Description
ABB YPI-105C is a digital input circuit board launched by ABB for industrial automation control systems. Its core positioning is to provide on-site switch signal acquisition capabilities for AC500 series or Ovation DCS controllers. It is an embedded I/O module designed specifically for complex automation control systems and serves as a critical signal interface between on-site switch devices such as buttons, limit switches, relay contacts, and upper level controllers.
core positioning
High performance industrial grade digital input module that receives switch signals from field devices and converts them into data formats recognizable by the controller. It supports parallel processing of multiple digital inputs and seamlessly integrates with ABB control systems.

ABB ASEA BROWN BOVERI DIGITAL INPUT CIRCUIT BOARD YPI-105C
Core functions and parameters
In terms of digital input, it provides 16 or more digital input channels and supports parallel processing. Can connect various switch devices such as buttons, limit switches, proximity switches, relay contacts, etc. The input voltage range supports 24V DC or 48V DC, and the typical input current is a few milliamps. All channels have electrical isolation function, and the maximum isolation voltage between channels can reach 500V, effectively preventing signal crosstalk and equipment damage. The response time is less than 10 milliseconds, meeting the requirements of fast logic acquisition.
In terms of signal compatibility, it supports multiple input signal standards, both 24V DC and 48V DC can be adapted, and on-site wiring is flexible. Built in diagnostic function, real-time monitoring of each channel status, supporting detection of input signal faults including short circuits and open circuits, and fault information can be reported to the controller.
In terms of environmental adaptability, the working temperature range is from negative 20 degrees Celsius to positive 70 degrees Celsius, with a wide temperature range to choose from. Protection level IP20, supports DIN rail installation or rack mounted installation, suitable for deployment in control cabinets with limited space. Through a full set of EMC certifications, it meets electromagnetic compatibility and industrial standards, adapts to harsh industrial environments, and has good anti-interference capabilities.
In terms of communication and integration, as a local I/O, it is directly interconnected with the controller through a dedicated connector, without the need for additional communication protocol configuration. As a remote I/O, it can communicate with the controller through buses such as PROFIBUS DP. Modular design supports plug and play, making installation, maintenance, and replacement easy.
Application industry
In the power utility industry, the switch status collection and equipment interlocking of substations and distribution networks under the State Grid Southern Power Grid. In the petroleum and petrochemical industry, instrument switch signals are connected to the refineries and oil fields of PetroChina, Sinopec, and CNOOC. Monitoring the start stop status of crushing stations and belt conveyors in non-ferrous and ferrous metal mines in the mining and metallurgical industry. Collection of equipment status for production lines of large cement groups such as Conch China Resources in the cement and building materials industry. Process switch quantity collection in the paper industry, pulp mills, and paper mills. Pump station and conveyor belt control in the food and beverage industry, dairy beer and beverage factories. In the rail transit industry, monitoring of equipment within subway and light rail stations. In the municipal engineering industry, on-site signal collection for municipal pumping stations and water pipeline networks. On site equipment status monitoring for renewable energy industry, wind farms, and photovoltaic power plants. Intelligent manufacturing industry, integrated into production lines for high-precision switch signal acquisition and equipment interlocking control.
Usage scenario
Firstly, PLC system switch signal acquisition. Deploy YPI-105C in AC500 or Ovation DCS control cabinets to collect the status of more than 16 on-site buttons, limit switches, and selection switches at once. After logical operation by the controller, drive the actuator to replace traditional hard wiring and reduce wiring.
Secondly, process control equipment status monitoring. In refining equipment or cement production lines, YPI-105C collects motor operating status, valve opening and closing status, and alarm contact signals. It has a built-in wire breakage detection function to automatically identify sensor faults and report them, and cooperates with the controller to achieve equipment interlocking and fault alarm.
Thirdly, digital signal input for energy management. In the power generation and transmission control system, YPI-105C is connected to key switch quantities such as circuit breaker auxiliary contacts, isolation switch status, and grounding knife switch position, providing real-time equipment status data for the SCADA system.
Fourth, remote I/O expansion. In unmanned pump rooms or distribution rooms, YPI-105C is deployed as a remote I/O node in the on-site operation box, and multiple switch signals are transmitted back to the central control room controller through the PROFIBUS DP bus, replacing a large number of point-to-point hard wiring.
Fifth, equipment interlocking and safety protection. At the mining crushing station or cement mill site, YPI-105C collects safety signals such as emergency stop buttons, safety threshold positions, and belt deviation switches to achieve multiple safety interlocks. Any channel trigger immediately cuts off the drive, ensuring the safety of personnel and equipment.
Sixth, integration of intelligent manufacturing production lines. In the automated production line, YPI-105C is integrated into the control cabinet, collecting signals from cylinder position sensors, material detection photoelectric switches, operation panel selection switches, etc., and cooperating with PLC to achieve sequential control and status monitoring.
one-sentence summary
ABB YPI-105C is a 16 channel digital input circuit board designed by ABB for AC500 and Ovation DCS systems. It features inter channel isolation, wire breakage detection, fast response, and multi voltage compatibility as its core. It supports parallel acquisition of 24V/48V DC switch signals and is widely used in industries such as power utilities, petroleum and petrochemical, mining and metallurgy, cement and building materials, papermaking, rail transit, municipal water management, and intelligent manufacturing. It covers core scenarios such as PLC switch acquisition, process equipment monitoring, energy management, remote I/O expansion, safety interlocking, and production line integration.


