Product Details

The XYCOM 81862-003N1806 is a discontinued rack-mounted 1806 series CNC I/O control board, designed for XYCOM 8000 series CNC control chassis. This variant is an upgraded revision of the 81862-003L1806, optimized for signal stability and contact compatibility while retaining the same mechanical size and backplane pin definition for direct replacement. It serves as the signal interface between the CNC main CPU board, field limit switches, proximity sensors, relay loads and machine safety interlock devices, responsible for digital input acquisition and digital output driving for CNC auxiliary control. The board integrates signal debounce circuits, surge protection and noise filtering circuits to suppress contact bounce and electromagnetic interference generated by spindle motors and inverters in the machining workshop, ensuring reliable transmission of discrete switching signals. It communicates with the master processor through the dedicated internal backplane bus, uploading real-time switch status and receiving control commands to manage lubrication pumps, cooling fans, door interlocks and other auxiliary machine functions. Users can adjust input polarity, output mode and station address via on-board DIP switches and jumpers to match different machine tool I/O allocation schemes. The front panel is equipped with LED status indicators for power supply, input signal, output action and fault alarm, which allows maintenance technicians to quickly check signal status, locate wiring faults and verify logic actions during commissioning and daily maintenance. The PCB adopts industrial-grade components and complete EMC surge suppression design, resisting vibration, dust and electromagnetic interference in harsh machining environments, supporting long-term stable continuous operation of machine tools. This legacy I/O control board is mainly supplied as spare replacement parts for existing XYCOM CNC machine tools. Users need to confirm backplane pin definition, I/O address mapping and host firmware compatibility before installation. A conformal coated version is optional for high humidity, dusty industrial machining sites. This model is widely used in CNC lathes, milling machines, machining centers and old CNC control system retrofit projects.

This CNC I/O control board adopts standard single-slot rack board structure. It draws power from the control system backplane. LED indicators display power status, signal activity and fault alarm for convenient on-site inspection. The operating temperature range is 0°C to 50°C, storage temperature ranges from -40°C to 85°C, relative humidity 5% to 95% non-condensing. It complies with industrial shock, vibration and EMC standards and has CE certifications. It supports I/O address and signal configuration backup for fast recovery after hardware replacement.

This XYCOM 81862-003N1806 I/O control board is widely applied in legacy CNC control racks and machining equipment upgrade projects. It provides reliable digital signal interaction between the CNC master controller and field discrete devices. As a reliable discontinued spare part, the XYCOM 81862-003N1806 retains original bus timing and signal compatibility, and effectively reduces the renovation cost of legacy CNC control system maintenance.