Comprehensive Product Summary: ADLINK DIN-24R/12-01 Isolated 24 DO Relay (12V) DIN Rail Board (230VAC/2A)

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### 1. Product Overview

Product Name: DIN-24R/12-01
Model: DIN-24R/12
Series: DIN-24R / DIN-24P / DIN-24G Terminal Board Series
Article Number: DIN-24R/12-01
Manufacturer: ADLINK Technology Inc.
Product Type: 24-channel isolated relay output DIN-rail terminal board
Revision: Manual Rev. 2.30 (April 12, 2000)
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)

The ADLINK DIN-24R/12-01 is a high-density, isolated 24-channel relay output board designed for DIN-rail mounting. It provides robust electrical isolation, reliable switching performance, and compatibility with a wide range of digital I/O interface cards and systems. The board is part of ADLINK’s DIN-series terminal boards, which include models for digital input (DIN-24P), relay output (DIN-24R), and modular I/O expansion (DIN-24G).

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### 2. Key Features

- 24 Isolated Relay Outputs: Provides 24 independent relay output channels for controlling external devices.
- Relay Type: High-sensitivity miniature SPDT (Single Pole Double Throw) relays with 1500V surge withstand capability.
- Electrical Isolation: Each channel is isolated to prevent interference and protect control systems from voltage spikes.
- LED Status Indicators: 24 on-board LEDs provide real-time visual indication of relay output status.
- DIN-Rail Mounting: Compact form factor (205 × 114 mm) designed for standard DIN-rail installation in control cabinets.
- Flexible Power Options: Supports +12V DC coil voltage (DIN-24R/12) or +24V DC coil voltage (DIN-24R/24).
- High Switching Capacity: Supports up to 250VAC/2A or 220VDC/2A switching, suitable for industrial control loads.
- Multiple Connectivity Options:
- 50-pin Opto-22 compatible connector for direct interface with ADLINK and third-party I/O cards.
- 50-pin SCSI connector for connection to digital output boards such as ND-6058.
- Dual terminal blocks (J1, J2) for field wiring to external devices.
- Status LED Color Coding: Red, yellow, and green LEDs indicate channel grouping and operational status.
- Compatibility: Works with ADLINK ACL-7122, ACL-7124, PET-48DIO, PCI-7248/96, and other Opto-22 compatible digital I/O boards.
- Industrial Reliability: Designed for long-term operation in industrial automation, process control, and data acquisition systems.

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### 3. Technical Specifications

General Specifications:
- Number of Channels: 24 relay output channels
- Relay Form: SPDT (Single Pole Double Throw)
- Relay Type: High-sensitive miniature relay, surge withstand 110V DC / 125VAC
- Isolation Voltage: 1500V FCC surge withstand
- Coil Voltage: 12V DC (DIN-24R/12)
- Contact Ratings:
- Max. Switching Power: 60W (DC) / 125VA (AC)
- Max. Switching Voltage: 220V DC / 250V AC
- Max. Switching Current: 2A (DC or AC)
- Max. Carrying Current: 3A (DC or AC)
- UL/CSA Ratings:
- 0.6A @ 125V AC
- 0.6A @ 110V DC
- 2A @ 30V DC

Electrical Characteristics:
- Input Power: +12V DC nominal (for relay coil operation)
- Power Connector: CN9 terminal block (GND, +12V)
- LED Indicators: 24 LEDs (Red, Yellow, Green) for channel status
- Isolation: Channel-to-channel and channel-to-system isolation

Mechanical Specifications:
- Dimensions: 205 mm (L) × 114 mm (W)
- Mounting: DIN-rail compatible
- Connectors:
- J1, J2: Terminal blocks for relay outputs
- CN6: 50-pin Opto-22 compatible connector
- CN7: 50-pin SCSI connector for digital I/O interface
- CN9: Power input connector (+12V DC)
- Weight: Approx. 400–500 g (depending on configuration)
- Material: Industrial-grade PCB with protective coating and terminal block connectors

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### 4. Functionality

The DIN-24R/12-01 functions as a relay output expansion board for digital I/O systems. Each of the 24 channels operates an SPDT relay that can switch AC or DC loads. The board receives digital output signals from a host controller or DAQ card through either the Opto-22 compatible 50-pin connector or the 50-pin SCSI interface.

Operation Principle:
- When a digital output signal is asserted (logic “1”), the corresponding relay coil is energized, closing the normally open (NO) contact and opening the normally closed (NC) contact.
- When the signal is deasserted (logic “0”), the relay returns to its default state (NO open, NC closed).
- Each relay’s state is indicated by an LED on the board, allowing quick visual verification.

Use Cases and Applications:
- Industrial automation and process control
- PLC and SCADA system output expansion
- Machine control and equipment interlocking
- Signal switching and load control in test systems
- Remote device actuation and alarm triggering
- Integration with ADLINK NuDAQ, NuDAM, and PCI digital I/O cards

Compatibility:
- Compatible with ADLINK ACL-7122, ACL-7124, PET-48DIO, PCI-7248, PCI-7296, and ND-6058 boards.
- Supports Opto-22 standard pinout for universal connectivity.

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### 5. Components & Accessories

Included Components:
- DIN-24R/12-01 relay output board
- Integrated terminal blocks (J1, J2) for field wiring
- CN6 50-pin Opto-22 compatible connector
- CN7 50-pin SCSI connector
- CN9 power input terminal (+12V DC)
- 24 status LEDs (color-coded by channel group)

Optional Accessories:
- 50-pin flat ribbon cable for connection to DAQ or DIO cards
- 50-pin SCSI cable for ND-6058 or similar interface boards
- DIN-rail mounting clips and hardware
- Protective enclosure or panel mount kit

Connector Details:
- J1/J2 Terminal Blocks: Each channel provides three terminals — Common (COM), Normally Closed (NC), and Normally Open (NO).
- CN6 (Opto-22 Connector): Standard 50-pin header for digital output interface.
- CN7 (SCSI Connector): 50-pin SCSI interface for direct connection to digital I/O boards.
- CN9 (Power Input): Two-pin terminal block for +12V DC and GND.

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### 6. Installation & Setup

Installation Requirements:
- Standard DIN-rail mounting (35 mm rail)
- +12V DC regulated power supply
- Compatible digital output interface (Opto-22 or SCSI type)
- Proper grounding and shielding for industrial environments

Mounting Procedure:
1. Attach the DIN-24R/12-01 securely to a DIN rail in the control cabinet.
2. Connect the +12V DC power supply to CN9 (observe polarity).
3. Connect the digital output interface cable to CN6 (Opto-22) or CN7 (SCSI).
4. Wire external devices to J1 and J2 terminal blocks according to channel mapping.
5. Verify LED indicators for correct operation.

Configuration:
- No software configuration required; relay activation is controlled by digital output signals from the host system.
- Ensure correct voltage selection (12V DC for DIN-24R/12).
- Observe relay contact ratings to prevent overload.

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### 7. Performance & Capabilities

Switching Performance:
- Supports both AC and DC load switching.
- Fast relay response suitable for control and automation tasks.
- High isolation ensures minimal crosstalk and interference.

Capacity & Efficiency:
- Each relay channel can handle up to 2A at 250VAC or 220VDC.
- Total board current capacity limited by power supply and thermal constraints.
- Efficient coil design minimizes power consumption and heat generation.

Limitations:
- Not intended for high-frequency switching or inductive loads without suppression.
- Requires external protection (fuses or snubbers) for high-energy loads.
- Relay life expectancy depends on load type and switching frequency.

Reliability:
- Industrial-grade relays rated for extended operational life.
- LED indicators provide immediate fault detection and status monitoring.
- Designed for continuous operation in harsh industrial environments.

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### 8. Standards & Compliance

Certifications and Compliance:
- UL/CSA rated relay components
- FCC surge withstand compliance (1500V)
- Isolation voltage: 1500V DC (relay coil to contact)
- Designed to meet industrial EMC and safety standards

Industry Standards:
- Opto-22 compatible pinout for universal digital I/O interfacing
- DIN-rail mounting standard (EN 60715)
- Compliant with ADLINK NuDAQ and NuDAM system architecture

Environmental Conditions:
- Operating Temperature: 0°C to 50°C (typical)
- Storage Temperature: -20°C to 70°C
- Humidity: 10–90% RH, non-condensing

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### 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 operation beyond specifications.
- Warranty service requires proof of purchase and return of the product prepaid.

Support & Service:
- Sales & Service: service@adlink.com.tw
- Technical Support: nudaq@adlink.com.tw
- Software Support: sw@adlink.com.tw
- Telephone: +886-2-82265877
- Fax: +886-2-82265717

Maintenance:
- Periodically inspect terminal connections for tightness and corrosion.
- Ensure adequate ventilation and avoid exposure to excessive dust or moisture.
- Replace relays only with equivalent rated components (DSIE-S-DC12V).

Firmware/Hardware Updates:
- The DIN-24R/12-01 is a hardware-only device; no firmware updates are required.
- ADLINK may release updated versions or revisions to improve reliability and performance.

Product Family Overview:
- DIN-24P: 24-channel opto-isolated digital input board.
- DIN-24R: 24-channel relay output board (this model).
- DIN-24G: 24-position I/O module rack for modular expansion.

Typical Integration Example:
- Connect DIN-24R/12-01 to an ADLINK PCI-7248 digital output card via a 50-pin SCSI cable.
- Mount the board on a DIN rail inside a control cabinet.
- Wire external actuators, solenoids, or indicator lamps to the relay outputs.
- Use the host PC or PLC to control outputs through the DAQ card.

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### Summary

The ADLINK DIN-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 its DIN-rail form factor, isolated SPDT relays, and compatibility with Opto-22 and SCSI interfaces, it provides a flexible and efficient solution for expanding digital output capabilities. The board’s high isolation, LED diagnostics, and durable construction make it ideal for demanding industrial environments where reliability and safety are paramount.

Key Advantages:
- 24 isolated relay outputs with LED indication
- 12V DC coil operation with 2A switching capacity
- Opto-22 and SCSI interface compatibility
- Compact DIN-rail design for easy integration
- UL/CSA rated components ensuring safety and reliability

Ideal Applications:
- Industrial automation and process control
- Machine interfacing and equipment control
- Data acquisition and test systems
- PLC output expansion and signal switching

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End of Product Summary – ADLINK DIN-24R/12-01