HIMA B5231

B5231 is a 19-inch 5U standard safety control system rack kit of the German HIMA (Black Horse) H51q-MS system. It belongs to the SIL3 level highly available safety control platform and is suitable for medium and large SIS systems. It is the wide-body version of B5230 (9 inches). 

Basic Information

Model: B5231 (H51q-MS, Standard Type)

Brand / Series: HIMA / H51q (QMR Quadruple Architecture)

Type: System Rack Assembly Kit (19-inch Standard Size)

Safety Level: SIL3, Cat.4, PL e (TÜV Certified, IEC 61508)

Position: Standard rack of H51q series, 19-inch width, suitable for conventional cabinet scenarios

Compatible Models: B5230 (9-inch Narrow Body, Compact Version with the Same Function), B4237-2 (H41q Old System Rack)

Rack body

Specification: 19-inch standard size, 5U height (approximately 222mm) × depth 248mm

Structure: Integrated cable trough, cooling fan assembly, dedicated redundant busbar

Installation: 19-inch standard cabinet fixation (industrial universal)

Weight: Approximately 5.5kg (standard weight, suitable for regular load-bearing cabinets)

Standard core configuration (redundant architecture)

1 × 19-inch 5U rack: including cooling fan assembly and redundant busbar

2 × F8650A: redundant CPU module (QMR quadruplexed, dedicated to H51q)

2 × F7130A: redundant power module (24VDC wide voltage, no single point failure)

I/O capacity: Up to 13 I/O modules (standard type, suitable for medium and large-scale systems)

Diagnostic module: Integrated fan and power failure monitoring, supports online alarms

Core parameters

Operating voltage: 24VDC (±15%, redundant power supply)

Power consumption: Approximately 120W (full redundancy, higher than compact models)

Operating temperature: 0°C ~ +60°C (industrial wide temperature range, suitable for harsh environments)

Bus architecture: H51q dedicated redundant system bus (QMR architecture, high reliability)

Protection level: IP20

Certifications: TÜV, CE, SIL3, ATEX (optional)

Response time: ≤ 0.05ms (high-speed redundant processing)

Key features

19-inch standard wide body: compatible with industrial universal cabinets, larger I/O capacity, strong expansion capability

QMR quadruplexed redundancy: CPU + power dual redundancy, no single point failure, availability 99.999%

H51q native compatibility: seamless integration into H51q platform, supports hot swapping and online maintenance

High-integration standard design: 5U height + standard cabinet installation, suitable for regular control room scenarios

SIL3 safety certification: meets IEC 61508, suitable for ESD/BMS/FSS and other safety-critical systems

Typical applications

ESD emergency shutdown system for large and medium-sized petrochemical plants (conventional control room cabinet room)

BMS combustion management, boiler safety control for main power generation units (standard safety platform)

SIS safety instrument system for long-distance natural gas pipelines / compressor stations (19-inch standard cabinet compatible)

SIL3-level safety control for large-scale high-risk process plants (medium-large-scale I/O requirements)