Alpha Technologies PowerAgent SC3 - Manual (Page 34)

PowerAgent TM SC3 Site Controller Document # 700-000014-01 Rev 2
Installation and Operation
Phoenix Broadband Technologies, LLC 10/28/2010
Page 34 of 57
String Status Description
Normal The status of all sensors on this string are Normal
Disabled The string is disable through SNMP
Shorted The Site Controller output is shorted somewhere in the sensor daisy chain
MissingSensors More sensors were expected
TooManySensors More sensors are present than the string can handle
SensorFault One or more sensors are not communicating
Alarms One or more sensors have alarms
Initializing The string is initializing
SensorDisabled One or more sensor is disable through SNMP
StringDisconnected Nothing is connected to the Site Controller string port
NoSensorCom Something is connected to the port, but no sensors are communicating
The String Voltage reading displays the total string voltage measured by the sensors. For a Low
Voltage string this voltage is measured directly by the sensor on the most negative jar. For a
High Voltage string this voltage is the sum of the individual jar voltages. Alarms may be
provisioned for this voltage by pressing the associated A button.
The Cell Voltage Delta reading displays the difference between the highest and lowest jar
voltage. Too much variation in jar voltages could be an indication that there are problems with
some jars. Alarms may be provisioned for this voltage by pressing the associated A button.
The Sensor Com indicator will display “Normal” when the Site Controller is communicating with
all the battery sensors in the string and will display “Failed” when the Site Controller has lost
communications with one or more battery sensors. Alarms may be provisioned for this indicator
by pressing the associated A button.
The Current Sensor box will appear when there is a Current Monitoring Interface, with its
address set to the string number, connected to the Site Controller P-Bus A port. If the Float
Current Sensor is connected to the Interface the Float Current reading will be displayed. If the
sensor is not connected the reading will display “No Sensor”. Alarms may be provisioned for this
current by pressing the associated A button.
If the Discharge Current
Sensor is connected to the
Interface the Discharge
Current reading will be
displayed. If the sensor is
not connected the reading
will display “No Sensor”.
Alarms may be provisioned
for this current by pressing the associated A button.
If the Float Current Sensor is connected to the Interface the Ripple Current reading will be
displayed. If the sensor is not connected the reading will display “No Sensor”. Ripple current
readings are made automatically once per hour or on demand by pressing the “Measure Ripple
Current” button. Alarms may be provisioned for this current by pressing the associated A button.
The Com Status indicator will display “Normal” when the Site Controller is communicating with all
the Current Monitoring Interface and will display “Failed” when the Site Controller has lost
communications with the Current Monitoring Interface. Alarms may be provisioned for this
indicator by pressing the associated A button.
Refer to the String Setup Display for other Current Sensor Interface setup options.