficient industrial systems.