Njoy Helios PRO Series User Manual page 16

• Frequency Converter mode
When input frequency is within 40 Hz to 70 Hz, the UPS can
be set at a constant output frequency, 50 Hz or 60 Hz. The
UPS will still charge battery under this mode.
Rack display
• Battery mode
When the input voltage is beyond the acceptable range or
power failure and alarm is sounding every 4 second, UPS
will backup power from battery.
Rack display
30
(Rack)
Tower display
Tower display
• Bypass mode
When input voltage is within acceptable range but UPS is
overload, UPS will enter bypass mode or bypass mode can
be set by front panel. Alarm is sounding every 10 second.
Rack display
• Standby mode
UPS is powered off without output power, but the battery
still can be charged.
Rack display
Tower display
Tower display
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