HIMA H51Q-HRS HIMax series Module System Safety modules

HIMA HIMax series H51Q-HRS module: a solid line of defense for industrial safety

In the field of industrial automation, the reliability of the safety system is crucial. As a world-renowned provider of safety automation solutions, HIMA's H51Q - HRS module in the HIMax series has become an ideal choice for many industrial scenarios with its excellent performance and high reliability.

I. Module Overview

H51Q - HRS belongs to HIMA's HIQuad series of products and is a safety system component with high availability. Among them, "HRS" stands for "High Redundancy and Self-monitoring", which is also the core feature of this module. It adopts a quadruple (QMR - Quadruple Modular Redundant) CPU structure. The system's central control unit contains four microprocessors, each of which is integrated on a CU (Central Unit) module, and the central control unit consists of two identical CU modules. This unique architectural design enables the system to operate stably in the face of various complex working conditions and potential failures, ensuring the safety and continuity of the production process.

II. Technical Features

(I) Redundant Design

Hardware redundancy: Each CU module forms a 1oo2d (One-out-of-Two-with-Diagnostic) structure, and two 1oo2d structures further form a 2oo4d (Two-out-of-Four-with-Diagnostic) structure. This means that even in a redundant architecture, if any component fails, the normal operation of the system will not be affected. For example, in petrochemical production, the reaction process cannot be interrupted. The redundant design of H51Q-HRS can effectively cope with equipment failures and ensure the continuous production.

Power supply redundancy: The 5V DC power supply is the energy required for the operation of the CPU, interface control and I/O modules, and is generated by the 24V DC/5V DC clock control power supply module model F 7130A. The sub-rack is equipped with two power supply modules, and the two power supply modules are in parallel working mode. When one of the power supply modules fails, the other module can seamlessly switch to continue to power the system to ensure the uninterrupted operation of the system.

(II) Self-monitoring and diagnosis

Dual CPU collaborative operation: Each CU module contains two CPUs, one CPU runs forward operation and the other runs reverse operation. The hardware comparator compares the operation results of the two in real time. Once the operation results are detected to be inconsistent, it is immediately judged as a fault state, triggering the relevant protection mechanism, such as setting the watchdog to a safe state, and promptly announcing the abnormal state of the processor. This design greatly improves the system's fault detection capability, and can detect and handle potential problems in the shortest time.

Comprehensive diagnostic function: The module has a power supply monitoring function for the 5V system voltage, and can monitor the 5V DC output voltage of the power module (for CPU, I/O and interface) in real time to check whether there is undervoltage or fault. At the same time, the module is also equipped with a diagnostic display and 2 LED lights to output system and I/O related information, so that operators can understand the system operation status in a timely manner. In addition, the module also has a periodic self-test function to ensure the normality of its own functions and improve the overall reliability of the system.

(III) Communication Capability

The H51Q-HRS module is equipped with 2 RS485 interfaces and has electrical isolation function. Its transmission rate can reach up to 57600bps, which can be set to 9600bps or 57600bps through the switch, or other transmission rates can be flexibly set through software (the rate set by software has a higher priority). This feature enables the module to easily communicate with other devices and achieve efficient data interaction in complex industrial network environments.