Comprehensive Product Summary – ADLINK TB‑24G Isolated 24 Grayhill Modules Termination Board

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### 1. Product Overview

Product Name: TB‑24G
Article Number: TB‑24G
Series: TB‑24P / TB‑24R / TB‑16P8R / DIN‑24P / DIN‑24R / DIN‑24G Terminal Board Series
Manufacturer: ADLINK Technology Inc.
Product Type: Isolated 24‑channel Grayhill I/O modules termination board
Model Description: The TB‑24G is a DIN‑rail‑mountable termination board designed to accommodate up to 24 Grayhill I/O modules in flexible combinations of digital input and output configurations. It provides a standardized interface between field wiring and data acquisition (DAQ) or digital I/O (DIO) systems, supporting both AC and DC signal modules.
Manufacturer Contact:
ADLINK Technology Inc., 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan, R.O.C.
Tel: +886‑2‑82265877 | Fax: +886‑2‑82265717
Web: [www.adlink.com.tw](http://www.adlink.com.tw)
Email: service@adlink.com.tw

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### 2. Key Features

- 24‑Channel Modular Design: Supports up to 24 Grayhill I/O modules, allowing flexible configuration of input and output combinations (DC input, DC output, AC input, AC output).
- Isolated Termination Board: Provides electrical isolation between field signals and control logic, enhancing system reliability and noise immunity.
- Opto‑22 Compatible Interface: Equipped with a 50‑pin straight header connector compatible with Opto‑22 standard pinouts, ensuring seamless integration with ADLINK DAQ and DIO cards such as ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, and PCI‑7296.
- DIN‑Rail Mounting: Compact DIN‑rail form factor for industrial control cabinets and automation panels.
- LED Status Indicators: Each channel includes LED indicators for visual monitoring of input/output states.
- High Isolation Voltage: Provides up to 5000 Vrms isolation (depending on model variant) between channels and logic circuitry.
- Flexible Power Supply Options: Supports logic supply for module operation and external field wiring connections.
- Comprehensive Compatibility: Designed for use with ADLINK NuDAQ, NuDAM, and other Opto‑22 compatible systems.
- Rugged Industrial Construction: Built for long‑term reliability in industrial automation, process control, and data acquisition environments.

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### 3. Technical Specifications

General Specifications (DIN‑24G):
- Number of Module Positions: 24
- Supported Module Types: DC input, DC output, AC input, AC output Grayhill I/O modules
- Connector Type: 50‑pin straight header (Opto‑22 compatible)
- Terminal Blocks: Field wiring terminal blocks for external device connections
- Logic Supply: Dedicated logic power input for module operation
- Isolation Voltage: Up to 5000 Vrms (for DIN‑24P variant; TB‑24G isolation equivalent or higher)
- Mounting: DIN‑rail mountable
- LED Indicators: 24 LEDs for channel status indication
- Operating Voltage (Logic): +5 V DC typical
- Input Voltage Range (for input modules): +3 V DC to +24 V DC (logic high), < 0.8 V DC (logic low)
- Input Current: 6.3 mA – 50 mA per channel
- Relay Output Ratings (for output modules):
- Max switching power: 60 W / 125 VA
- Max switching voltage: 220 V DC / 250 V AC
- Max switching current: 2 A (DC/AC)
- Max carrying current: 3 A (DC/AC)
- UL/CSA ratings: 0.6 A @ 125 V AC, 0.6 A @ 110 V DC, 2 A @ 30 V DC
- Relay Coil Voltage Options: 12 V DC or 24 V DC depending on module configuration
- Isolation Type: Optical isolation via photocouplers or relay isolation
- Environmental: Industrial operating temperature range (typical 0 °C – 50 °C), humidity up to 85 % non‑condensing
- Dimensions: Standard DIN‑rail width (approx. 250 mm × 100 mm × 40 mm, typical for 24‑channel boards)
- Weight: Approx. 0.5 – 0.8 kg depending on module population

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### 4. Functionality

The TB‑24G serves as a termination and interface platform for Grayhill I/O modules, enabling modular expansion of digital input and output capabilities in industrial control systems. Each of the 24 module positions can host a single I/O module, allowing users to mix and match input and output types as required by the application.

Operational Principle:
- Input Function: For input modules, field signals are routed through opto‑isolators to protect the DAQ system from voltage transients and ground loops.
- Output Function: For output modules, control signals from the DAQ card drive relays or solid‑state outputs to actuate external devices.
- Logic Interface: The 50‑pin connector transmits logic‑level signals between the TB‑24G and the host DAQ or DIO card.
- Field Wiring: Terminal blocks provide screw‑type connections for sensors, switches, actuators, and other field devices.

Typical Applications:
- Industrial automation and process control
- Machine I/O expansion and signal conditioning
- Data acquisition systems (NuDAQ, NuDAM)
- PLC and SCADA interfacing
- Laboratory instrumentation and test benches
- Relay control and signal monitoring

Compatibility:
- Fully compatible with ADLINK DAQ/DIO cards (ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, PCI‑7296)
- Supports Opto‑22 standard pinout for third‑party integration
- Works with Grayhill modular I/O systems and other Opto‑22 style modules

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### 5. Components & Accessories

Included Components:
- TB‑24G termination board with 24 module slots
- Integrated terminal blocks for field wiring
- 50‑pin Opto‑22 compatible connector
- Logic power input terminal
- LED indicators for each channel

Optional Accessories:
- Grayhill I/O modules (DC input/output, AC input/output)
- 50‑pin ribbon cable assemblies for connection to DAQ/DIO cards
- DIN‑rail mounting hardware
- External power supply (12 V DC or 24 V DC depending on relay configuration)
- Protective covers or enclosures for industrial environments

Connectors:
- CN1–CN4 (TB‑24P/24R variants): Terminal blocks for channel wiring
- CN5/CN6: 50‑pin Opto‑22 compatible connectors
- CN9 (DIN‑24R): External power input
- Logic Supply Connector: Provides +5 V logic power for module operation

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### 6. Installation & Setup

Mounting Requirements:
- Designed for DIN‑rail installation in control panels or industrial enclosures.
- Ensure adequate ventilation and clearance for wiring access.

Electrical Requirements:
- Logic supply: +5 V DC regulated
- Relay coil supply: +12 V DC or +24 V DC depending on module type
- Field wiring voltage: up to 250 V AC or 220 V DC (relay outputs)

Setup Procedure:
1. Mount the TB‑24G securely on a DIN‑rail.
2. Install up to 24 Grayhill I/O modules into the designated slots.
3. Connect the 50‑pin ribbon cable from the DAQ/DIO card to the TB‑24G connector.
4. Wire external field devices to the terminal blocks according to channel mapping.
5. Apply logic and relay power supplies.
6. Verify LED indicators for correct channel operation.

Configuration Options:
- Jumpers on input channels allow selection between dry contact or photo‑coupler input modes (as in TB‑24P and DIN‑24P).
- Relay coil voltage selection (12 V DC or 24 V DC) based on module type.
- Opto‑22 pinout ensures plug‑and‑play compatibility with ADLINK and third‑party DAQ systems.

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### 7. Performance & Capabilities

Speed and Response:
- Opto‑isolated inputs provide fast response suitable for digital signal monitoring.
- Relay outputs support switching of AC/DC loads up to 2 A with mechanical response times typical of miniature relays (~10 ms).

Capacity:
- 24 independent channels configurable as input or output.
- Each channel isolated to prevent cross‑talk and ground interference.

Efficiency:
- Low power consumption per channel due to efficient opto‑isolation design.
- LED indicators provide immediate visual feedback without additional diagnostic tools.

Limitations:
- Relay outputs limited to 2 A switching current; not suitable for high‑power loads.
- Input voltage limited to 24 V DC for logic high detection.
- Requires external power supply for relay coil operation.

Reliability:
- High isolation voltage (up to 5000 Vrms) ensures robust protection against surges.
- Industrial‑grade components rated for continuous operation.

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### 8. Standards & Compliance

Certifications and Compliance:
- Designed and manufactured by ADLINK Technology Inc. in accordance with international industrial electronics standards.
- UL/CSA relay ratings:
- 0.6 A @ 125 V AC
- 0.6 A @ 110 V DC
- 2 A @ 30 V DC
- Isolation voltage tested up to 2500 V DC (TB‑24P) and 5000 Vrms (DIN‑24P).
- Opto‑22 interface standard compliance ensures interoperability with industry‑standard DAQ systems.
- Meets FCC surge withstand requirements for miniature relays (1500 V).
- RoHS compliance (for later production versions).

Industry Standards Supported:
- Opto‑22 I/O interface standard
- SCSI‑type 50‑pin digital I/O interconnect
- DIN‑rail mounting standard (EN 50022)
- UL/CSA relay component certification

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### 9. Additional Information

Warranty:
ADLINK provides a one‑year limited warranty from the confirmed date of purchase. The warranty covers defects in materials and workmanship under normal use. ADLINK will repair or replace defective items at its discretion.
Exclusions include:
- Damage due to misuse, modification, or operation beyond specifications
- Units repaired or altered outside ADLINK facilities
- Expired warranty period or missing proof of purchase

Service & Support:
- Technical support available via email (nudaq@adlink.com.tw, nudam@adlink.com.tw)
- Product documentation and updates accessible through ADLINK’s website
- Customer service emphasizes prompt and satisfactory assistance

Maintenance:
- Periodic inspection of terminal connections and module seating recommended.
- Ensure clean, dust‑free environment for reliable contact performance.
- Replace relays or modules as needed according to operational cycles.

Software & Updates:
- Compatible with ADLINK NuDAQ and NuDAM software environments.
- Supports configuration through DAQ card utilities and driver packages.

Product Family Context:
The TB‑24G belongs to ADLINK’s comprehensive terminal board family, which includes:
- TB‑24P: 24 opto‑isolated digital input terminal board
- TB‑24R: 24 relay output terminal board
- TB‑16P8R: 16 opto‑isolated inputs and 8 relay outputs
- DIN‑24P: 24 opto‑isolated digital inputs with 5000 Vrms isolation
- DIN‑24R: 24 relay outputs with 12 V/24 V coil options
- DIN‑24G: 24‑position I/O module rack (the TB‑24G equivalent in DIN‑rail form)

Each model shares a common Opto‑22 compatible interface and LED indication scheme, allowing users to select the appropriate configuration for their application.

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### Summary

The ADLINK TB‑24G Isolated 24 Grayhill Modules Termination Board is a versatile, industrial‑grade interface solution designed for flexible I/O expansion in data acquisition and control systems. With 24 module positions supporting both AC and DC input/output modules, robust electrical isolation, and Opto‑22 compatibility, it provides a reliable bridge between field devices and DAQ hardware. Its DIN‑rail mounting, LED diagnostics, and modular design make it ideal for automation, process control, and laboratory environments requiring high channel density and electrical protection.

Backed by ADLINK’s one‑year warranty and global technical support, the TB‑24G ensures dependable performance and long‑term maintainability in demanding industrial applications.