PR 7908 Backplane

The PR 7908 Backplane is a robust, high-performance interface solution that streamlines the connection between PR 9000 intrinsically safe (I.S.) devices and standard automation systems such as PLCs, DCS, and safety systems. This compact backplane provides a safe, organized wiring platform for up to eight System 9000 units. The 7908, from PR electronics, supports numerous signal types including AI (analog input), AO (analog output), DI/DO (digital input/output), and HART communication. Thus, the PR 7908 Backplane is perfect for efficient integration and diagnostics across industrial automation applications.

• The 7908 Backplane is a compact and robust solution that enables a safe and easy connection of PR system 9000 IS device signals into standard automation systems.
• Standard automation system cables and connectors link the backplane to the I/O cards.
• The backplane is ideal for Direct, Redundant, and Duplicate signaling including HART I/O System connectivity (HART MUX).
• PR 9000 Series devices isolate and convert AI, AO, DI, and DO signals coming from, or going to, the I.S. classified area, then routes those signals to a system automation I/O card.
• The PR 9000 Series maintains a SIL2/SIL3 level of functional safety, even when mounting in the backplane solution.
• The PR 7916 Backplane is also available and supports up to 16 modules.

PR 7908 Backplane from PR electronics

Built to withstand demanding environments, the PR 7908 Backplane features a rugged, high-end design with digital status outputs and LED indicators. As a result, the 7908 delivers real-time status feedback on connected devices and redundant power supplies. Standard prefabricated I/O cables make connection to I/O cards simple, thus reducing installation time and minimizing wiring errors on complex panels.

• Robust, compact high-end design that holds eight (8) PR 9000 Series units.
• Digital output indicates status of PR 9000 devices and primary/back-up power supplies.
• Flexible 24 VDC supply voltage and redundant power supply connection solution.
• NOTE: PR 9000 Series modules are sold separately.

Easy Mounting, Installation, and Programming

The backplane supports direct, redundant, and duplicate signaling, including HART I/O (HART MUX) for advanced system communications. In addition, the PR 7908 Backplane maintains SIL2/SIL3 functional safety levels when used with PR 9000 Series modules. With wide voltage and environmental tolerance, the PR 7908 ensures reliable, organized, and safe deployment of I.S. interface devices in process automation systems.

• Flexible horizontal/vertical panel or wall mounting in the Safe or Zone 2 / Div 2 hazardous areas.
• PR 9000 Series devices easily snap ON and OFF using piano keys, and devices can also be hot-swapped.
• Tag number and ID labels easily mount and are read by the dedicated piano key spacer.
• Wide temperature operation range: -4 to 140˚F (-20 to 60˚C).