What causes Distribution Fuse Failure in Unipower Guardian Access 3U Power Supply?
A Distribution Fuse Failure in your Unipower Power Supply is caused by a tripped load breaker or a blown load fuse. Verify there is no short circuit in the load cabling. Reset the breaker; if it trips again, there is a problem with the load or the breaker itself. Replace the breaker or fuse if necessary.
What to do if Unipower Power Supply shows Module Failure?
If your Unipower Power Supply indicates a module failure, it could be due to a faulty module, AC power being off on a single rectifier (if multiple are installed), a rectifier current sharing fault, low DC output voltage, overvoltage shutdown, module fan failure, or the module overheating. First, check if the module sends an alarm flag. Then, verify the AC voltage to the failed module. Try re-inserting the faulty module and waiting 30 seconds. If the problem persists, replace the faulty module.
What causes Unipower Guardian Access 3U Power Supply to have high system voltage?
High system voltage in your Unipower Power Supply can be caused by module failure or if the system voltage exceeds the set limit. In this case, replace the faulty module and check the High Voltage Alarm limit setting.
What to do if Unipower Guardian Access 3U Power Supply shows AC Low Voltage?
If your Unipower Power Supply is showing an AC Low Voltage error, it means the AC voltage has dropped below the set limit. To fix this, verify the Low AC voltage limit setting, check the AC input connection, and verify the AC input voltage.
What to do if Unipower Guardian Access 3U Power Supply shows AC High Voltage?
If your Unipower Power Supply is showing an AC High Voltage error, it means the AC voltage has risen above the set limit. To resolve this, verify the High AC voltage limit and verify the AC Input voltage.
What does Mains Error mean on Unipower Power Supply?
A Mains Error on your Unipower Power Supply indicates that the AC supply is OFF on one rectifier in a system with only one rectifier plugged in, or the AC supply is OFF on at least two rectifiers in a system with a minimum of two rectifiers plugged in. To resolve this, verify that the AC input breaker is ON and check the AC input connection.
What does Alarms Blocked mean on Unipower Power Supply?
The 'Alarms Blocked' message on your Unipower Power Supply (only with LCD display) indicates that the alarm has been manually activated by a serviceman on site, typically during system servicing. This blocks other alarms from being displayed. It needs to be manually turned OFF to allow alarms to be displayed.
What causes Battery Fuse Failure in Unipower Guardian Access 3U Power Supply?
A Battery Fuse Failure in your Unipower Power Supply is caused by a tripped load breaker or blown load fuse. Verify there is no short circuit in the load or battery cabling and that the breaker/fuse is correctly rated. Reset the breaker; if it trips again, there is a problem with the load, battery, or the breaker itself. Replace the breaker or fuse if necessary.
How to resolve Symmetry Fault in Unipower Guardian Access 3U?
A Symmetry Fault in your Unipower Power Supply can be caused by a battery at the end of its life, a wrong symmetry cable connection, or a wrongly set Symmetry limit value. To resolve this, verify the battery condition, the symmetry cable connection, and the Symmetry limit value.
How to fix Communication Failure on Unipower Guardian Access 3U Power Supply?
A Communication Failure in your Unipower Power Supply can stem from a module failure, modules not installed correctly, or a broken/disconnected communication wire. Here’s what to check: * Check the non-communicating address. * If a rectifier address isn't communicating, reinstall the module and wait 5 minutes. * Verify the communication cable is properly connected and undamaged; replace if needed. * For a non-communicating board address, check its installation; if installed, replace the board. * If a module or unit isn't communicating, remove its address from the controller (only if you're sure it's no longer in use). * Finally, verify the controller's operation; replace it if necessary.
General| Input Voltage | 90-264 VAC |
|---|---|
| Form Factor | 3U |
| Input Frequency | 47-63 Hz |
| Efficiency | Up to 90% |
| Cooling | Forced Air |
| Operating Temperature | 0°C to +50°C |
| Protections | Overvoltage, Overcurrent, Overtemperature, Short Circuit |
| MTBF | 100, 000 hours |
| Safety Standards | UL |
| EMC Standards | EN55022 |
To Next Page
