Pw9120-700i dc bus fault ,low o/p v messages

The VSD Fault G1F032 on an Ingersoll Rand 110 kW VSD (variable speed drive) likely indicates an issue with the drive's DC bus. This fault code indicates that the DC bus voltage has dropped below the acceptable range, which can cause the drive to trip or shut down.
Here are some steps you can take to troubleshoot this fault:

1. Check the incoming AC voltage to the drive to ensure that it is within the acceptable range. Low voltage or voltage fluctuations can cause the DC bus voltage to drop below the acceptable range.
2. Inspect the DC bus capacitors for signs of damage or leakage. Damaged or faulty capacitors can cause the DC bus voltage to drop and trigger the fault code.
3. Check the connections between the DC bus and the drive's power modules. Loose or faulty connections can cause voltage drops and trigger the fault code.
4. Check the drive's cooling system, such as the fans or heat sinks, to ensure that they are operating correctly. Overheating can cause the DC bus voltage to drop and trigger the fault code.
5. Consult the drive's manual or contact the manufacturer for additional troubleshooting steps or assistance.

It is important to take caution when working with electrical components and ensure that any modifications or repairs are done by a qualified technician.

How are you checking the batteries? If you are simply reading the voltage with a multimeter, then this is probably your issue. The batteries, when getting worn out, will often show full voltage in a static (non-loaded) state, but as soon as they are called on to produce load, their voltage will drop significantly, thus giving the DC bus low indication. Batteries in UPS's are similar to car batteries, they need to be tested under load to ensure they are good. If they are three years old or older, chances are they need to be replaced.

chck all your bus controller and also check DC capacitors.

http://www.fixya.com/support/t133894-powerware_9120_dc_bus_fault_problem

try canadian tire

After opening the unit up, this info I found out about the rechargeable battery.

[Info off the battery's label]:
*GS Rechargeable Lead-acid Battery (Portalac) PE12V7A (12v 7Ah) - sealed lead battery*

I hope that info help you, or someone, if you got a 12v 7AMP tip positive DC wall adapter, that thearadacly(sp?) will charge the battery, but I'm doing guess work since I don't know much about the AMP in voltage stuff.

I tried my best.

After opening the unit up, this info I found out about the rechargeable battery.
*GS Rechargeable Lead-acid Battery (Portalac) PE12V7A (12v 7Ah) - sealed lead battery*

I hope that info help you, or someone, if you got a 12v 7AMP tip positive DC wall adapter, that thearadacly(sp?) will charge the battery, but I'm doing guess work since I don't know much about the AMP in voltage stuff.

I tried my best.

This indicates a low battery condition for the main control panel. Replace the battery in the main control. 12V 4-7AH usually.

Alarmprofessor.com

The sealed lead acid batteries in them have come down a lot in price now, see here for one on batterytrader, 12v 7ah sealed lead acid battery

ok how long you brought the ups and how long you had not start the the ups usaully ups is power dead change the battery and try to power up it should work be sure that all connection is connect properly before power up the ups.. if the ups doest work that will be the mainboard problem you hav to call for vedor to repair the unit.. yes these fuse for the ups but it unlikely to be blown so should worry of the fuse it self.. change of battery come with different spefc for the ups.. eg su3000rmi3u, sua3000rmi3u, su3000rmxl3u --- battery replacement is 8 pcs of 12v 7ah. sua3000rmi2u-- 6 pcs of 12v 7ah or 8 pcs 12v 5ah. su3000rminet-- 4 pcs 12v 17ah,