5.4 Details of Function Codes
5-127
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
<Operation chart>
- When the motor speed remains almost the same during coast-to-stop
Fig. 5.4-46
- When the motor speed decreases significantly during coast-to-stop (with the current limiter activated):
Fig. 5.4-47
- Secure more than 0.1 second after turning on the "Switch to commercial power" signal before
turning on a run command.
- Secure more than 0.2 second when both the "Switch to commercial power" signal and run
command are concurrently on.
- If an alarm has been issued or BX has been on when the motor drive source is switched from
the commercial power to the inverter, the inverter will not be started at the commercial power
frequency and will remain off. After the alarm has been reset or BX turned off, operation at the
frequency of the commercial power will not be continued, and the inverter will be started at the
ordinary starting frequency.
When switching from the motor drive source from the commercial power to the inverter, be
sure to reset BX before the "Switch to commercial power" signal turns off.
- When switching the motor drive source from the inverter to commercial power, adjust the
inverter's set frequency at or slightly higher than that of the commercial power frequency
beforehand, taking into consideration the motor speed down during the coast-to-stop period
produced by switching.
- Note that when the motor drive source is switched from the inverter to the commercial power,
a high inrush current will be generated, because the phase of the commercial power usually
does not match the motor speed at the switching. Make sure that the power supply and all the
peripheral equipment are protected by installing appropriate equipment for this inrush current.
- When "Restart after momentary power failure" (F14 = 3, 4, 5) is selected, keep BX on to
prevent the inverter from restarting after a momentary power failure during commercial power
driven operation.
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