Product Description:

The 5A5001.13 is a 2.5-inch magnetic hard disk supplied by B & R Automation as part of the 5A5 Hard Disks series. Within machine controllers and operator panels, this drive stores operating systems, motion programs, and event logs that must survive power cycling and vibration typical of industrial environments. By integrating ATA storage directly into the automation chassis, the module provides nonvolatile memory without relying on removable media. Its fixed-disk format also suits applications that need local retention of recipes, archived messages, and system files inside the control hardware.

With a formatted capacity of 20 GB, the disk provides adequate space for application software and historical data. The parallel ATA-5 interface supports a host transfer rate of 100 MB/s, allowing quick image downloads and file transfers between the controller and the drive. In operation, the platter rotates at 4,200 rpm and reaches operating speed in 5 seconds, after which the controller can expect an average access time of 7.14 ms. A dedicated cache of 2 MB buffers frequently used sectors to reduce mechanical latency during repeated reads and writes. Physical geometry uses 2 heads that sweep 35,968 user cylinders across 39,070,080 sectors, with 512 bytes stored in each sector. Because it uses a standard ATA connection, the drive can work with embedded hardware that expects a conventional fixed-disk interface.

A track density of 24,200 TPI and a bit density of 592 kbpi support high storage capacity on the media while keeping power demand low. Average seek events complete in 12 ms, so cyclic data logging can occur without long delays in controller access. For preventive maintenance planning, the unit is rated for 20,000 POH, giving a clear service-life reference based on accumulated power-on hours. That behavior is useful when operating data, alarm histories, and recipe files are written in the background while the main control task continues to run.