5A5001.10 B & R Automation
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The B & R Automation 5A5001.10 is part of the 5A5 Hard Disks series and features a 20 GB capacity with a 2 MB cache. This ATA-5 interface hard disk has an access time of 7.14 ms and a revolution speed of 4,200 rpm. It has a bit density of 592 kbpi and a track density of 24,200 TPI.
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Product Description:
B&R Automation's 5A5001.10 belongs to the 5A5 Hard Disks series and serves as non-volatile storage inside PLC backplanes and machine-level controllers, where rotating media safeguard application code, recipes, and log files. The drive connects through an ATA-5 interface on automation PCs and fits a fixed mounting bay that tolerates continuous duty. Its electromechanical design addresses the sustained read-write patterns typical of production cells, supporting predictable retrieval of data used for motion sequences and traceability records. This role also allows the controller to retain important operating data after power cycles without relying on removable media.
The storage capacity is rated at 20 GB, giving ample room for operating systems, real-time databases, and diagnostic images that accumulate during extended service intervals. A read-and-write cache of 2 MB buffers burst traffic between the magnetic media and the system bus, smoothing command queuing and reducing latency. When blocks miss the cache, the combined seek and rotational delay produces an access time of 7.14 ms, a figure that supports responsive HMI updates. Sustained host communication occurs across the bus at up to 100 MB/s, allowing large data transfers to move quickly between the controller and the drive. The platter turns at 4,200 rpm ±1%, balancing energy demand with the thermal limits of sealed control cabinets.
The linear bit density reaches 592 kbpi, while radial track density is 24,200 TPI, allowing 39,070,080 user sectors to reside on only 2 heads. Each sector accommodates 512 bytes, matching legacy file-system assumptions used in many controllers. The geometry lists 35,968 user cylinders and uses 48/50 RLL encoding during low-level formatting. With its fixed mounting arrangement, the drive maintains alignment even when control-panel doors are opened for service access. The installed form also helps keep the drive secure in compact automation hardware where vibration control and steady connector positioning are important.
