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CHAPTER 3 CONTROL
32
Table 3-4. Flags Used for Inverter Control
Symbol
Use, setting
Set value
_CHNGST
Interrupt variable transfer request
Set in inverter output setting
Reset by INTTM7 processing
Reset: No transfer request
Set
: Transfer request
_MINIT
Selection of mode initialization processing
Set/reset by mode transition processing
Reset: Mode initialization unnecessary
Set
: Mode initialization necessary
_PCHNG
Determination of output setting change
Set in key setting
Reset in inverter output setting
Reset: No setting change
Set
: Setting changed
_BSVF
Transfer flag for _SVF change
Set in inverter output setting
Reset: V/f modulation ratio < 1
Set
: V/f modulation ratio
≥
1
_SVF
Indicates V/f modulation ratio.
Set and referenced in INTTM7 processing
Transfers _BSVF value
_10BIT
TM7 timer size (8/10 bit) selection
Set in variable initialization
Referenced in inverter output setting
Reset: TM7 is 8 bits.
Set
: TM7 is 10 bits.
_VFON
V/f control on/off selection
Set in variable initialization
Referenced in inverter output setting
Reset: V/f control not exerted
Set
: V/f control exerted
Table 3-5. Variables Used for Other Than Inverter Control (1/3)
Symbol
Bytes
Use, setting, and referencing
Set value
DMODE
Meaning of set value
10H
Target frequency
11H
Carrier frequency number
12H
Dead time number
NSET
1
Value set by key input
Set and referenced in key setting
03H
Frequency change rate number
DMODE
Meaning of minimum value
10H
Target frequency
11H
Carrier frequency number
12H
Dead time number
NSETMN
1
Minimum NSET value
Set and referenced in key setting
03H
Frequency change rate number
DMODE
Meaning of maximum value
10H
Target frequency
11H
Carrier frequency number
12H
Dead time number
NSETMX
1
Maximum NSET value
Set and referenced in key setting
03H
Frequency change rate number
SFOUT
1
Buffer used for setting target frequency
Set in key setting
Referenced in inverter output setting
Target frequency set in key setting
Example
10 Hz: 0AH (10)