Vitzro VITAC 200 - Automatic Switchover Process; Automatic Switchover Steps and Status

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4. 2. 2. Automatic switchover function
If a power error is detected while monitoring the state of the commercial power and emergency power,
the power is automatically changed over, in order to resume power supply to load. If the controller is
in Auto mode (“Auto/Manual status display LED” red is on), the following switchover operation will be
performed.
If switchover is not performed normally, switchover will be attempted again three times. If switchover
still fails, it will be recognized as an ATS problem and the switchover failure LED will turn on.
Automatic switchover from the commercial power to the emergency power
If the emergency power is normal 3) when a problem occurs at the commercial power (abnormal power
4)
or non-supply
5)
while running with the commercial power, automatic switchover to the emergency power
side will be performed after the time specified in the “emergency switchover delay time setting”.
Performing automatic switchover can be checked using the “switch status display LED at the emergency
power side”, and LED changes as follows, depending on the switchover progress.
-
Switchover in progress :
The “switch status display LED at the emergency power side” blinks in green.
- Successful switchover
﹡
Switch status LED at the commercial power side : Changes from red to green.
﹡
Switch status LED at the emergency power side : Changes from green to red.
- Switchover failure
﹡
Switch status LED at the commercial power side : Keeps the red lamp on.
﹡
Switch status LED at the emergency power side : Keeps the greed lamp on.
﹡
Switchover failure LED at the commercial power side : Turns the red lamp on.
Automatic switchover from the emergency power to the commercial power
If the commercial power is normal when a problem occurs at the emergency power (abnormal power or
non-supply) while running with the emergency power, automatic switchover to the commercial power
side will be performed after the time specified in the “commercial switchover delay time setting”.
Performing automatic switchover can be checked using the “switch status display LED at the commercial
power side”, and LED changes as follows, depending on the switchover progress.
- Switchover in progress:
The “switch status display LED at the commercial power side” blinks in green.
- Successful switchover
﹡
Switch status LED at the commercial power side : Changes from green to red.
﹡
Switch status LED at the emergency power side : Changes from red to green.
- Switchover failure
﹡
Switch status LED at the commercial power side : Keeps the greed lamp on.
﹡
Switch status LED at the emergency power side : Keeps the red lamp on.
﹡
Switchover failure LED at the emergency power side : Turns the red lamp on.
3) Normal power: When no overvoltage, low voltage, over-frequency, or low-frequency problem occurred.
4) Abnormal power: When the overvoltage, low voltage, over-frequency, or low-frequency problem occurred.
5) No power supply: When 0 [V] voltage is measured because no power is supplied.