HIMA H51q-HRS B5233-2 997205233 System Rack Module

The HIMA H51q-HRS B5233-2 997205233 is a system rack module designed for the H51q series safety controllers. This 19-inch rack provides the mechanical and electrical backbone for building high-availability safety systems certified for SIL 3 applications according to IEC 61508. The module supports redundant configurations and accommodates all necessary components for safety-critical process automation.

Physical Specifications

• Form Factor: 19-inch standard rack mounting

• Height: 5U (approximately 132 mm)

• Depth: 350 mm

• Width: 482.6 mm

• Weight: 8.5 kg (fully configured)

• Construction: Robust steel chassis with EMC shielding

System Architecture

The H51q-HRS B5233-2 rack is designed to host the complete safety system infrastructure. It accommodates power supply modules, central processing units, and I/O modules in a structured layout. The backplane incorporates high-speed communication buses that enable deterministic data exchange between components. This architecture supports both single and redundant configurations, allowing system designers to select the appropriate level of availability for their application.

Power Supply Configuration

The rack supports multiple F7126 power supply modules that convert 24 V DC input to the 5 V DC required for system operation. These power supplies feature:

• Input to output isolation for safety separation

• Overvoltage and overcurrent protection

• Short-circuit protection on output

• Redundant operation with load sharing

• Output voltage adjustment capability

An F7131 power monitoring module provides continuous supervision of the power supply status, with LED indicators for each monitored supply. This module also incorporates a battery-backed memory for maintaining system parameters during power interruptions.

Central Processing Unit Support

The rack is designed to accommodate redundant central processing modules, such as the F8650X, in dedicated slots. Each CPU module incorporates dual microprocessors operating in a 1oo2 architecture. One processor handles actual data and program execution while the other processes inverted data, with a hardware comparator continuously verifying consistency between the two processing streams. This design ensures the highest level of fault detection and system integrity.

I/O Expansion Capabilities

The H51q-HRS B5233-2 supports up to 14 standard I/O modules in addition to the power and CPU modules. This modular approach allows system integrators to customize I/O configurations based on application requirements. The rack supports digital input modules, digital output modules, analog input modules, and specialized safety function modules from the HIMA F-series product line.

Cooling and Thermal Management

Integrated fan modules provide forced air cooling to maintain optimal operating temperatures within the rack. The fan system includes monitoring capabilities that alert the controller to any reduction in cooling performance. This ensures that the system can respond appropriately to thermal events before they affect system operation.

Applications

The HIMA H51q-HRS B5233-2 system rack is deployed in safety-critical applications across multiple industries:

• Oil and gas production facilities

• Chemical processing plants

• Power generation stations

• Pharmaceutical manufacturing

• Railway signaling systems

• Offshore platforms

Certifications and Standards Compliance

The H51q-HRS B5233-2 is designed for integration into systems certified to IEC 61508 for SIL 3 applications. The rack assembly complies with applicable standards for industrial control equipment, including electromagnetic compatibility requirements. All materials used in construction are selected to meet the demands of continuous industrial operation in challenging environments.