Alpha Technologies PowerAgent SC3 - Manual (Page 11)

PowerAgent TM SC3 Site Controller Document # 700-000014-01 Rev 2
Installation and Operation
Phoenix Broadband Technologies, LLC 10/28/2010
Page 11 of 57
2.2 Site Controller Description
The Site Controller is a small, rack-mountable unit that monitors the sensor modules and makes
the data collected by them available via a local area network or the internet. The SC3 Site
Controller has 6 string ports for connection to strings of up to 40 jars each for a total capacity of
240 jars. Two P-Bus ports provide expansion capability for connection to current sensors, RIMs
and ROMs for additional input and output capability. A USB setup port allows direct connection
to a PC for configuration. A USB thumb drive provides storage of logged data and additional
USB ports provide expansion capability.
The SC3 Site Controller has most of the connections on the rear panel and indicators on the front
panel.
The SC3 Site Controller can be
powered directly from a battery
string voltage of 24-48VDC, or it
can be powered from an
optional small wall-mount
24VDC wall transformer. The
voltage range is 18 to 65 VDC
and power consumption is about
5 watts, with current draw
dependent on the input voltage.
Power is supplied to the unit via
a rear-panel screw-type terminal
block. The power supply input is
floating. The terminal block also
provides a chassis ground
connection.
A Front panel USB connection provides access to configure the Site Controller IP address and
other parameters during installation. Setup can also be performed over the network connection.
The site controller has six RJ-45 connectors on the rear panel for interfacing to up to six strings of
monitored jars. Each string has a front panel indicator. The LED lights when the string is being
polled. A green LED indicates everything is normal, a red LED indicates abnormal conditions
within that string.
An Rear Panel Ethernet connection provides a TCP/IP (internet protocol) interface to a local area
network or to the internet. A built-in web server is accessible via this interface, with no need for
any software other than a common PC web browser. More sophisticated monitoring and control