INFOSEC UPS SYSTEM E4 Pro One Series User Manual page 56

50 Hz, Normal mode
ATO
Note: If the UPS is set to CVCF mode, the bypass function will be disabled automatically.
But when a single UPS without parallel function is powered on with mains and before the UPS
finished the startup, there will be a few seconds of voltage pulse (same as the input voltage)
on the bypass output.
If you need to remove the pulse on this mode to protect your load better, you could contact the
dealer for help.
For the UPS with parallel function, this pulse situation won't happen.
03: Voltage range for bypass
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Interface
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fixed at 50Hz. The input frequency could be from 46Hz to 64Hz.
60CF: Setting UPS to CVCF mode and output frequency will be
fixed at 60Hz. The input frequency could be from 46Hz to 64Hz.
50NC: Setting UPS to normal mode (not CVCF mode). If selected,
the output frequency will synchronize with the input frequency
within 46~54 Hz. UPS will transfer to battery mode when input
frequency is not within 46~54 Hz.
60NC: Setting UPS to normal mode (not CVCF mode). If selected,
the output frequency will synchronize with the input frequency
within 56~64 Hz. UPS will transfer to battery mode when input
frequency is not within 56~64 Hz.
At: If selected, output frequency will be decided according to the
latest normal utility frequency. If it is from 46Hz to 54Hz, the
output frequency will be 50.0Hz. If it is from 56Hz to 64Hz, the
output frequency will be 60.0Hz. The last two digits will show the
current frequency. At is default setting.
Setting
Parameter 1 & 2: Setting acceptable voltage range for bypass
mode. You have to set up the range by setting high and low
points. When it shows "LLS" in parameter 2, please press "Enter"
key and it will show "LS" in parameter 1. Now, you can set up low
point in parameter 2 by pressing "Up" or "Down" key.
LS: Set the acceptable low voltage for bypass. Setting range is
from 110V to 209V and the default value is 110V.
Pressing "Enter" key to confirm the setting value for low point.
Then, it will show HS in parameter 1. Please set up high point in
parameter 2 by pressing "Up" or "Down" key.
HS: Set the acceptable high voltage for bypass. Setting range is
from 231V to 276V and the default value is 264V.