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20 February, 2020

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IP67 power supplies predict when they need to be replaced

17 January, 2012

Balluff has introduced a 24V DC industrial power supply that provides feedback on its real-time and long-term operational status, allowing replacement and maintenance times to be predicted. The Heartbeat supply uses three coloured LEDs to inform users about its load level, “stress level” and lifetime.

The load level indicates the actual load on the device in real time. If it reaches 80%, the indicator changes from green to yellow. If the load exceeds 100%, a red bar appears. The stress level depends on the electrical and thermal load. It shows if the internal temperature rises or falls as a result of a changing load and/or ambient temperature. The lifetime indicator shows the remaining service based on the total of all loads, and is irreversible. When it enters a red zone, the remaining useful life is less than eight years and the supply (which has a minimum service life of 15 years) should be replaced at the next available scheduled maintenance.

The LED indicators can be seen from a distance, allowing condition-based maintenance even for difficult-to-access supplies.

There are two models: a 100W supply, capable of delivering up to 3.8A, and a 200W version rated at up to 8A. The rugged, IP67-protected supplies can operate under continuously high load conditions and can deliver a 150% power boost for four seconds. Their operating efficiency is above 93%.

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