Fault monitor

The new electronic Sitop PSE200U selectivity module from Siemens Industry Automation and Drive Technologies monitors up to four 24V load feeders for overloads and short circuits. There are two versions of the device with output current ranges of 0.5 to 3 and 3 to 10A. In comparison to the previous Sitop select model, which had a wide adjustment range of 2 to 10 amperes, these new versions of the device can be much more closely matched to the application.

Used as an additional component in stabilised 24V power supplies, the new selectivity module detects not only slight overloads but also ‘creeping’ short circuits on high-resistance cables. If an overload or short circuit occurs, the device switches off the current to the faulty path. This prevents the power supply voltage from dipping, thus ensuring that power continues to be supplied to all the other channels unaffected by the fault.

Contact Details and Archive...

• Siemens Industry Automation & Drive Technologies

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