HIMA B5233-2 (H51q-HRS Redundant Bus Central Rack)

B5233-2 is a 19-inch 5U high-availability central rack from the German HIMA (Black Horse) H51q series. Its full model name is H51q-HRS (High Reliability System), featuring a full redundant architecture of redundant bus + redundant CPU. It is designed for large SIS/ESD/BMS systems and is the high-end central rack model of the H51q series. Basic Information

Model: B5233-2 (H51q - HRS), Part Number 997205233

Brand/series: HIMA / H51q (QMR Quadruple Redundancy Architecture)

Type: 19-inch 5U Central Rack Assembly Component

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

Positioning: H51q series fully redundant central rack, supporting redundant I/O bus, no single point of failure

Rack Specifications

Dimensions: 19-inch wide × 5U high (approximately 222mm) × 248mm deep

Structure: K1412A dedicated rack, with integrated cable slots, 3 K9212 fan modules, and redundant bus backplane Z1009

Installation: Fixed in 19-inch standard cabinet

Weight: Approximately 10kg (full configuration)

I/O slots: 13 I/O modules (including CPU and power slot, up to 208 I/O points)

Standard configuration (full redundant architecture)

1 × K1412A 5U 19-inch rack: with fan assembly and redundant backplane

2 × F8650A: redundant CPU modules (QMR quadruplexed, CU1/CU2)

3 × F7126: power modules (24V/5V, 10A, PS1-PS3, redundant power supply)

1 × F7131: power monitoring module

1 × Z6012: fan monitoring module (including fan operation / fuse monitoring)

4 × F7546: bus terminal module (dedicated for redundant bus, B5233-2 unique)

Power distribution components: 3 × Z6011 (power decoupling / fuse), 2 × Z6013 (WD signal power distribution)

Core parameters

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

Power consumption: Approximately 180W (full configuration)

Operating temperature: 0°C ~ +60°C (industrial wide temperature range)

Protection level: IP20

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

Key features

Full redundant without single point of failure: redundant I/O bus + redundant CPU + redundant power supply, availability up to 99.9999%

Central rack positioning: 13 I/O slots, suitable for large-scale device high-number SIS projects, compatible with H51q full series I/O modules

QMR quadruple redundant technology: CPU uses 2oo4D voting mechanism, hardware failure automatically tolerates, safety level SIL3

Integrated design: Rack, backplane, fan, power distribution, monitoring unit integrated, direct card configuration on-site

Online maintenance: supports hot plugging of modules, online loading, online diagnosis, no downtime for card replacement

Model distinction (B5233-1 vs B5233-2)

B5233-1 (H51q-HS): single bus + redundant CPU, 2 F7546 terminals, economical high-reliability version

B5233-2 (H51q-HRS): redundant bus + redundant CPU, 4 F7546 terminals, full redundant flagship version

Differences from B5232 series

B5232: I/O expansion rack (16 slots), for system I/O expansion

B5233: central rack (13 slots), integrated CPU, power, bus control, system core unit