Comprehensive Product Summary – CONTEC DIO‑4/4(FIT)GY Ethernet Isolated Digital I/O Module

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### 1. Product Overview

Product Name: Ethernet Isolated 4/4 Digital I/O Module
Model: DIO‑4/4(FIT)GY
Series: F&eIT Series
Article Number: DIO‑4/4(FIT)
Manufacturer: CONTEC CO., LTD. (Osaka, Japan)

The CONTEC DIO‑4/4(FIT)GY is a compact, Ethernet‑based, optically isolated digital input/output module designed for industrial automation, monitoring, and control systems. It provides four opto‑isolated digital inputs (12–24 V DC) and four opto‑isolated digital outputs (12–48 V DC) in a DIN‑rail‑mountable form factor. The module is part of CONTEC’s F&eIT (Factory & Embedded Internet Technology) series, which enables distributed I/O control over Ethernet networks and integrates seamlessly with CONTEC controller units such as CPU‑CAxx(FIT)GY and CPU‑SBxx(FIT)GY.

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### 2. Key Features

- 4‑in/4‑out Digital I/O: Provides four opto‑isolated input channels and four opto‑isolated open‑collector output channels per module.
- Wide Voltage Range: Inputs accept 12–24 V DC; outputs support 12–48 V DC operation.
- Optical Isolation: Each channel is optically isolated to improve noise immunity and protect control circuitry from voltage transients.
- Flexible Input Compatibility: Accepts both current‑sink and current‑source type external devices.
- High‑Sink Output Capability: Each output channel can sink up to 150 mA at 24 V DC or 50 mA at 48 V DC.
- DIN‑Rail Mounting: Standard 35 mm DIN‑rail mounting mechanism for quick installation and modular stacking.
- Device ID Rotary Switch: Hardware rotary switch for assigning unique device IDs (0–7) for up to eight modules per controller.
- LED Indicators: Green LEDs for input status (X0–X3) and red LEDs for output status (Y0–Y3) provide clear visual feedback.
- Digital Filtering: Built‑in hardware digital filter configurable from 0.25 µs to 131 ms to suppress noise and contact bounce.
- Interrupt Control: Supports interrupt generation on input signal transitions (rising/falling edges) when used with compatible controllers.
- Web‑Based Monitoring: When connected to SVR‑MMF(FIT)GY or SVR‑MMF2(FIT) servers, I/O status can be monitored and configured via a standard web browser.
- Stackable Modular Design: Modules connect laterally to controller units without a backplane, simplifying system expansion.
- High Reliability: Designed for industrial environments with robust EMC, vibration, and shock resistance.

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### 3. Technical Specifications

Electrical Characteristics

| Parameter | Specification |
|------------|---------------|
| Input Type | Opto‑isolated, compatible with current sink/source outputs |
| Input Voltage Range | 12–24 V DC (±15 %) |
| Input Resistance | 3 kΩ |
| Input ON Current | ≥ 3.4 mA |
| Input OFF Current | ≤ 0.16 mA |
| Input Points | 4 points (common per 4) |
| Input Response Time | ≤ 1 ms |
| Output Type | Opto‑isolated open‑collector (current sink) |
| Output Voltage Range | 12–48 V DC (±15 %) |
| Output Current | 150 mA @ 12–24 V DC; 50 mA @ 36–48 V DC (max per channel) |
| Output Points | 4 points (common per 4) |
| Output Response Time | ≤ 1 ms |
| External Power Supply | 12–48 V DC (±15 %) for I/O circuits |
| Internal Power Consumption | 5 V DC ± 5 %, 150 mA (max) |
| Signal Cable Length | Up to approx. 50 m (depending on environment) |

Mechanical Characteristics

| Parameter | Specification |
|------------|---------------|
| Dimensions (W × D × H) | 25.2 × 64.7 × 94.0 mm (excluding protrusions) |
| Weight | Approx. 100 g |
| Mounting | 35 mm DIN‑rail, one‑touch latch |
| Connection Method | Stack connection via integrated side connector |
| Applicable Wire | AWG 28–16 (0.32–1.30 mm²) |
| Connector Type | 12‑pin, 3.81 mm pitch, Phoenix Contact MC1.5/12‑GF‑3.81 (8 A max) |
| Mating Plug | FRONT‑MC1.5/12‑SFT‑3.81 (Phoenix Contact) |

Environmental Conditions

| Parameter | Specification |
|------------|---------------|
| Operating Temperature | 0 – 50 °C |
| Storage Temperature | −10 – 60 °C |
| Operating Humidity | 10 – 90 % RH (non‑condensing) |
| Atmosphere | No corrosive gases, minimal dust |
| Vibration Resistance | 10–57 Hz / 0.15 mm amplitude; 57–150 Hz / 2 G, 80 min each axis |
| Shock Resistance | 15 G, half‑sine 11 ms, X/Y/Z axes |
| Noise Immunity | AC line 2 kV, signal line 1 kV (IEC 61000‑4‑4 Level 3) |
| ESD Resistance | 4 kV contact, 8 kV air (IEC 61000‑4‑2 Level 2/3) |

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### 4. Functionality

Operating Principle:
The DIO‑4/4(FIT)GY acts as a distributed digital I/O expansion module. It interfaces with a controller module (CPU‑CAxx(FIT)GY or CPU‑SBxx(FIT)GY) via the F&eIT bus or Ethernet network. Input signals from external sensors or switches are optically isolated and transmitted to the controller. Output signals from the controller drive external actuators, relays, or indicators through open‑collector transistors.

Use Cases and Applications:
- Factory automation and process control
- Remote I/O expansion for PLCs or embedded controllers
- Machine monitoring and alarm systems
- Data acquisition and distributed control over Ethernet
- Integration with SCADA or web‑based monitoring servers

Compatibility:
- Microcontroller Units: CPU‑SBxx(FIT)GY
- I/O Controller Modules: CPU‑CAxx(FIT)GY
- Monitoring Servers: SVR‑MMF(FIT)GY, SVR‑MMF2(FIT)
- Software Interfaces: API‑CAP(W32), API‑SBP(W32), FIT Protocol, Windows drivers, and web browser control

Control Methods:
- I/O Address Map Control: Direct I/O access when connected to CPU‑SBxx(FIT)GY.
- Memory Address Map Control: Network‑based memory mapping via CPU‑CAxx(FIT)GY.
- Web Control: Browser‑based configuration and monitoring through FIT server units.

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### 5. Components & Accessories

Package Contents:
1. DIO‑4/4(FIT)GY module (1 pc)
2. Interface connector plug (12‑pin, Phoenix Contact type)
3. First Step Guide (printed manual)
4. CD‑ROM (F&eIT Series Setup Disk) containing drivers, utilities, and user manuals

Optional Accessories:
- Additional interface plugs (MC1.5/12‑GF‑3.81)
- DIN‑rail mounting hardware (standard included)
- Controller modules (CPU‑CAxx(FIT)GY, CPU‑SBxx(FIT)GY)
- Power supply unit POW‑AD22GY (recommended for noise immunity compliance)

Connectors:
- 12‑pin terminal block for I/O signals
- Stack connector for lateral connection to controller modules
- Rotary switch for Device ID configuration

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### 6. Installation & Setup

Mounting:
- Attach directly to a 35 mm DIN rail using the integrated latch mechanism.
- Modules can be stacked side‑by‑side with controller units without a backplane.

Wiring:
- Strip 9–10 mm of insulation from each wire.
- Insert into the terminal opening and tighten the screw securely.
- Use AWG 28–16 wires; rated current 8 A max.
- Avoid pulling on cables when removing connectors.

Device ID Setting:
- Rotary switch on the front panel sets Device ID (0–7).
- Factory default: ID = 0.
- Up to eight modules can be connected per controller.

LED Indicators:
- Input LEDs (Green): ON = input active, OFF = inactive.
- Output LEDs (Red): ON = output active, OFF = inactive.

Connection to Controllers:
- Power off the controller before connecting or disconnecting modules.
- Stack the module laterally and ensure the connector is fully seated.
- Configure the module in the controller’s software or via web interface.

Surge Protection:
- For inductive loads (relays, solenoids), connect a diode or zener diode across the load within 50 cm to suppress surge voltage.

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### 7. Performance & Capabilities

Speed and Response:
- Input and output response times ≤ 1 ms ensure real‑time control suitability.
- Digital filter adjustable from 0.25 µs to 131 ms for noise suppression.

Capacity:
- 4 input and 4 output channels per module; multiple modules can be stacked for expansion.
- Each output channel supports up to 150 mA @ 24 V DC.

Efficiency and Reliability:
- Opto‑isolation minimizes ground loops and electrical noise.
- High‑sink transistor outputs ensure reliable actuation of external devices.
- Internal current consumption of only 150 mA @ 5 V DC allows efficient system power design.

Limitations:
- Outputs default to OFF at power‑on.
- Total current draw from the controller’s internal 5 V supply must not exceed 3 A (stack connector limit).
- Designed for industrial (Class A) environments; may cause interference in residential areas.

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### 8. Standards & Compliance

Regulatory Compliance:
- FCC Part 15 Class A: Complies with limits for industrial digital devices.
- EN 61000‑4‑2 / IEC 1000‑4‑2: ESD immunity (4 kV contact, 8 kV air).
- EN 61000‑4‑4 / IEC 1000‑4‑4: Electrical fast transient/burst immunity (AC 2 kV, signal 1 kV).
- JIS C0040 / IEC 68‑2‑6: Vibration resistance.
- JIS C0041 / IEC 68‑2‑27: Shock resistance.

Environmental Standards:
- RoHS‑compliant construction (lead‑free).
- Designed for industrial temperature and humidity ranges.

Safety Precautions:
- Do not modify or open the module casing.
- Operate within specified environmental limits.
- Avoid connecting or disconnecting under power.
- Ensure proper grounding and surge suppression for inductive loads.

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### 9. Additional Information

Warranty:
- Duration: One‑year limited warranty from date of purchase.
- Coverage: Defects in materials and workmanship.
- Exclusions: Physical damage, misuse, modification, or operation outside specifications.
- Service Procedure: Obtain an RMA (Return Merchandise Authorization) before returning products. Freight prepaid with proof of purchase required.

Support & Resources:
- Websites:
- Japanese: [https://www.contec.co.jp](https://www.contec.co.jp)
- English: [https://www.contec.com](https://www.contec.com)
- Chinese: [https://www.contec.com.cn](https://www.contec.com.cn)
- Downloads: Drivers, sample programs, and manuals available free of charge.
- Technical Assistance: Contact local CONTEC distributor or regional office for pricing, delivery, and technical inquiries.

Maintenance:
- Periodically inspect ventilation slits for dust or obstruction.
- Store in original packaging when not in use.
- Dispose of according to local electronic waste regulations.

Product Identification:
- Product Category Code: 1h (Digital I/O)
- Product ID: 05h (DIO‑4/4(FIT)GY)
- Revision Data: Managed internally by CONTEC; subject to change without notice.

Physical Drawing:
- External dimensions: 25.2 mm (W) × 64.7 mm (D) × 94.0 mm (H).
- Front panel includes terminal block, LED indicators, and rotary switch.

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### Summary

The CONTEC DIO‑4/4(FIT)GY is a robust, Ethernet‑enabled digital I/O module engineered for industrial automation and embedded control systems. It combines compact DIN‑rail design, optical isolation, flexible voltage compatibility, and modular scalability. With four digital inputs and four digital outputs, it serves as a versatile interface between sensors, actuators, and networked controllers. Its hardware digital filter, interrupt capability, and web‑based management make it suitable for both real‑time control and remote monitoring applications. Built to stringent industrial standards, the DIO‑4/4(FIT)GY ensures reliable operation in demanding environments while maintaining ease of installation and integration within CONTEC’s F&eIT ecosystem.