2.2 How the Product Works
- 6 -
Automatic bypass operation
When an abnormality occurs in the UPS, the output switching circuit switches
to
the direct feed bypass circuit and the AC input power is supplied to the load
from the direct feed bypass circuit.
In case of M-UPS015AE2□, the circuit switching takes some time (10 ms or
less).
In case of M-UPS030AE2□, the switching can be done without
momentary
interruption. The same applies when switching to bypass operation
manually using
the front switch. During bypass operation, even if an input power
failure occurs, the
battery will not supply power to the connected device(battery
operation).
Electricity flow during automatic bypass operation
Manual bypass operation
Manual bypass operation can be switched to bypass operation during normal
operation. Press the RESET and BYPASS switches simultaneously for 3
seconds.
Press again for 3 seconds to return to normal operation. In this case,
even if
the power failure occurs, the UPS becomes the power failure state
without
switching to the battery operation.
Electricity flow during manual bypass operation
AC/
Bypass
UPS
Charger
Batteries
Input power supply
Electricity is flowing
Electricity is not flowing
Output
to connected device
Power
failure to the
Product
Failure in the Product
AC/AC converter
Step-up chopper
Bypass
UPS
Charger
Batteries
Input power supply
: Electricity is flowing
: Electricity is not flowing
Output
to connected equipment
Manual switching to
bypass running
