Fuji Electric FRENIC MEGA G2 Series - Page 334

5.3 Description of Function Codes 5.3.2 E codes (Extension terminal functions)
5-150
<Switch to commercial power sequence selection)
With function code J22, it is possible to select whether to automatically switch to commercial power supply
operation when an inverter alarm occurs.
Table 5.3-8
J22 data
Sequence (when alarm occurs)
0
Inverter operation continues (alarm stoppage)
1
Automatic switching to commercial power supply operation
• The sequence functions normally without using “SW52-1”, even if the inverter main power is supplied
constantly.
• If using “SW52-1”, connect control power auxiliary input terminal [R0] and [T0]. If “SW52-1” turns OFF
without using [R0] and [T0], the control power supply will be lost. Furthermore, enable the instant restart
function by setting a value of 2 to 5 for function code F14 to prevent an LV alarm occurring when the
primary power supply is cut off.
• The sequence functions even when an alarm occurs, and may not function normally if the inverter is
damaged. Prepare an external emergency switching circuit for important equipment.
• By turning ON the commercial power supply side contactor (88) and inverter output side (secondary
side) contactor (52-2) simultaneously, the main power supply is input from the inverter output side
(secondary side), and depending on the situation, the inverter may be damaged. Use an interlock for
external circuits.
<Sequence example>
1) Standard sequence
Fig. 5.3-9