Comprehensive Product Summary: ADLINK TB‑24R/24‑01 Isolated 24‑Channel Relay Output Panel (230 VAC / 2 A)

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### 1. Product Overview

Product Name: TB‑24R/24‑01
Model: TB‑24R/24
Series: TB‑24P / 24R / 16P8R / DIN‑24P / DIN‑24R / DIN‑24G Terminal Board Series
Article Number: TB‑24R/24‑01
Manufacturer: ADLINK Technology Inc.
Manufacturer Address: 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan, R.O.C.
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
- NuDAM: nudam@adlink.com.tw
- NuIPC: nuipc@adlink.com.tw
- NuPRO: nupro@adlink.com.tw
- Software: sw@adlink.com.tw
- AMB: amb@adlink.com.tw
Telephone: +886‑2‑82265877 Fax: +886‑2‑82265717

The TB‑24R/24‑01 is a 24‑channel isolated relay output terminal board designed for industrial control, automation, and data acquisition systems. It provides reliable switching of AC or DC loads through high‑sensitivity SPDT miniature relays, with full channel isolation and LED status indication. The board interfaces directly with ADLINK’s digital I/O cards and Opto‑22‑compatible connectors, offering a robust, modular solution for field signal interfacing.

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### 2. Key Features

- 24 Independent Relay Output Channels: Each channel provides a single‑pole double‑throw (SPDT) contact configuration for flexible control of external loads.
- Isolated Outputs: Electrical isolation between control logic and field wiring enhances safety and noise immunity.
- High‑Sensitivity Miniature Relays: Rated for 1500 V FCC surge withstand, ensuring long‑term reliability in industrial environments.
- LED Status Indicators: 24 on‑board LEDs provide real‑time visual feedback of relay activation states.
- Opto‑22 Compatibility: Equipped with a 50‑pin Opto‑22‑style connector (CN6) for direct connection to ADLINK digital I/O cards such as ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, and PCI‑7296.
- Flexible Power Options: Available in 12 V DC (TB‑24R/12) and 24 V DC (TB‑24R/24) coil voltage variants.
- High Contact Ratings: Supports up to 250 VAC / 2 A or 220 V DC / 2 A switching, suitable for both AC and DC control applications.
- Compact Panel Design: 220 mm × 132 mm form factor with screw terminal blocks for secure field wiring.
- Field‑Replaceable Relays: Standard relay components (DSIE‑S‑DC24V) simplify maintenance and replacement.
- Industrial‑Grade Build: Designed for reliable operation in harsh electrical environments with surge protection and isolation.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Relay Type | High‑sensitivity miniature relay, 1500 V FCC surge withstand |
| Relay Form | SPDT (Single Pole Double Throw) |
| Number of Channels | 24 independent relay outputs |
| Contact Ratings | Max. switching power: 60 W / 125 VA<br>Max. switching voltage: 220 V DC / 250 V AC<br>Max. switching current: 2 A DC / AC<br>Max. carrying current: 3 A DC / AC |
| UL/CSA Ratings | 0.6 A @ 125 VAC, 0.6 A @ 110 V DC, 2 A @ 30 V DC |
| Coil Voltage | 24 V DC (TB‑24R/24 variant) |
| Coil Power Source | External +24 V DC via CN5 terminal |
| Isolation Voltage | 1500 V surge withstand between coil and contacts |
| Indicators | 24 LEDs (Green, Yellow, Red) for channel status |
| Connectors | CN1–CN4: Screw terminal blocks for field wiring<br>CN5: Power input (+24 V DC, GND)<br>CN6: 50‑pin Opto‑22 compatible connector |
| Terminal Type | 2 × 18 screw terminals (for 24 channels) |
| Dimensions | 220 mm × 132 mm |
| Weight | Approx. 0.6 kg (typical) |
| Material | FR‑4 PCB with protective coating, metal mounting panel |
| Operating Voltage Range | 24 V DC nominal (±10 %) |
| 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‑24R/24‑01 functions as an output interface board that converts digital control signals from a host I/O card into isolated relay contacts capable of switching external loads. Each relay channel operates independently, allowing simultaneous control of multiple devices such as solenoids, lamps, contactors, or small motors.

Operation Principle:
- The host digital I/O card sends logic‑level control signals through the 50‑pin connector (CN6).
- Each signal energizes the corresponding relay coil (24 V DC).
- The relay’s SPDT contacts switch between the normally open (NO) and normally closed (NC) terminals, controlling the external circuit.
- The LED indicator for each channel illuminates when the relay is energized, providing immediate visual confirmation.

Typical Applications:
- Industrial automation and process control
- Machine tool control panels
- PLC and SCADA system output expansion
- Signal isolation between control logic and high‑voltage loads
- Laboratory instrumentation and test benches
- Building automation (lighting, HVAC, alarm systems)

Compatibility:
- Fully compatible with ADLINK digital I/O cards (ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, PCI‑7296).
- Opto‑22‑style pinout ensures interoperability with third‑party I/O modules and DAQ systems.
- Can be integrated with NuDAQ, NuDAM, and other ADLINK modular systems.

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### 5. Components & Accessories

Included Components:
- TB‑24R/24‑01 relay output board
- 24 on‑board relays (DSIE‑S‑DC24V type)
- 24 LED indicators (channel status)
- Four terminal blocks (CN1–CN4) for field wiring
- Power input terminal (CN5)
- 50‑pin Opto‑22 compatible connector (CN6)

Optional Accessories:
- ACL‑10150‑1.5: 1.5 m 50‑pin flat cable (not included by default)
- Mounting hardware for panel or DIN‑rail installation (optional)
- Replacement relays (DSIE‑S‑DC24V)
- Protective enclosure or cover for field installation

Connector Details:
- CN1–CN4: Each provides terminals for six relay channels (CH0–CH23). Each channel has three terminals: Common (COM), Normally Closed (NC), and Normally Open (NO).
- CN5: Power input connector for +24 V DC and GND.
- CN6: 50‑pin Opto‑22 compatible header for control signal input from host I/O card.

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### 6. Installation & Setup

Requirements:
- External +24 V DC regulated power supply (for relay coils).
- Compatible digital output card with 50‑pin Opto‑22 connector.
- Proper grounding and shielding for industrial environments.

Mounting Options:
- Panel mounting via pre‑drilled holes on the PCB or mounting plate.
- DIN‑rail mounting available using optional DIN‑mount adapters.

Wiring & Configuration:
1. Power Connection: Connect +24 V DC to CN5 (+) and GND to CN5 (–).
2. Signal Connection: Attach the 50‑pin flat cable (ACL‑10150‑1.5) between CN6 and the host I/O card.
3. Load Wiring: Connect external devices to CN1–CN4 terminal blocks. Each channel provides COM, NO, and NC terminals.
4. Verification: Power on the system and verify LED indicators correspond to control signals.

Safety Notes:
- Ensure all wiring is performed with power off.
- Observe polarity and voltage ratings to prevent relay damage.
- Use appropriate fuses or circuit protection for connected loads.

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### 7. Performance & Capabilities

Switching Performance:
- Capable of switching both AC and DC loads up to 250 VAC / 2 A or 220 V DC / 2 A.
- Maximum carrying current of 3 A ensures reliable operation for moderate‑power devices.
- Contact resistance typically < 100 mΩ, ensuring low‑loss switching.

Response Time:
- Relay operate time: typically 10 ms
- Release time: typically 5 ms

Isolation & Protection:
- 1500 V surge withstand between coil and contact circuits.
- Optical and magnetic isolation between control logic and field wiring.
- LED indicators provide diagnostic feedback for each channel.

Efficiency & Reliability:
- Low coil power consumption due to high‑sensitivity relays.
- Long mechanical life (> 10⁷ operations typical).
- Electrical life dependent on load type (typically > 10⁵ operations at rated load).

Limitations:
- Not intended for high‑frequency switching or inductive loads without suppression.
- Requires external flyback diodes or snubbers for inductive load protection.
- Maximum ambient temperature limited to 50 °C for continuous operation.

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### 8. Standards & Compliance

Certifications & Ratings:
- UL/CSA contact ratings verified for safety compliance.
- Designed to meet FCC surge withstand standards (1500 V).
- Manufactured under ADLINK’s ISO‑certified quality management system.

Regulatory Compliance:
- CE‑compliant design for electromagnetic compatibility (EMC).
- RoHS‑compliant materials (lead‑free solder and components).
- Meets industrial safety and insulation standards for control equipment.

Industry Standards Supported:
- Opto‑22 50‑pin connector pinout standard.
- Compatible with ADLINK NuDAQ and NuDAM modular I/O systems.
- Conforms to general IEC relay performance classifications.

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### 9. Additional Information

Warranty:
- Duration: 1 year from confirmed date of purchase.
- Coverage: Free from defects in materials and workmanship under normal use.
- Remedy: Repair or replacement at ADLINK’s discretion upon written notice.
- Exclusions:
- Damage due to misuse, over‑specification operation, or unauthorized repair.
- Alteration of serial numbers or modification of circuitry.
- Consequential damages or losses are not covered.
- Return Policy: Equipment must be securely packaged, postage‑prepaid, and insured. Proof of purchase required for warranty service.

Maintenance:
- Periodically inspect terminal connections for tightness and corrosion.
- Replace relays showing signs of wear or contact degradation.
- Keep the board free from dust and moisture.

Technical Support & Updates:
- Firmware and documentation updates available via ADLINK’s website.
- Technical assistance provided through dedicated support channels (NuDAQ, NuDAM, etc.).
- Customer feedback and suggestions encouraged for continuous product improvement.

Service Philosophy:
ADLINK emphasizes customer satisfaction and continuous support. Users are encouraged to contact ADLINK with detailed information about their system environment (OS, CPU, chipset, I/O configuration) for prompt and accurate technical assistance.

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### Summary

The ADLINK TB‑24R/24‑01 is a robust, industrial‑grade 24‑channel relay output terminal board engineered for reliable control of AC and DC loads in automation and data acquisition systems. With its isolated SPDT relays, Opto‑22‑compatible interface, and comprehensive LED status indication, it provides a dependable link between low‑voltage control logic and high‑voltage field devices. Its modular design, compatibility with ADLINK’s NuDAQ and PCI I/O cards, and adherence to international safety standards make it a versatile choice for engineers and system integrators seeking a high‑performance, maintainable relay output solution.

Key Advantages:
- 24 isolated SPDT relay outputs with LED indication
- 24 V DC coil operation and 250 VAC / 2 A contact capacity
- Opto‑22‑compatible 50‑pin interface for seamless integration
- Compact 220 × 132 mm panel design with screw terminals
- UL/CSA‑rated, surge‑resistant, and CE‑compliant construction
- Backed by ADLINK’s one‑year warranty and global technical support

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End of Product Summary – TB‑24R/24‑01 Isolated 24 DO Relay Panel (230 VAC / 2 A)