Contents  4 
Readying the equipment ................................................................................................................. 56 
Installing the mounting rails ...................................................................................................................... 56 
Preparing the rails for integrated shipping .................................................................................................. 58 
Switching off the UPS battery circuit breaker ............................................................................................... 59 
Switching off the ERM circuit breaker ......................................................................................................... 59 
Installing the ERM .................................................................................................................................... 60 
Attaching the ERM front bezel ......................................................................................................... 62 
Connecting the ERM to the UPS ....................................................................................................... 62 
Switching on the ERM circuit breaker ............................................................................................... 63 
Switching on the UPS battery circuit breaker ..................................................................................... 63 
Charging the ERM batteries ............................................................................................................ 63 
UPS operations ........................................................................................................................... 64 
Mimic screen .......................................................................................................................................... 64 
Modes of operation ................................................................................................................................. 64 
Standby mode .............................................................................................................................. 64 
Normal mode ............................................................................................................................... 65 
Battery mode ................................................................................................................................ 66 
Auto-Bypass mode ......................................................................................................................... 66 
Configuring the UPS ................................................................................................................................ 67 
Changing the language.................................................................................................................. 67 
Changing display functions ............................................................................................................. 67 
Changing user settings ................................................................................................................... 68 
Setting the Battery Low alarm level ............................................................................................................. 70 
Running automatic battery tests ................................................................................................................. 71 
Testing the front panel display ................................................................................................................... 71 
Silencing an audible alarm ....................................................................................................................... 71 
Verifying the REPO port connection ........................................................................................................... 71 
Powering down the standalone UPS ........................................................................................................... 72 
Powering down an individual paralleled UPS .............................................................................................. 72 
Powering down the parallel system ............................................................................................................ 73 
Communication .......................................................................................................................... 74 
Installing communication options and control terminals ................................................................................. 74 
Communication options ............................................................................................................................ 75 
DB-9 communication port................................................................................................................ 75 
Control terminals ..................................................................................................................................... 76 
Relay output contacts ............................................................................................................................... 76 
Programmable signal inputs ...................................................................................................................... 77 
Parallel communication ............................................................................................................................ 77 
Mode transfers .............................................................................................................................. 78 
Redundant signal wiring ................................................................................................................. 78 
Auto-identification .......................................................................................................................... 78 
Metering ...................................................................................................................................... 79 
Power management .................................................................................................................... 
80 
HP UPS Power Protection Agent overview ................................................................................................... 80 
Features ................................................................................................................................................. 80 
Maintenance .............................................................................................................................. 81 
Removing the UPS front bezel ................................................................................................................... 81 
Removing the ERM front bezel ................................................................................................................... 81 
Replacing the UPS electronics module ........................................................................................................ 81 
Replacing UPS X-Slot cards ....................................................................................................................... 83 
Configuring the Parallel UPS Card ............................................................................................................. 84