RT9 Powershelf
Rectifier Technologies
158-1806-01.doc
27
2-Mar-06
5.2.3 MiniCSU-3 Alarms
A list of all the possible alarms that can be enunciated is shown in the following table.
Alarm Name
Comments
LED
SMR Alarm
Combination of one or more SMR alarms
A
SMR Urgent
One or more SMRs have shut down
A+R
SMR HVSD
SMR shut down due to output over-voltage
A+R
UNIT OFF
SMR is off
A+R
No Response
A particular SMR is not responding to the MiniCSU-3
A
Power Limit
SMR is in Power Limit
A
No Load
SMR output current less than minimum for SMR type used
A
Current Limit
SMR in current limit
A
Voltage High
Voltage measured by SMR too high
A
Voltage Low
Voltage measured by SMR too low
A
UNCAL SMR
SMR Internal Adjustment for current sharing out of limits
A
EEPROM Fail
EEPROM failed (CSU or SMR)
A
Fan Fail
SMR Internal Fan failure alarm (only possible on SMRs with fans)
A
Relay Fail
SMR output relay contact failure
A
No Demand
Control loop in SMR not in normal state
A
H/S Temp High
SMR heatsink temperature too high (where available)
A
DC-Dc Contr Fail
SMR DC/DC converter fault
A+R
Temp Sensor Fail
Temp sensor in SMR faulty - S/C or O/C (where available)
A+R
Vref Fail
Voltage reference in SMR microprocessor circuit faulty
A+R
HVDC not OK
DC/DC converter (boost) voltage in SMR not OK
A+R
AC Volt Fault – detected
by SMRs
All SMRs are reporting AC fault. Available only on some SMR models.
A+R
AC Volt Fault – detected
by CSU
None of SMRS are responding (AC fail assumed), or if AC monitor is
used, AC voltage is out of limits set
(When no AC monitoring module is used, this comes together with “SMR Comms Fault”)
A
AC Freq Fault
AC frequency lower or higher than preset value
A
Battery Switch
One or more battery switches open
A
Cct Breaker
Fuse or CB in load distribution open
A
LVDS Open
Low Voltage Disconnect switch open
A
Sys Volts High
System output volts too high
A
Sys Volts Low
System output volts too low
A
System V Clamp
CSU can not reach desired system voltage. This can be due to possible
excessive voltage drop along bus bars or “System V Drop” parameter
has value too low.
A
Cell V High
One or more cells being monitored by BCM is too high in voltage
A
Cell V Low
One or more cells being monitored by BCM is too low in voltage
A
Cell %dev High
One or more cells being monitored by BCM is too high % deviation from
the mean battery cell voltage
A