4-16
4-2 Function Mode
4
Functions
FV, FE, FI Sampling
•You can set the built-in filter applied to frequency setting signals of the external voltage/current
input.
•Helps remove noise in the frequency setting circuit.
•Set a larger data value if stable operation cannot be secured because of noise.
Note that the larger the data value is, the slower the response time. This parameter specifies a filter
time constant for a set value of 1 to 30 (× 2 ms).
•When "31." is selected, a filter time constant of 500 ms and a hysteresis of ±0.1 Hz are set. (Factory
default)
Multi-step Speed Operation Function
•You can set RUN speeds using codes and switch between the set speeds via the terminal.
•For multi-step speed operation, you can select either 4-terminal binary operation (with 16 steps
max.) or 7-terminal bit operation (with 8 steps max.).
* To switch to the 2nd/3rd control, allocate 08 (SET)/17 (SET3) to the desired multi-function input and then turn it
on.
•During multi-step speed operation, if frequency reference selection A001 is set to the terminal (01),
and the external analog input (FV, FE, FI) setting mode based on a combination of FV/FI selection
A005, FE selection A006, and the AT terminal is set to "reversible", the RUN command is inverted
when "main frequency reference +
auxiliary frequency reference" is less than zero.
Parameter No. Function name Data Default setting Unit
A016 FV, FE, FI sampling 1. to 30./31. 31. Time
Related functions A011 to A016, C001 to C008
Parameter No. Function name Data Default setting Unit
A019 Multi-step speed selection
00: Binary: 16-step selection with 4
terminals
01: Bit: 8-step selection with 7
terminals
00
A020 Multi-step speed reference 0
0.0/Starting frequency to
Max. frequency
6.0
Hz
A220
*2nd multi-step speed
reference 0
A320
*3rd multi-step speed
reference 0
A021 Multi-step speed reference 1
0.0
A022 Multi-step speed reference 2
A023 Multi-step speed reference 3
A024 Multi-step speed reference 4
A025 Multi-step speed reference 5
A026 Multi-step speed reference 6
A027 Multi-step speed reference 7
A028 to A035
Multi-step speed references
8 to 15
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