The ADV151 series digital input module is a high-performance I/O module developed by Yokogawa for distributed control systems (DCS). It can seamlessly adapt to ESB bus node units (ANB10S, ANB10D, etc.), optical ESB bus node units (ANB11S, ANB11D, etc.), and field control units (AFV30S, AFV40D, etc.). Its core function is to convert the 24V DC ON/OFF switch signals output by field devices (such as sensors, travel switches, buttons, etc.) into digital signals recognizable by the control system, achieving real-time monitoring and data uploading of the operating status of field devices. The module adopts a highly reliable isolation design and compact structure, with excellent anti-interference ability and environmental adaptability. It can work stably in harsh industrial environments and is one of the key components to ensure precise control of automation systems.
Module Core Overview
The ADV151 series digital input module is a high-performance I/O module developed by Yokogawa for distributed control systems (DCS). It can seamlessly adapt to ESB bus node units (ANB10S, ANB10D, etc.), optical ESB bus node units (ANB11S, ANB11D, etc.), and field control units (AFV30S, AFV40D, etc.). Its core function is to convert the 24V DC ON/OFF switch signals output by field devices (such as sensors, travel switches, buttons, etc.) into digital signals recognizable by the control system, achieving real-time monitoring and data uploading of the operating status of field devices. The module adopts a highly reliable isolation design and compact structure, with excellent anti-interference ability and environmental adaptability. It can work stably in harsh industrial environments and is one of the key components to ensure precise control of automation systems.
This series of modules includes multiple sub models, such as ADV151-P50, ADV151-P10, ADV151-E63, etc. Different models have differences in adapting to bus unit types and specific functional details (for example, the ADV151-E series cannot be installed on ER bus node units). When selecting, it is necessary to confirm the control system architecture and on-site requirements.
Key technical parameters
The technical parameters of the ADV151 series module have been strictly optimized to ensure the accuracy and stability of signal acquisition. The core parameters are as follows:
1. Input channel specifications: Standard configuration includes 32 independent input channels, with 16 channels designed as a common ground group. All 24V DC voltage signals connected must ensure consistent polarity to avoid signal conflicts.
2. Voltage and current parameters: The rated input voltage is 24V DC, supporting two input modes: source/drain; The input ON voltage range is 18~26.4V DC, and the input OFF voltage is ≤ 5.0V DC, ensuring accurate recognition of on-site signals; The input current of each channel at rated input voltage is 4.1mA ± 20%, and the maximum current consumption of the module is 500mA (5V DC), with excellent power consumption control.
3. Voltage resistance and insulation performance: The voltage resistance level between the input signal and the system is 2kV AC (for 1 minute), and the voltage resistance level between groups (every 16 channels) is 500V AC (for 1 minute). If a dedicated cable (such as AKB331) is used for connection, the voltage resistance level between the input signal and the system is 500V AC, effectively preventing damage to the module caused by strong electrical interference in industrial sites.
4. Response and action performance: The response time in state input mode is ≤ 8ms, and it can quickly capture changes in on-site signals; Support button input function, with a minimum ON detection time of 20ms and a maximum ON/OFF cycle frequency of 25Hz, which can meet the acquisition requirements of high-frequency button signals.
5. Physical and connection parameters: Adopting pressure clamping terminal connection method, the wiring is convenient and the contact is firm, and it also supports dedicated cable (AKB331) and MIL connector cable connection; The module has compact dimensions (specifically 107.5mm × 32.8mm × 130mm, in millimeters) and weighs only 0.3kg, making it easy to install and deploy in control cabinets with limited space.
Applicable scenarios and core advantages
1. Typical application scenarios
This module is widely used in various industrial automation control scenarios, with core applications including:
-Factory automation production line: used to collect conveyor belt start stop status, mechanical arm limit signals, process switch button signals, etc., providing data support for the linkage control of the production line.
-Energy management system: Monitor the switch status of power equipment (such as transformers and distribution cabinets), the operating signals of photovoltaic/wind power equipment, and achieve real-time monitoring of energy production and distribution.
-In the field of process industry, in industries such as petrochemicals, metallurgy, and building materials, collecting valve switch status, pump operation signals, temperature/pressure sensor alarm contact signals, etc., ensures the stability and safety of the production process.
-Intelligent buildings and infrastructure: used for monitoring the operation status of elevators, collecting start stop signals for air conditioning systems, detecting triggering signals for fire protection facilities, etc., to enhance the intelligence level of building management.
2. Core advantages
-High reliability: adopting industrial grade protection design, strong anti electromagnetic interference ability, able to adapt to harsh industrial environments such as high temperature, high dust, vibration, etc., with a long average fault free operation time.
-Flexible adaptation: supports dual redundancy configuration, which can enhance the fault tolerance of the system; Compatible with multiple bus node units and field control units, with wide adaptability and easy integration into existing control systems.
-Convenient operation and maintenance: The pressure clamping terminal wiring method simplifies the installation and post maintenance process, provides intuitive module status, and facilitates troubleshooting; The compact structural design saves control cabinet space and reduces system deployment costs.
Key points for installation and debugging
Proper installation and debugging are key to ensuring the stable operation of the module, and the following specifications must be strictly followed:
1. Preparation before installation
-Technical document verification: Confirm the compatibility between the module model and the control system, check the installation drawings and wiring diagrams, clarify the installation position, signal link, and power parameters of the module.
-Environment and tool preparation: The installation site must meet the requirements of temperature 5-35 ℃, humidity ≤ 85% RH, and vibration ≤ 5mm/s; Prepare tools such as torque wrenches, multimeters, and insulation resistance meters, as well as compatible cables, terminal blocks, sealing materials, etc.
-Module appearance inspection: Check that the module housing is not deformed or damaged, the wiring terminals are not loose or oxidized, the markings are clear, and confirm that there is no damage during transportation.
2. Installation Implementation Standards
-Fixed installation: Install the module on a flat and sturdy installation base plate or bracket, use a level to ensure that the installation surface is level, and tighten it evenly diagonally with bolts to avoid deformation of the shell due to over tightening; The module and surrounding devices need to reserve sufficient heat dissipation space to avoid direct contact with strong heat sources.
-Wiring operation: Before wiring, the system power must be disconnected to prevent electric shock or module damage; The signal line and power line need to be laid in separate slots with a spacing of ≥ 150mm to avoid electromagnetic interference; Connect 24V DC signal according to polarity requirements, strip the insulation layer of the wire core to an appropriate length (recommended ≤ 3mm), insert the pressure clamping terminal and firmly crimp it to ensure good contact; Shielded cables require single ended grounding (grounding resistance ≤ 1 Ω) to enhance anti-interference capability.
-Power configuration: Confirm that the connected power supply voltage meets the module requirements (5V DC), and that the positive and negative poles of the power supply are connected correctly to avoid module burnout caused by reverse connection.
3. Debugging and verification process
-Pre power on inspection: Use a multimeter to check the power supply voltage, wiring polarity, and circuit continuity, and confirm that there are no short circuits, virtual connections, or other issues; Check that the communication link connection between the module, bus unit, and upper computer is normal.
-Functional testing: After power on, the signal acquisition function of each channel is tested by triggering switch signals or analog signal sources on site to confirm that the module can accurately identify the ON/OFF status and upload it to the upper computer; Verify whether the response time meets the on-site requirements and whether the high-frequency signal acquisition is stable without loss.
-Joint debugging verification: Conduct joint debugging with the control system to test the stability and accuracy of signal transmission. When triggering interlocking conditions, verify whether the module signal can accurately drive subsequent control logic (such as alarm output, equipment start stop).
-Record archiving: During the debugging process, detailed records of module numbers, test data, abnormal phenomena, and handling plans are kept, and debugging reports are generated and archived to provide a basis for later maintenance.





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