Specifications

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”)

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.

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