Purchase now: Allen Bradley 1747-PSD Program Storage Device
Purchase now: Atlantechdrives provides you the 1747-PSD, an incredibly unique and highly valuable Program Storage Device engineered by Allen Bradley for the SLC 500 platform. In the fast-paced world of industrial maintenance, a technician does not always have immediate access to an engineering laptop, the correct RSLogix 500 software version, or the necessary communication cables. The 1747-PSD acts as a portable, handheld flash memory drive that completely eliminates the need for a PC during emergency program restorations. Placed directly into the DH-485 port of an SLC 500 processor, this device allows a technician to upload a pristine copy of a running machine’s logic with the push of a button, store it safely in their toolkit, and download it instantly to a replacement processor if the original hardware suffers a catastrophic failure.
Technical Specifications of the 1747-PSD
The 1747-PSD is a compact, ruggedized device designed for the factory floor. It utilizes non-volatile flash memory to ensure that your critical automation programs are retained indefinitely without the need for internal backup batteries.
- Part Number: 1747-PSD
- Component Type: Portable Program Storage Device
- Compatible Processors: SLC 5/01, 5/02, 5/03 (via DH-485)
- Storage Capacity: Up to 64K Words
- Communication Interface: DH-485 (RJ45 connector)
- Power Source: Powered directly by the processor’s communication port
- User Interface: Physical Upload/Download pushbuttons and LED status lights
- Memory Technology: Non-volatile Flash
Expert Tips: The PC-Less Disaster Recovery
The true power of the 1747-PSD is its simplicity during a midnight breakdown. Expert Tip: To back up a running machine, you simply plug the included RJ45 cable from the 1747-PSD into the Channel 1 port of the SLC processor. Once the «Ready» LED illuminates, you hold the «Upload» button. The device automatically reads the entire logic program, data tables, and network configurations from the PLC and writes them to its internal flash memory. If that PLC later gets destroyed by a power surge, you simply slide a blank, out-of-the-box processor into the chassis, plug in the 1747-PSD, and hold the «Download» button. The logic is instantly restored, and the machine is back in production in under 5 minutes, without a single laptop booting up.
Maintenance and Port Power Constraints
It is critical to understand how the 1747-PSD receives its power. It does not have an internal battery or a power cord; it draws 24V DC directly from the pins of the DH-485 RJ45 port on the front of the processor. Maintenance Warning: Because the RJ45 port carries 24V DC power, you must never mistakenly plug this device, or its cable, into a standard Ethernet port (like the one found on an SLC 5/05). Doing so will not work and may cause electrical damage. Furthermore, if the processor’s communication port has a blown internal fuse, the 1747-PSD will not power on.
Frequently Asked Questions (FAQs)
Q: Can the 1747-PSD hold multiple PLC programs at the same time?
A: No. The device is designed to hold one complete SLC 500 program (up to 64K in size) at a time. Every time you perform an «Upload,» it overwrites the previously stored program.
Q: Does it work with the SLC 5/04 or 5/05 processors?
A: The 5/04 and 5/05 processors do not have an RJ45 DH-485 port on the front panel. To use the PSD with these processors, you must utilize an intermediate adapter or connect it through a separate DH-485 network hub that supplies the necessary 24V DC power.
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This power supply filter ensures stable logic power when paired with a standard 1746-P1 SLC power supply.
