1. Product Overview

Product Name: Isolated Analog Input Module
Model: ADI12-8(FIT)GY
Series: F&eIT Series (Factory and Enterprise IT)
Article Number: ADI12-8(FIT)GY
Manufacturer: CONTEC CO., LTD., Osaka, Japan

The ADI12-8(FIT)GY is an Ethernet-compatible, bus-isolated analog input module designed for distributed industrial monitoring and control systems. It forms part of CONTEC’s F&eIT (Factory and Enterprise IT) Series, a modular platform integrating field-level data acquisition with enterprise-level information systems. The module provides eight differential analog input channels with 12-bit resolution and full electrical isolation between the analog input circuitry and the system bus. It is engineered for DIN-rail mounting and direct stacking with compatible controller modules such as the CPU-SBxx(FIT)GY microcontrollers, CPU-CAxx(FIT)GY I/O controllers, and SVR-MMF(FIT)GY monitoring servers.

---

2. Key Features

- Eight Differential Analog Inputs: Provides eight isolated differential input channels for precise voltage measurement.
- 12-bit Resolution: High-resolution A/D conversion for accurate analog signal digitization.
- Bus Isolation: Complete electrical isolation between analog input circuitry and the F&eIT system bus, ensuring noise immunity and protection from ground loops.
- Selectable Input Ranges: Supports bipolar (±10 V, ±5 V) and unipolar (0–10 V, 0–5 V) input ranges, configurable via software.
- High-Speed Conversion: Conversion rate of (number of channels × 10 µs) + 20 µs, enabling fast data acquisition.
- Programmable Sampling Timer: Internal sampling timer adjustable from 10 µs to 1,073,741,824 µs (approx. 17.9 minutes).
- Interrupt Support: Programmable interrupt generation on IRQ5, IRQ7, or IRQ9 for event-driven data acquisition.
- Compact DIN-Rail Design: 25.2 mm (W) × 64.7 mm (D) × 94.0 mm (H) form factor with one-touch DIN-rail mounting.
- Stackable Architecture: Connects directly to controller modules via the F&eIT bus without backplanes or cables.
- Software Configurable: Fully programmable through CONTEC’s Windows driver libraries (API-SBP(W32), API-CAP(W32), API-USBP(WDM)) or via F&eIT protocol over Ethernet.
- Web-Based Monitoring: When used with SVR-MMF(FIT)GY or SVR-IOA(FIT)GY servers, data can be monitored and logged through a standard web browser.
- Industrial Durability: Designed for 0–50°C operation, 10–90% RH, and compliance with IEC/EN61000-4-4 Level 3 noise immunity standards.

---

3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Input Type | Bus-isolated voltage input |
| Number of Channels | 8 differential inputs |
| Input Ranges | Bipolar ±10 V, ±5 V; Unipolar 0–10 V, 0–5 V |
| Maximum Input Voltage | ±20 V |
| Input Impedance | ≥1 MΩ |
| Resolution | 12 bits |
| Non-Linearity Error | ±3 LSB (typical) |
| Conversion Rate | (Number of channels × 10 µs) + 20 µs |
| Data Buffer | 8 words |
| Sampling Timer Range | 10 µs to 1,073,741,824 µs |
| Interrupts | IRQ5, IRQ7, or IRQ9 (programmable) |
| Internal Power Consumption | 5 VDC ±5%, 350 mA (max.) |
| Signal Extension Length | 1.5 m (max.) |
| Dimensions (W × D × H) | 25.2 × 64.7 × 94.0 mm (excluding protrusions) |
| Weight | 100 g |
| Mounting | 35 mm DIN rail (standard) |
| Connector Type | FK-MC 0.5/12-ST-2.5 (Phoenix Contact) |
| Applicable Wire Size | AWG 28–20 |
| Operating Temperature | 0–50°C |
| Storage Temperature | –10–60°C |
| Operating Humidity | 10–90% RH (no condensation) |
| Noise Resistance | AC line: 2 kV, Signal line: 1 kV (IEC1000-4-4 Level 3) |
| Vibration Resistance | 10–150 Hz, 0.15 mm/2.0 G (IEC68-2-6) |
| Shock Resistance | 15 G, 11 ms half-sine (IEC68-2-27) |

---

4. Functionality

The ADI12-8(FIT)GY converts external analog voltage signals into digital data for processing by F&eIT controller modules. Each channel supports differential input, allowing accurate measurement even in noisy industrial environments or when long signal cables are used. The module’s isolation barrier protects the controller from high common-mode voltages and electrical interference.

Operating Modes:
- Software Mode: Single or multi-channel sampling initiated by software commands.
- Clock Mode: Periodic sampling synchronized with an internal or external clock signal.

Control Interfaces:
- I/O Address Map Control: Direct register access when connected to CPU-SBxx(FIT)GY microcontrollers.
- Memory Address Map Control: Network-based access via CPU-CAxx(FIT)GY I/O controllers.
- Driver-Based Control: Through Windows API libraries (API-SBP(W32), API-CAP(W32), API-USBP(WDM)).
- Web Control: Remote monitoring and configuration via web browser when used with SVR-MMF(FIT)GY or SVR-IOA(FIT)GY servers.

Use Cases:
- Industrial process monitoring (temperature, pressure, flow sensors).
- Factory automation and data logging.
- Remote analog signal acquisition over Ethernet.
- Integration with SCADA/HMI systems via DDE or SuiteLink.
- Laboratory instrumentation and test automation.

Compatibility:
- CPU-SBxx(FIT)GY Micro Controllers
- CPU-CAxx(FIT)GY I/O Controllers
- SVR-MMF(FIT)GY Monitoring & Control Servers
- SVR-IOA(FIT)GY I/O Assist Servers
- ADI12-8(USB)GY USB-based analog input modules

---

5. Components & Accessories

Included Items:
- ADI12-8(FIT)GY module (1 unit)
- First Step Guide (1 copy)
- CD-ROM (F&eIT Series Setup Disk, includes drivers and manuals)
- Two interface connector plugs (Phoenix Contact FK-MC 0.5/12-ST-2.5)

Optional Accessories:
- ATLF-8(FIT)GY: Dedicated low-pass filter module (10 Hz cutoff, 8 channels).
- DIN Rail Mounting Hardware: Integrated one-touch mechanism.
- Power Supplies: POW-AD22GY (AC-DC 5V/2A), POW-DD10GY (DC-DC 5V/3A).
- Cooling Fan (optional): FAN-FIT (DC5V, 0.18A, 0.1 m³/min airflow).

Connectors:
- 12-pin, 2.5 mm pitch, 4.0 A nominal current (Phoenix Contact MC0.5/12-G-2.5).
- Screwless spring terminal type for easy wiring (AWG 28–20).

---

6. Installation & Setup

Mounting:
The module mounts directly onto a 35 mm DIN rail using a one-touch latch mechanism. It can be easily installed or removed using a flathead screwdriver.

Stacking Configuration:
Modules are interconnected laterally via the F&eIT bus connector with a safety lock mechanism. Up to eight device modules can be stacked on a single controller, provided total current consumption does not exceed 3.0 A.

Device ID Setting:
A rotary switch on the front panel assigns a unique Device ID (0–7). The factory default is ID 0.

LED Indicators:
- RUN (Green): Indicates communication with the controller is active.
- STATUS (Red): Illuminates when an A/D conversion error occurs.

Wiring:
Each channel provides differential (+) and (–) terminals with a common analog ground (AG). For current input measurement, a precision 250 Ω resistor can be connected between the (+) and (–) terminals to convert 0–20 mA signals into 0–5 V voltage inputs.

Environmental Requirements:
Install in a clean, dry, vibration-free environment. Avoid corrosive gases and excessive dust. Maintain ambient temperature within 0–50°C.

---

7. Performance & Capabilities

- High-Speed Sampling: Minimum conversion time of 100 µs for eight channels.
- Accuracy: ±0.2% typical, ±3 LSB non-linearity.
- Isolation: Complete galvanic isolation between analog and digital sections.
- Data Throughput: Supports cyclic data transmission over Ethernet when used with I/O Assist Servers.
- Interrupt Handling: Programmable interrupt sources for data-ready, overwrite, or clock error events.
- Buffering: 8-word internal buffer prevents data loss during high-speed sampling.
- Reliability: Fanless, solid-state design with no moving parts.
- Limitations: No per-channel range configuration; all channels share a common input range. Maximum cable length 1.5 m for analog signals.

---

8. Standards & Compliance

- EMC Compliance:
- IEC1000-4-4 Level 3 / EN61000-4-4 Level 3 (Electrical Fast Transient/Burst Immunity)
- IEC1000-4-2 Level 2/3 (Electrostatic Discharge Immunity)
- Vibration & Shock:
- IEC68-2-6 (10–150 Hz, 2.0 G)
- IEC68-2-27 (15 G, 11 ms half-sine)
- Grounding: D-type (former Class 3) industrial ground.
- FCC Compliance: Class A digital device (Part 15).
- CE Marking: Conforms to European EMC directives (except for a few models).
- RoHS: Lead-free design compliant with environmental standards.

---

9. Additional Information

Warranty:
One-year limited warranty from the date of purchase. Covers defects in materials and workmanship. Excludes damage from misuse, modification, or environmental factors.

Service & Support:
Repairs and replacements are handled through CONTEC’s authorized distributors. An RMA (Return Merchandise Authorization) number is required before returning any product.

Maintenance:
- Periodically inspect connectors and wiring for corrosion or looseness.
- Avoid operating with power applied during module stacking or removal.
- Replace lithium backup cells through CONTEC service centers only.

Software & Drivers:
- API-SBP(W32): For CPU-SBxx(FIT)GY microcontrollers.
- API-CAP(W32): For CPU-CAxx(FIT)GY I/O controllers.
- API-USBP(WDM): For USB-based modules.
- IO-LIB(LNX): Linux general-purpose I/O driver (available free from CONTEC’s website).
All libraries include sample programs in Visual C++, Visual Basic, and Delphi.

Firmware & Updates:
Firmware updates and driver downloads are available free of charge at [www.contec.com](http://www.contec.com).

Support Offices:
- Japan (Headquarters): Osaka, Tel: +81-6-6477-5219
- USA: San Jose, CA, Tel: +1-408-954-7700
- Europe: Hoofddorp, The Netherlands, Tel: +31-23-567-3030
- China: Shanghai, Tel: +86-21-6236-8877
- Korea: Seoul, Tel: +82-2-2636-4277
- Taiwan: Taipei, Tel: +886-2-2647-9353

Product Lifecycle & Updates:
CONTEC periodically releases firmware revisions and driver updates to enhance performance and compatibility. Users are encouraged to check the official website for the latest documentation and software.

---

Summary

The CONTEC ADI12-8(FIT)GY is a robust, high-precision analog input module engineered for industrial Ethernet-based distributed I/O systems. With eight isolated differential channels, 12-bit resolution, and flexible input ranges, it provides reliable analog data acquisition in harsh environments. Its modular F&eIT architecture allows seamless integration with microcontrollers, I/O controllers, and web-based monitoring servers, enabling scalable, real-time data collection from the factory floor to enterprise-level systems. The ADI12-8(FIT)GY combines compact design, industrial durability, and open software architecture, making it an ideal choice for automation, process control, and remote monitoring applications.