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The Siemens Power Interface (SPI) is an intelligent, multiple-function data transfer unit that enables communications between Siemens communicating power meters, trip units, protective relays and Modbus networks. The device is designed for a harsh industrial environment and is suited for use in switchgear. The SPI is powered from an external power supply or internal 115/230 VAC power supply. Three ports allow for connection to Siemens ACCESS devices and selected relays, Modbus RTU or ASCII host system and a pass through, which allows direct communications with port 2 from port 3. Status lights indicate proper operation, and DIP switches allow access to programming and diagnostic modes.
SPI Features
Siemens ACCESS devices supported:Power Meters, Trip Units, Protective relays and Input/Output devices
Daisy chaining of SPIs up to 32 per RS-485 connection with up to 32 devices per SPI
Three communication ports, RS-485, RS-422 and RS-232, supported SPI Editor
Includes configuration software
Compact size and rugged construction suitable for use in switchgear
SEAbus pass through port for connection to a WinPM or a redundant backup PLC or Modbus(RTU/ASCII) master system or supervisory computer