ABB DSTD 151 Digital Input Connection Unit

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1. Product Overview

The ABB DSTD 151 is an industrial-grade Digital Input Connection Unit designed for ABB PLC systems (such as AC500 and Advant). It is used in modular control architectures to connect digital input modules, enabling reliable data acquisition and signal transmission.

DSTD 151 ensures high stability and reliability of signal connections, making it suitable for various industrial automation environments.

2. Technical Specifications

• Model: DSTD 151

• Product Type: Digital Input Connection Unit

• Supported Module Types: Digital Input Modules

• Input Signal Type: 24 VDC digital signals

• Channels: Standard 16 channels (expandable)

• Interface: Backplane / bus connection

• Power Supply: 24 VDC

• Operating Temperature: –20°C to +60°C

• Storage Temperature: –40°C to +85°C

• Mounting: Rack / DIN rail

• Terminal Type: Industrial pluggable terminals

• Protection Class: IP20

• Applicable Systems: ABB AC500, Advant PLC systems

3. Features & Advantages

• High-reliability digital input connection for stable signal transmission

• Modular design for easy installation, replacement, and system expansion

• Industrial-grade durability: vibration and interference resistant

• Multi-channel design for monitoring multiple points simultaneously

• High compatibility with ABB AC500 and Advant PLC systems

• Easy maintenance with quick module replacement

4. Application Areas

• Factory automation and production line digital signal acquisition

• Motor and equipment status monitoring

• Packaging machinery and counting systems

• Industrial process control and parameter acquisition

• Water treatment and municipal automation

• Chemical, metallurgical, mining, and energy automation

• DCS systems and discrete control systems

5. Precautions

1. Ensure module compatibility with the control system before installation.

2. Disconnect power during wiring to prevent short circuits or misoperation.

3. Input signals must comply with module specifications (24 VDC).

4. Avoid installation in high-humidity, dusty, or high-interference environments; apply protective measures if necessary.

5. Regularly check terminals and module interfaces to ensure stable signal transmission.

6. Avoid overloading the connected modules to extend device lifespan.

The structure and details of the product：

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