Comprehensive Product Summary – ADLINK TB‑24R/12‑01 Isolated 24‑Channel Relay Output Panel

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### 1. Product Overview

Product Name: TB‑24R/12‑01
Model: TB‑24R/12
Series: TB‑24P / TB‑24R / TB‑16P8R Terminal Board Series
Article Number: TB‑24R/12‑01
Manufacturer: ADLINK Technology Inc.
Product Type: Isolated 24‑Channel Relay Output Board (12 V Coil, 230 VAC/2 A)
Form Factor: Panel‑mount terminal board
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
- Address: 9F, No. 166, Jian Yi Road, Chungho City, Taipei 235, Taiwan, R.O.C.
- Tel: +886‑2‑82265877 Fax: +886‑2‑82265717

The TB‑24R/12‑01 is a high‑density relay output interface board designed for industrial automation, data acquisition, and control applications. It provides 24 isolated relay output channels, each with status indication LEDs, and supports single‑pole double‑throw (SPDT) switching. The board is part of ADLINK’s modular terminal board family, compatible with Opto‑22‑style 50‑pin connectors and a wide range of ADLINK digital I/O cards such as ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, and PCI‑7296.

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### 2. Key Features

- 24 Independent Relay Outputs:
Each channel is equipped with a miniature SPDT relay capable of switching both AC and DC loads.

- Electrical Isolation:
Provides galvanic isolation between control logic and field wiring, ensuring protection against voltage transients and ground loops.

- Status Indication:
Each output channel includes an LED indicator for real‑time monitoring of relay activation status.

- High‑Sensitivity Relays:
Utilizes 1500 V FCC surge‑withstand miniature relays for reliable operation in industrial environments.

- Flexible Coil Voltage Options:
Available in 12 V DC (TB‑24R/12) and 24 V DC (TB‑24R/24) variants to match system power requirements.

- Opto‑22 Compatible Interface:
Equipped with a 50‑pin ribbon connector (CN6) for direct connection to Opto‑22‑compatible digital I/O boards.

- Screw Terminal Connectivity:
Four terminal blocks (CN1–CN4) provide secure field wiring for external devices, each supporting multiple relay channels.

- Compact Panel Design:
Dimensions of 220 mm × 132 mm, suitable for control panels and rack‑mount integration.

- High Switching Capacity:
Supports up to 250 VAC / 2 A or 220 VDC / 2 A per channel, with a maximum switching power of 60 W / 125 VA.

- LED Color Coding:
Channels are grouped and color‑coded (green, yellow, red) for easy identification of port groups A, B, and C.

- Compatibility with ADLINK DAQ Systems:
Designed for seamless integration with ADLINK’s NuDAQ and NuDAM product lines.

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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 |
| Coil Voltage | 12 V DC (TB‑24R/12) |
| Contact Ratings | Max. switching power: 60 W / 125 VA |
| | Max. switching voltage: 220 V DC / 250 V AC |
| | Max. switching current: 2 A DC / 2 A AC |
| | Max. carrying current: 3 A DC / 3 A AC |
| UL/CSA Ratings | 0.6 A @ 125 VAC, 0.6 A @ 110 VDC, 2 A @ 30 VDC |
| Isolation Voltage | 1500 V surge withstand between coil and contact |
| Indication Display | 24 LEDs (one per channel) |
| Power Supply Input | +12 V DC nominal (via CN5) |
| Connectors | CN1–CN4: Screw terminals for field wiring; CN5: Power input; CN6: 50‑pin Opto‑22 connector |
| Terminal Type | 2 × 18 screw terminal blocks |
| Dimensions | 220 mm (L) × 132 mm (W) |
| Weight | Approx. 0.5 kg (typical) |
| Operating Temperature | 0 °C – 50 °C (typical industrial range) |
| Storage Temperature | –20 °C – 70 °C |
| Humidity | 10 % – 90 % RH, non‑condensing |
| Mounting | Panel or enclosure mounting |
| Cable Compatibility | 50‑pin flat cable (e.g., ACL‑10150‑1.5, 1.5 m length) |

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### 4. Functionality

The TB‑24R/12‑01 functions as a relay output expansion interface for digital I/O control systems. Each relay channel acts as an electrically isolated switch, controlled by logic signals from a host DAQ or digital output card. The board translates low‑voltage logic control signals into high‑voltage, high‑current switching suitable for actuating external devices such as solenoids, lamps, contactors, or alarms.

Operation Principle:
- The host controller sends digital output signals through the 50‑pin connector (CN6).
- Each signal energizes the corresponding relay coil (12 V DC).
- The relay contacts toggle between Normally Open (NO) and Normally Closed (NC) positions.
- The LED indicator for that channel illuminates when the relay is energized (“Logic 1”).

Typical Applications:
- Industrial automation and process control
- Machine tool control panels
- PLC and DAQ system output expansion
- Signal switching and load control
- Laboratory instrumentation and test benches
- Building automation (HVAC, lighting, alarms)

Compatibility:
- Fully compatible with Opto‑22‑style 50‑pin digital I/O interfaces.
- Works with ADLINK boards such as ACL‑7122, ACL‑7124, PET‑48DIO, PCI‑7248, PCI‑7296, and similar devices.
- Can be integrated into NuDAQ and NuDAM modular systems.

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### 5. Components & Accessories

Included Components:
- TB‑24R/12‑01 relay output board
- Four screw terminal blocks (CN1–CN4)
- Power input connector (CN5)
- Opto‑22‑compatible 50‑pin header (CN6)
- On‑board 24‑channel LED indicators

Optional Accessories:
- ACL‑10150‑1.5 50‑pin flat ribbon cable (1.5 m)
- DIN‑rail or panel mounting hardware
- External 12 V DC regulated power supply
- Protective enclosure or wiring harness

Connector Details:
- CN1–CN4: Field wiring terminals for relay outputs. Each channel provides three terminals: Common (COM), Normally Closed (NC), and Normally Open (NO).
- CN5: Power input terminal for +12 V DC and GND.
- CN6: 50‑pin Opto‑22‑compatible connector for digital I/O interface.

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### 6. Installation & Setup

Power Requirements:
- Supply voltage: +12 V DC (regulated)
- Power consumption: Determined by relay coil current (approx. 30 mA per relay when energized)

Mounting Options:
- Panel mounting using screws or standoffs
- Integration into control cabinets or relay racks

Wiring Guidelines:
1. Connect the +12 V DC power source to CN5 (observe polarity).
2. Connect external loads to CN1–CN4 according to channel mapping.
- Each channel has COM, NC, and NO terminals.
3. Connect the 50‑pin ribbon cable from the host I/O card to CN6.
4. Verify LED indicators for correct channel operation.
5. Ensure all wiring complies with voltage and current ratings.

Configuration:
- No software configuration required; the board operates as a passive relay interface.
- Logic mapping corresponds directly to the host I/O card’s port assignments (Port A, B, C).

Safety Notes:
- Disconnect power before wiring or maintenance.
- Observe isolation limits and avoid exceeding rated voltages.
- Use appropriate fuses or circuit protection for high‑voltage loads.

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### 7. Performance & Capabilities

Switching Performance:
- Supports both AC and DC load switching up to 250 VAC or 220 VDC.
- Maximum switching current: 2 A per channel.
- Maximum continuous carrying current: 3 A.

Response Time:
- Typical relay operate/release time: 10–15 ms (mechanical relay dependent).

Isolation & Protection:
- 1500 V surge withstand between coil and contact.
- Electrical isolation between control logic and field wiring prevents interference and ground faults.

LED Indication Logic:
- Logic “1” → Relay energized → LED ON
- Logic “0” → Relay de‑energized → LED OFF

Channel Grouping:
- Port A (CH0–CH7): Green LEDs
- Port B (CH8–CH15): Yellow LEDs
- Port C (CH16–CH23): Red LEDs

Limitations:
- Mechanical relay lifetime subject to contact wear (typically 10⁵–10⁶ operations under rated load).
- Not suitable for high‑frequency switching applications.
- Requires external suppression for inductive loads (e.g., flyback diodes or RC snubbers).

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### 8. Standards & Compliance

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

Regulatory Compliance:
- CE‑compliant design principles for electromagnetic compatibility (EMC).
- RoHS‑compliant materials (lead‑free solder and components).

Industry Standards:
- Opto‑22 50‑pin connector pinout standard.
- Compatible with IEEE and IEC industrial control wiring conventions.

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### 9. Additional Information

Warranty:
- Standard Warranty Period: 1 year from date of purchase.
- Coverage: Free from defects in materials and workmanship.
- Remedy: Repair or replacement at ADLINK’s discretion upon written notice.
- Exclusions:
- Damage due to misuse, over‑specification operation, or unauthorized repair.
- Altered serial numbers or modified hardware.
- Consequential damages are not covered.
- Return Policy:
- Equipment must be securely packaged and shipped prepaid.
- Proof of purchase required for warranty service.

Maintenance:
- Periodically inspect terminal connections for corrosion or looseness.
- Keep board free from dust and moisture.
- Replace relays only with equivalent rated components (DSIE‑S‑DC12V type).

Technical Support & Updates:
- Firmware not applicable (hardware‑only device).
- Updated manuals and compatibility lists available on ADLINK’s website.
- Technical inquiries can be directed to nudaq@adlink.com.tw.

Service Commitment:
ADLINK emphasizes customer satisfaction and provides responsive technical assistance for installation, troubleshooting, and product integration. Users are encouraged to provide detailed system information (OS, motherboard, CPU, chipset, I/O configuration) when requesting support to ensure prompt resolution.

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### Summary

The ADLINK TB‑24R/12‑01 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 12 V DC coil operation, SPDT relay contacts, and Opto‑22‑compatible interfacing, it bridges low‑voltage digital control signals with high‑voltage field devices. Its LED status indicators, screw‑terminal connectivity, and compact 220 × 132 mm form factor make it ideal for integration into control panels, PLC expansions, and laboratory setups. Designed and manufactured by ADLINK Technology Inc., the TB‑24R/12‑01 upholds industrial standards for isolation, safety, and performance, backed by a one‑year manufacturer warranty and comprehensive technical support.