The ABB CHBX01L (2VAA008574R1) is a compact horizontal left - side bus extender designed for the Symphony Plus HN800 I/O system, serving as a critical interface for horizontal bus expansion and 24VDC power integration of HN800 devices. It enables seamless signal transmission and power distribution between HN800 controllers, I/O modules and field instruments, supporting left - side horizontal row extension of the HN800 device chain. The module adopts a compact and rugged industrial design, with a width of 30mm, depth of 48mm and height of 127mm, weighing only 0.094kg, which can save rack space and facilitate system layout. It supports 24VDC power input, with over - voltage and over - current protection, ensuring stable power supply for extended modules. With a wide operating temperature range of - 25°C to +70°C and IP20 front protection, it can operate stably in harsh industrial environments with strong vibration and electromagnetic interference, and is fully compatible with ABB Symphony Plus automation systems, providing a reliable bus expansion solution for industrial process control and automation applications.

The CHBX01L 2VAA008574R1 is specifically designed for horizontal left - side expansion of the HN800 I/O system, enabling the connection of multiple HN800 modules in a horizontal row to expand the system's I/O capacity and communication range. It supports 24VDC power input with a maximum output current of 2A, which can provide stable power for the extended HN800 modules and ensure the normal operation of the system. The module has a low signal transmission delay of less than 0.1ms, ensuring real - time data exchange between the controller and the I/O modules. It adopts a gold - plated contact design to reduce contact resistance and signal attenuation, and has electrical isolation to prevent electromagnetic interference and ensure data transmission integrity. It is fully compatible with ABB Symphony Plus control systems, and can seamlessly integrate with HN800 controllers, I/O modules and other equipment to realize efficient data transmission and system control.

The CHBX01L 2VAA008574R1 adopts an industrial - grade rugged design, with a metal alloy housing that can withstand industrial vibration (5-50Hz, IEC 60068-2-6) and shock (IEC 60068-2-27) impact, preventing physical damage from on - site mechanical stress. It incorporates multi - level EMC protection, including surge suppressors and EMI filters, to resist electromagnetic interference from industrial equipment such as frequency converters and high - voltage motors. The module supports a wide voltage power supply of 24VDC ±15% and a wide operating temperature range of - 25°C to +70°C, allowing it to operate stably in extreme environmental conditions with fluctuating temperatures and unstable power grids. Its IP20 front protection prevents dust and debris from entering, ensuring long - term reliability in industrial settings.