ELSNER 70147 KNX PS640-IP 2U Smart KNX/Aux bus power supply

The ELSNER 70147 power supply, called KNX PS640-IP 2U, is an intelligent power supply unit designed to power a line of a KNX system. This device offers a maximum output current of 640 mA and an output voltage of 30 V DC.

Technical characteristics

The KNX PS640-IP 2U is characterized by a compact design, with dimensions of 94 mm x 36 mm x 71 mm, and a weight of about 370 g. Its white PA66 plastic structure (RAL 9018) is designed to be mounted on a 35 mm rail guide according to DIN EN 60715.

Power supply and protections

• Supply voltage: 230 V AC ± 15%, 50 Hz
• Power consumption (normal): 23 W, (maximum under overload): 42 W
• Efficiency at nominal load: 82%
• Overload and short circuit protection
• Disconnection time after a fault: 10 seconds
• Bridging time in case of power failure: > 100 ms

Diagnostic and Alarm Features

• Monitoring of output voltage, output current, telegram traffic, and device temperature
• Event monitoring (threshold, device start, KNX line reset)
• Monitoring of output anomalies (overload, short circuit, power failure)
• Configurable alarm functionality
• Configurable threshold functionality for further evaluation

Communication and Control Features

• Reset the device by means of a button on the device or via a bus line through a communication object
• Switching bus devices, electrical consumers or alarm indicators
• Informational reading: cyclical, on request or after a preset change in value
• Indication of the status of the device and the bus line via a six-LED duo display

Auxiliary power supply

The device includes an unfiltered auxiliary power output, adding flexibility to applications.