4
Free Run Mode
Free run mode is a mode of operation in which the output frequency does not match
input frequency. The UPS operates in free run mode when the input frequency is
outside of the selected input frequency range. When starting the UPS, the targeted
frequency is 50 or 60 Hz ±0.25Hz Refer to section 4.3 Front Panel Settings to set up
bypass availability while running in free run mode.
Diagnostic Tests
When the UPS is started, a diagnostic test is executed automatically that checks the
electronics and battery, and reports any problems on the LCD display.
The advanced battery management system monitors the performance of the battery
and will indicate if battery replacement is required. The battery management system
tests the battery every 30 days of normal mode operation. A battery discharge test is
performed and reports any problems on the LCD display.
Except during the first 24 hours after startup while the UPS is in charging mode,
diagnostic tests can be performed manually from the front panel when required.