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102
The following shows the time chart where the speed search command is input.
Notes:
7.
Search commands with ser values of 9 and 10 ( e.g. Pn-32 = 9, Pn-33 = 10)
8.
Determine a sequence so that FWD/REV run command enters at the same time or later than search
command.
3. The minimum baseblock time is a time when the inverter output is shut off during the motor remaining
voltage occurrence. Setting this time shorter can reduce the time until speed search start, but an
inverter protective function such as overcurrent (OC) may operate because of the motor remaining
voltage and the like. Therefore, do not reduce the time unnecessarily.
FWD (REV) RUN
SEARCH COMMAND
MAX. FREQUENCY OR
FREQUENCY REF. VALUE
WHEN
SEARCH COMMAND IS INPUT
RETURN TO THE
VOLTAGE AT
NORMAL RUNNING
OUTPUT FREQUENCY
VOLTAGE AT SPEED SEARCH
OUTPUT VOLTAGE
SPEED SEARCH
AGREED SPEED
DETECTION
MIN. BASEBLOCK TIME
<Example of Sequence>
RELAY
1
RELAY
2
RELAY
1
SEARCH COMMAND
F
WD/REV RUN COMMAND