5.4 Details of Function Codes
5-135
Details of
Function Codes
F codes
E01 to E09
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d codes
U codes
y codes
Chapter 5 Function Code
<Selection of Commercial Power Switching Sequence>
With the function code J22, whether switching to the commercial power driving automatically when an
inverter alarm occurs can be selected.
Table 5.4-72
Data for J22 Sequence (when an alarm is output)
0
Keep inverter-operation (Alarm stop)
1
Automatic switching to commercial power driving
- The sequence operates normally also when SW52-1 is not used and the main power of the
inverter is supplied at all times.
- When SW52-1 is used, connect the auxiliary input terminals [R0] and [T0] to the control
power supply. When SW52-1 is cut without using [R0] and [T0], the control power supply
turns off.
- The sequence operates normally even if an alarm occurs in the inverter except when the
inverter itself is broken. Therefore, for a critical facility, be sure to install an emergency
switching circuit outside the inverter.
- When both commercial side contactor (88) and the inverter output side (secondary side)
contactor (52-2) are simultaneously turned on, the main power is input from the inverter
output side (secondary side). In some cases, the inverter gets damaged. To prevent it, be
sure to set up an interlocking logic outside the inverter.
<Sequence Example>
1) Standard sequence
Fig. 5.4-54
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