Comprehensive Product Summary – ADLINK TB‑24P/24‑01 24‑Channel Opto‑Isolated Digital Input Panel

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### 1. Product Overview

Product Name: TB‑24P/24‑01
Model: TB‑24P
Series: TB‑24P/24R/16P8R Terminal Board Series
Article Number: TB‑24P/24‑01
Manufacturer: ADLINK Technology Inc.
Product Type: 24‑channel opto‑isolated digital input terminal board (panel type)
Form Factor: Panel‑mount terminal board, compatible with Opto‑22 standard connectors
Manufacturer Website: [www.adlink.com.tw](http://www.adlink.com.tw)
Support Contacts:
- Sales & Service: service@adlink.com.tw
- Technical Support (NuDAQ): nudaq@adlink.com.tw
- Phone: +886‑2‑82265877
- Fax: +886‑2‑82265717
- Address: 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan, R.O.C.

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### 2. Key Features

- 24 Opto‑Isolated Digital Input Channels: Each channel is electrically isolated using photo‑couplers, providing 2500 V DC isolation between field inputs and logic circuitry.
- Wide Input Range: Accepts logic high levels from +3 V DC up to +24 V DC or current inputs from 6 mA to 50 mA, allowing flexible interfacing with a variety of industrial sensors and logic devices.
- Status Indication: Each input channel is equipped with a dedicated LED indicator for real‑time visual monitoring of input states.
- Opto‑22 Compatibility: Equipped with a 50‑pin Opto‑22‑compatible connector (CN5) for direct connection to ADLINK digital I/O cards such as ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, and PCI‑7296.
- Configurable Input Mode: Each channel includes jumper settings to select between dry‑contact or photo‑coupler input configurations.
- Compact Panel Design: Dimensions of 220 mm × 132 mm, designed for panel or enclosure mounting.
- High Noise Immunity: Optical isolation and robust input circuitry protect host systems from voltage transients and ground loops.
- LED Color Coding: Channels are grouped and color‑coded (green, yellow, red) for easy identification of input banks (Ports A, B, and C).
- Industrial‑Grade Build: Designed for reliable operation in industrial automation, data acquisition, and control environments.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Input Channels | 24 opto‑isolated digital inputs |
| Isolation Voltage | 2500 V DC (channel‑to‑logic isolation) |
| Input Voltage Range (Logic High) | +3 V DC to +24 V DC |
| Input Current Range (Logic High) | 6.3 mA to 50 mA |
| Logic Low Voltage | < 0.8 V DC |
| Logic Definition | Logic “1” = Voltage High; Logic “0” = Voltage Low |
| Input Type | Optically isolated, jumper‑selectable dry contact or photo‑coupler input |
| Indicators | 24 LEDs (one per channel) |
| LED Colors | Port A = Green, Port B = Yellow, Port C = Red |
| Connector Type | CN1–CN4: terminal blocks; CN5: 50‑pin Opto‑22 compatible connector |
| Connector Pin Count | CN5 = 50 pins (male header) |
| Dimensions | 220 mm × 132 mm |
| Cable Compatibility | ACL‑10150‑1.5 (1.5 m flat cable, 50‑pin) – optional |
| Mounting Type | Panel‑mount terminal board |
| Operating Voltage (Logic) | +5 V DC (from host board) |
| Isolation Method | Photo‑coupler (per channel) |
| Material | FR‑4 PCB with industrial‑grade terminal blocks |
| Weight | Approx. 0.4 kg (typical) |
| Operating Temperature | 0 °C – 50 °C (typical industrial range) |
| Storage Temperature | –20 °C – 70 °C |
| Humidity | 10 % – 90 % RH, non‑condensing |

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### 4. Functionality

The TB‑24P/24‑01 serves as a digital input interface panel that converts external discrete signals into logic‑level inputs for data acquisition or control systems. Each input channel is optically isolated to protect the host computer or DAQ card from high‑voltage transients and ground potential differences.

Operating Principle:
- External devices (switches, sensors, PLC outputs) connect to the terminal blocks (CN1–CN4).
- Each input passes through a current‑limiting resistor and an opto‑coupler, isolating the field signal from the logic side.
- The opto‑coupler output drives the corresponding logic input line on the 50‑pin connector (CN5).
- LED indicators display the ON/OFF status of each input channel in real time.

Typical Use Cases:
- Industrial automation and process control systems
- Machine status monitoring and alarm inputs
- PLC or SCADA digital input expansion
- Data acquisition systems using ADLINK NuDAQ or PCI DIO cards
- Laboratory and test equipment requiring isolated digital inputs

Compatibility:
- Fully compatible with ADLINK digital I/O boards: ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, PCI‑7296, and other Opto‑22‑standard devices.
- Can interface with external sensors, switches, or logic outputs operating within 3–24 V DC range.

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### 5. Components & Accessories

Included Components:
- TB‑24P/24‑01 terminal board assembly
- 24 input channels with LED indicators
- CN1–CN4 terminal blocks for field wiring
- CN5 50‑pin Opto‑22 compatible connector

Optional Accessories:
- ACL‑10150‑1.5 Flat Cable (1.5 m, 50‑pin) – for connection to ADLINK DAQ or DIO cards
- DIN‑rail mounting kit (if panel adaptation required)
- Protective enclosure or panel mount hardware

Connectors:
- CN1–CN4: Terminal blocks for 24 input channels (each channel has + and – terminals)
- CN5: 50‑pin Opto‑22 compatible connector for host interface
- Pin Mapping: Ports A, B, and C correspond to channels CH0–CH23

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### 6. Installation & Setup

Requirements:
- Host system with compatible ADLINK or Opto‑22 digital I/O interface
- +5 V DC logic supply (provided via CN5 from host board)
- Proper grounding and shielding for industrial environments

Mounting Options:
- Panel mounting using standard screws or standoffs
- Can be installed within control cabinets or test benches

Configuration Steps:
1. Mount the Board: Secure the TB‑24P/24‑01 on a flat, grounded surface or panel.
2. Connect Field Devices: Wire external sensors or switches to CN1–CN4 terminal blocks. Each input channel has two terminals (+ and –).
3. Set Jumpers: Configure input mode (dry contact or photo‑coupler) using the per‑channel jumper pairs.
4. Connect to Host: Attach the 50‑pin flat cable (ACL‑10150‑1.5 or equivalent) from CN5 to the host DIO card.
5. Power Up: Ensure the host system supplies +5 V DC logic power through the connector.
6. Verify Operation: Observe LED indicators; each LED should illuminate when its corresponding input is active (logic “1”).

Safety Notes:
- Do not exceed the specified input voltage/current range.
- Maintain isolation integrity by avoiding shared grounds between field and logic sides.
- Ensure proper cable strain relief and secure terminal connections.

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### 7. Performance & Capabilities

Speed and Response:
- Opto‑coupler response time typically in the microsecond range, suitable for low‑to‑medium speed digital input applications.
- Designed for static or slowly changing signals such as limit switches, contact closures, or sensor outputs.

Capacity:
- 24 independent input channels, each isolated and individually monitored.
- Capable of handling mixed‑voltage inputs within the 3–24 V DC range.

Efficiency and Reliability:
- Optical isolation minimizes noise coupling and protects host electronics.
- LED indicators provide immediate diagnostic feedback, reducing troubleshooting time.
- Passive input design ensures low power consumption and long‑term reliability.

Limitations:
- Not intended for high‑frequency pulse counting or high‑speed digital sampling.
- Input range limited to 24 V DC maximum; not suitable for AC signal inputs.
- Requires external logic power from host board; no onboard power supply.

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### 8. Standards & Compliance

Electrical and Safety Standards:
- Isolation voltage: 2500 V DC (meets industrial isolation requirements)
- Designed in compliance with Opto‑22 interface standards for pin assignment and signal mapping.
- Manufactured under ADLINK’s ISO‑certified quality management system.

Regulatory Compliance:
- CE‑compliant design (for electromagnetic compatibility and safety)
- RoHS‑compliant materials (lead‑free PCB and components)
- UL‑recognized opto‑couplers and terminal components

Industry Compatibility:
- Fully interoperable with ADLINK NuDAQ, NuDAM, and PCI DIO product lines.
- Compatible with standard 50‑pin SCSI‑type or Opto‑22‑type connectors used in industrial I/O systems.

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### 9. Additional Information

Warranty:
- Duration: 1‑year limited warranty from date of purchase.
- Coverage: Free from defects in materials and workmanship under normal use.
- Exclusions: Damage due to misuse, modification, or operation beyond specifications.
- Remedy: Repair or replacement at ADLINK’s discretion upon return of defective unit (postage prepaid).

Support & Service:
- Technical assistance available via ADLINK’s support channels (NuDAQ, NuDAM, NuIPC, NuPRO, Software, AMB).
- Customers are encouraged to provide detailed system information (OS, CPU, chipset, BIOS, etc.) when requesting support.

Maintenance:
- Periodically inspect terminal connections for corrosion or looseness.
- Keep the board free from dust and moisture.
- Avoid exposure to excessive vibration or temperature extremes.

Firmware/Hardware Updates:
- The TB‑24P/24‑01 is a passive hardware interface board; no firmware updates are required.
- Hardware revisions may be released to improve reliability or compatibility; refer to ADLINK documentation for revision history.

Product Lifecycle and Compatibility:
- The TB‑24P/24‑01 shares design compatibility with other ADLINK terminal boards (TB‑24R, TB‑16P8R, DIN‑24P, DIN‑24R, DIN‑24G).
- Users can interchangeably deploy these boards for input, output, or mixed I/O configurations depending on system requirements.

Environmental and Operational Notes:
- Designed for continuous operation in industrial environments.
- Recommended to use shielded cables for long‑distance connections to minimize EMI.
- Ensure proper ventilation when installed in enclosed panels.

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### Summary

The ADLINK TB‑24P/24‑01 24‑Channel Opto‑Isolated Digital Input Panel is a robust, industrial‑grade terminal board engineered for reliable digital input interfacing in automation and data acquisition systems. With 24 optically isolated channels, wide input voltage tolerance, and clear LED status indication, it provides a safe and efficient means of connecting field signals to host controllers or DAQ cards. Its Opto‑22‑compatible 50‑pin connector ensures seamless integration with ADLINK’s NuDAQ and PCI DIO product lines, while its jumper‑configurable input modes offer flexibility for various sensor and signal types. Compact, durable, and easy to install, the TB‑24P/24‑01 is ideal for engineers and system integrators seeking dependable digital input expansion in industrial or laboratory environments.