Replacing an overspeed protection system doesn’t have to be a lengthy or complex project. With the SpeedSys ODS cabinet, Istec has designed a direct retrofit solution. This makes replacing the Woodward ProTech system as straightforward as a standard ProTech swap, but with all the benefits of a modern, certified by design safety system. Within a single day, your installation will be operational again: safe, reliable, and ready for the future.
\nSpeedSys ODS is built around a maintenance philosophy focused on cost savings and availability. Instead of frequent online tests and regular checks, as required by older systems, SpeedSys ODS performs continuous internal self-diagnostics. This guarantees the system is reliable and ready to act at all times. Additionally, it is designed with a proof-test interval of minimum ten years, resulting in fewer maintenance moments, lower lifecycle costs, and minimal downtime. For plants where uptime is critical, this offers clear operational and financial advantages.
\nIn installations located in hazardous areas, external barriers are often required to protect the sensors installed in the hazardous area. SpeedSys ODS eliminates this extra hardware by integrating ATEX/IECEx Ex ia certified sensor circuits as standard. This means less cabling, fewer components in the critical sensor loop, and a simpler installation process. The system is intrinsically safe from the very first connection, significantly simplifying retrofit projects.
\nSpeedSys ODS offers Modbus RS485 with an extensive address list to fully trend the internal behavior and actions. This makes integration with modern DCS and ESD architectures simple and future-proof. In addition, USB configuration ensures a fast and intuitive setup. For plants embracing digitalization and remote monitoring, this is a major advantage.
\n| Aspect | \nWoodward ProTech GII | \nIstec SpeedSys ODS Cabinet | \n
| Installation | \nOne-to-one replacement | \nOne-to-one replacement | \n
| Safety level | \nSIL3, API 670/612 | \nSIL3 (SpeedSys 300), API 670/612, IEC 61508 | \n
| Sensor safety | \nExternal IS barriers or isolators required | \nEx ia integrated, galvanic isolation | \n
| System safety | \nEx nA (Zone 2) | \nDesigned to be placed in Instrument control rooms | \n
| Maintenance | \nRegular checks, online trip test function required | \nContinuous automatic self-diagnostics, minimum 10-year proof-test interval | \n
| Communication | \nRS232/485, optional Ethernet | \nRS485 Modbus standard | \n
| Architecture | \nTMR (monolithic) | \nModular, Standalone modules, hardwired voting (1oo2, 2oo2, 2oo3, 3oo3) | \n
| Form factor | \nCompact unit | \nCompact cabinet, DIN-rail modules | \n
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Replacing a ProTech system with SpeedSys ODS is simple, fast, and safe. You get a new system, certified by design, that not only meets the highest safety standards but also addresses today’s requirements: flexible setup, intrinsic safety inputs, and low lifecycle costs. Why choose an outdated design when you can upgrade to a future-proof solution, without added complexity?
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