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Symmetra MW - What alarms can appear on the display?
Issue:
Customers have inquired about the alerts that can appear on the MW display, severity level, and possible actions

The MW also has input relays which can trigger different alerts on the display.  Relay inputs are not faults with the UPS.  They are external events reported to, or through, the UPS.  These events can influence UPS operation.

Product line:
Symmetra Megawatt

Environment:
All models, all serial numbers

Cause:
Customer Inquiry

Resolution:
Reference the attached PDF Document for complete list as of firmware revision 25.20
Alarm Levels as of Revision 25.20
Info: Informational Alarm. No immediate action required. Check the cause of the alarm at next maintenance visit.
Warning: The UPS system may have gone into bypass. The load remains supported, but action must be taken. Call Technical Support. The area on the right side of the top screen alternates between blue and red.
Severe: Take immediate action. Call Technical Support. The red area of the top of the screen alternates between blue and red.
Display MessageAlarm Severity
1=Info
2=Warning
3=Severe
Notes
Battery temperature is no longer high1
Battery temperature is high - UPS shutdown started3
Battery current is no longer high1
Battery current is high - UPS shutdown started3
Battery current is no longer over limit1
Battery current is over limit2
Battery voltage OK1
Battery voltage high2
Battery cubicle fuse blown3This will also report if battery breaker is open
Battery Breaker Open3The UPS will not be able to operate in battery operation
Discharging Batteries2
Battery Capacity Test Running1Battery capacity test being performed.
Relay inputs are not faults with the UPS. They are external events reported to or through the UPS. These events can influence UPS operation.
Relay Input: Generator ActiveRelay Board 1 Input 1  Input for indicating that a generator is active. This will be used to reduce the charge power. This also activates the use of online delay.
Relay input: Battery Room Ventilation FaultRelay Board 1 Input 2  Input for indicating that the ventilation in battery rooms is defect. This will be used to reduce the charge power.
Relay input: DC Ground fault detectionRelay Board 1 Input 3
Relay input: Plant clock synchronizationRelay Board 1 Input 5
Relay input: Power tie detectionRelay Board 1 Input 6   Input from PLC to detect if power tie is active.
Relay input: forced battery operation onRelay Board 1 Input 7   This input will force the unit to battery operation when activated in normal operation and report it in the event log.
Relay input: Lock Requested BypassRelay Board 1 Input 8   When the system is in bypass it will get locked in bypass
Relay input: Remove charge derating on generatorRelay Board 2 Input 1  Input for deactivate charge derating when on generator (Relay input 1 board 1).  Will activate derating when load is over 90% and deactivate under 80% load.

施耐德電機Taiwan

附件
Sym MW Display Alarms.pdf [451.4 KB]
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