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HIMA Z7126 – Quadruple Modular Redundancy Central Control Unit
Product Overview
The Z7126 is a high-performance central control unit (CCU) built for HIMA H41/51q safety instrumented systems. It uses quadruple modular redundancy (QMR) with four independent processors, delivering fault tolerance and high availability for safety-critical operations. Designed to handle up to 128 I/O channels, the unit integrates Ethernet and CANopen interfaces for seamless system communication. It addresses the need for reliable, SIL 3-certified control in industries like power generation, oil and gas, and chemical processing, ensuring safe and continuous process control.
Technical Specifications — Z7126
| Parameter | Value |
|---|---|
| Product Model | Z7126 |
| Manufacturer | HIMA |
| Product Type | Central Control Unit (CCU) |
| Power | 5 V DC (backplane-supplied) |
| Communication / Protocol | Ethernet, CANopen |
| Operating Temperature | 0 °C ~ +60 °C |
| Mounting | Rack mount, 4 TE width |
| Dimensions (HxWxD) | 120 × 80 × 30 mm |
| Weight | 0.5 kg |
| Typical Interfaces | Redundant processor cores, system bus |
| Compliance | IEC 61508 (SIL 3), IEC 62304 |
Z7126
Key Features and Benefits — Z7126
- QMR Architecture: Four independent processors (two per CU module) provide redundancy, minimizing single points of failure.
- High Processing Power: 200 MHz speed with 128 MB RAM and 16 MB flash memory supports complex safety logic and data processing.
- SIL 3 Compliance: Certified to IEC 61508 SIL 3, suitable for high-risk applications requiring rigorous safety integrity.
- Scalable I/O: Controls up to 128 channels, adaptable for small to large safety system configurations.
- Robust Communication: Ethernet and CANopen ports enable reliable data exchange with I/O modules and host systems.
Related Models
- HIMA F8650X: Central CPU module that pairs with Z7126 for coordinating safety system operations.
- HIMA F7133: Power distribution module supplying stable power to Z7126 and connected I/O units.
- HIMA F3238: Safety input module that works with Z7126 to collect field signals in safety loops.
- HIMA Z7138: Extended communication module enhancing Z7126’s network connectivity for large systems.
Installation and Maintenance — Z7126
- Installation: Insert into a standard HIMA rack, secure backplane connections, and verify 5 V DC power supply from the system rack.
- Maintenance: Inspect LED status indicators regularly for fault diagnostics; no routine calibration is needed due to its robust design.
- Compatibility: Ensure firmware compatibility with H41/51q systems; use HIMA’s official software for configuration and updates.
