Sageon III Power System
Configuration and Operation
PM990-8800-00, Rev. 9
4-5
If all three LEDs are Off:
•
There may be no System output or battery string DC to power the SCU
•
The SCU may have failed
•
There may be no AC power to the System
•
On initial startup; all 3 LEDs may be off for approximately 10 seconds while the system boots up.
4.4 READING ALARM MESSAGES
If an alarm exists, an alarm message will alternate with the Home screen (the status LEDs
will also indicate the presence of an alarm). The alarm message will display for two seconds
every six seconds. A sample alarm message is shown below.
This message states that three alarms exist and they can be viewed by pressing the ENTER
button. When the button is pressed, the name and description of the most recent alarm are
displayed, as shown below. Press either the “up arrow” or “down arrow” button to view
remaining alarms. Pressing ENTER, or not pressing any button for ten seconds, will display
the Home screen.
To read the time and date of any alarm, press the LOG button and use the “up arrow” or “down arrow” button to scroll to the desired
alarm(s).
A list of all operator panel annunciated messages is found in Table 4-3.
TABLE 4-3 OPERATOR PANEL ANNUNCIATED ALARM MESSAGES
Alarm Name
Comment
LED ON/FL
SMR Alarm
Combination of one or more SMR alarms
Amber (FL)
SMR Urgent
One or more SMRs have shut down
Amber+Red
SMR HVSD
SMR shut down due to output over-voltage
Amber+Red
UNIT OFF
SMR is off
Amber+Red
No Response
A particular SMR is not responding to the SCU
Amber (FL)
Power Limit
SMR is in Power Limit
Amber (FL)
No Load
SMR output current less than minimum for SMR type
Amber (FL)
Current Limit
SMR in current limit
Amber (FL)
Voltage High
Voltage measure by SMR too high
Amber (FL)
Voltage Low
Voltage measure by SMR too low
Amber (FL)
UNCAL SMR
SMR internal adjustment for current sharing out of limits
Amber (FL)
EEPROM Fail
EEPROM failed (SCU or SMR)
Amber (FL)
Fan Fail
SMR internal fan failure alarm
Amber (FL)
Relay Fail
SMR output relay contacts failure
Amber (FL)
No Demand
Control loop in SMR not in normal state
Amber (FL)
H/S Temp High
SMR heatsink temperature too high
Amber (FL)
Temp Sensor Fail
Temperature sensor in SMR microprocessor circuit failed
Amber+Red
Vref Fail
Voltage reference in SMR microprocessor faulty
Amber+Red
AC Volt Fault
None of the SMRs are responding (AC failure assumed), or if AC monitor is used, AC
voltage is out of limits
Amber+Red
AC Freq Fault
AC frequency lower or higher than preset value
Amber (FL)
Battery switch
One or more battery switches open
Amber (FL)
Cct Breaker
Fuse or circuit breaker in load distribution open
Amber (FL)
LVDS Open
Low Voltage Disconnect switch open
Amber (FL)
Sys Volts High
System output voltage too high
Amber (FL)
Sys Voltage Low
System output voltage too low
Amber (FL)
Cell V High
One or more cells being monitored by SBM are too high
Amber (FL)
Cell V Low
One or more cells being monitored by SBM are too low
Amber (FL)
Cell %dev High
One or more cells being monitored by SBM are too high % deviation from the mean
battery cell voltage
Amber (FL)
Cell %dev Low
One or more cells being monitored by SBM are too low % deviation from the mean
Amber (FL)
3 Alarms
Press ENTER
Alarm 1
Amb Temp High
