5.4 Details of Function Codes
5-206
Fig. 5.4-90
Assignment of pre-excitation EXITE (Function code E01 to E09, data = 32)
Turning this input signal
EXITE on starts pre-excitation. After the delay time for establishing magnetic flux
has elapsed, a run command is inputted. Inputting the run command terminates pre-excitation and starts
acceleration.
Use an external sequence to control the time for establishing magnetic flux.
Fig. 5.4-91
In V/f control (including auto torque boost and torque vector), pre-excitation function is not
operable. Substitute by using DC brake and starting frequency continue.
A transient phenomenon, which may occur when the loss of the machinery (load) is small, may
rotate the motor during pre-excitation. If a motor rotation during pre-excitation is not allowed in you
system, install a mechanical brake or other mechanism to stop the motor.
Even if the motor stops due to pre-excitation, voltage is output to inverter's output terminals [U], [V], and [W].
Electric shock may occur.
H86 to
H90
Reserved for particular manufacturers
H86 to H90 are reserved for particular manufacturers. Unless otherwise specified, do not access these
function codes.
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