H51Q-HS B5233-1 Microprocessor bus board

H51Q-HS B5233-1 is a synchronous microprocessor bus board (SMPB) under HIMA's H51q series, which is a key part of the HIMA PES (Process Equipment Safety) system family. It is specially developed for safety-critical scenarios in industrial automation and is known for its high redundancy and reliability. The following is its detailed information:

Core Hardware and Electrical Parameters

Parameter Category	Specific Details
Power Supply	The input voltage is 24V DC, and it has a built-in 5V DC power module. This module supplies power for the CPU, interface, and I/O modules, eliminating the need for separate wiring and simplifying the system's wiring layout.
Physical & Environmental Parameters	Its dimensions are 120mm×80mm×35mm. The operating temperature range is -20°C to 70°C, which enables it to operate stably in most industrial on-site temperature environments.
Communication Interface	It is equipped with Ethernet and RS485 communication interfaces. These interfaces allow it to carry out data interaction and communication with other devices in the industrial automation system smoothly, supporting the transmission and sharing of real-time control data.

Core Structural and Functional Advantages
- Quadruple Redundant CPU Design: It adopts a QMR (quadruple) CPU structure. Each microprocessor is placed on an independent MCU module, and the central control unit consists of two identical CU modules. This quadruple modular redundancy design can avoid system downtime caused by a single microprocessor failure, thus maximizing the non-faulty operation of the system and meeting the SIL 4 safety level requirements specified in the IEC 61508 standard.
- Diversified Safety Control Functions: The module is capable of supporting multiple key industrial safety functions, including emergency shutdown (ESD), safety instrumented systems (SIS), fire and gas systems (F&G), and burner management systems. It can monitor and control key links in industrial processes in real time to prevent safety accidents such as equipment failures and dangerous medium leaks.
- Excellent Stability and Maintainability: It uses advanced technology and materials, which endow it with good anti-interference ability and anti-aging performance, ensuring long-term stable operation in complex industrial electromagnetic environments. In addition, its modular design not only facilitates users to configure and expand according to actual application needs but also simplifies daily maintenance operations. Meanwhile, it can monitor the 5V DC output voltage of the central unit power module to ensure the stable operation of the entire system.