Chapter 4 Operations
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SM 180-600 KMFX User Manual
(b) Press and hold the BYP key on the operator control panel for longer than two seconds and
the system transfers to bypass mode. This needs to enable the switch behind the front
door. See Fig.4-3.
Fig.4-3 Enable the switch
Warning
Ensure the bypass is working normally before transferring to bypass mode. Or it may
cause failure.
4.2.3 Switching the UPS into Normal Mode from Bypass Mode
Two ways to transfer the UPS into Normal mode from Bypass Mode
：
(a) Enter the menu Operate, touch the icon transfer to inverter
and the system
transfers to bypass mode
(b) Press and hold the INV key on the operator control panel for longer than two seconds and
the system transfers to Normal mode.
Note
Normally, the system will transfer to the Normal mode automatically. This function is used
when the frequency of the bypass is over track and when the system needs to transfer to
Normal mode by manual.
4.2.4 Switching the UPS from Normal Mode into Maintenance Bypass Mode
These following procedures can transfer the load from the UPS inverter output to the
maintenance bypass supply, which is used for maintaining the bypass module (for 6-slot and
10-slot cabinet) and monitoring, static bypass unit (for 20-slot cabinet).
1.
Transfer the UPS into Bypass mode following section 4.2.2.
2.
Open the battery breaker and close the maintenance bypass. And the load is powered
through maintenance bypass and static bypass.
3.
Pull out the bypass module (for 6-slot and 10-slot cabinet) , and dismantle monitoring,
static bypass unit (for 20-slot cabinet) and the load is powered through maintenance
bypass.
