Model A413140 is a Finland‑manufactured DCS digital input IO board developed by Metso Automation (Neles). Gold‑plated backplane connectors realize bus communication and power supply inside the control cabinet. Eight field wiring terminals connect on‑site limit switches and discrete sensors. Independent optocoupler chips deliver galvanic isolation per channel, blocking surge currents and ground loop interference to safeguard the central control system. On‑board passive filtering components reduce electromagnetic noise. The board is deployed in pulp & paper mills, marine automation cabins and process industry control cabinets to collect valve position feedback, equipment running status and discrete alarm signals for Metso distributed control systems.
