User manual

Chapter 6 Operating Instructions 47
NXr UPS Module And Parallel System 30kVA ~ 200kVA User Manual
 after the mains power is restored
 if Auto Recovery after EOD Enabling is enabled
 after the Auto Recovery after EOD Delay Time expires (the default delay is 10min). during the automatic
recovery delay, the UPS will charge its batteries to provide a safety margin for equipment shutdown if input
power fails again
If the Auto Recovery after EOD Enabling feature is disabled, the user may restart the UPS manually by pressing the
FAULT CLEAR button.
6.10 UPS Reset Procedures
After an EPO action or UPS shutdown due to inverter over temperature, overload, battery over-voltage or too many
transfer times, once all appropriate measures have been taken to correct the problem indicated by the alarm
message on the LCD, carry out the following procedures to restore the UPS to normal operation.
1. Press the FAULT CLEAR button to let the system exit the shutdown state.
2. When the rectifier begins to operate normally (rectifier indicator in solid green), press and hold the INVERTER ON
button for 2s.
Note
1. The rectifier will start and the bypass will begin to power the load. The rectifier indicator flashes while the rectifier is starting up.
When the rectifier enters normal operation (about 30s later), the rectifier indicator turns green.
2. The rectifier will be turned on automatically when the overtemprature fault disappears 5 minutes after the disappearance of
overtemprature signals.
After the EPO switch is pressed, if the mains input is cut off, the UPS will shut down completely. When the mains
input returns, the UPS will start up on bypass. There will be power at the output terminals of the UPS.
Warning
1. If the maintenance switch is in the ON position and the mains input is present, there will be power at the otuput terminals of the
UPS.
2. If you need to maintain a faulty module, wait for 10min to let the internal DC bus capacitor fully discharge before removing the
faulty module for maintenance.