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• If the “Frequency point selection” function is disabled (=)
The operation frequency (frequency command value) of the inverters are calculated using the fol-
lowing equations, with the received data in the following equation used as the data received from
the master inverter when inverters are operated under the control of a master inverter (inter-drive
communication), or with the received data in the following equation used as the data received from
the computer when inverters are operated under the control of a computer (computer-linked opera-
tion).
10000
FHsideSlave(%)datarecieveSlave
)Hz(fc
×
=
(Hz)
Example: Unit:1=0.01Hz
Maximum frequency Operation frequency command value
Master (Fc) 100.00Hz (10000) 50.00Hz (5000)
Slave 1 90.00Hz (9000) 45.00Hz (4500)
Slave 2 80.00Hz (8000) 40.00Hz (4000)
%
FHsideMaster
fcsideMaster
(%)fcdatasendMaster 505000
10000
100005000
===
×
=
×
：
10000
Hz)Hz(fc:Slave 454500
10000
90005000
1 ==
×
=
Hz)Hz(fc:Slave 404000
10000
8005000
2 ==
×
=
0
• If the “Frequency point selection” function is enabled (≠)
When inverters are operated under the control of a mater inverter, the operation frequency (fre-
quency command value) of the slave inverters are calculated using the following equations.
When inverters are operated under the control of a computer, read “command from the master
inverter” in the following equations as “command from the computer.”
frequencyintPointPo(%)commandMaster
intPointPo
frequencyintPofrequencyintPo
)Hz(fc 11
12
12
）＋（ −×
−
−
=
(Hz)
Example: Units: Frequency unit 1 = 0.01Hz, Point setting unit 1 = 0.01%
Maximum
frequency
()
Point 1
setting
()
Point 1 fre-
quency
()
Point 2 set-
ting
()
Point 2
frequency
()
Frequency
(Fc)
Master (Fc) 100.00Hz
(10000)
50.00Hz
(5000)
Slave 1 100.00Hz
(10000)
0.00%
(0)
0.00Hz
(0)
100.00%
(10000)
90.00Hz
(9000)
45.00Hz
(4500)
Slave 2 100.00Hz(1
0000)
0.00%
(0)
0.0Hz
(0)
100.00%(10
000)
80.00Hz
(8000)
40.00Hz
(4000)
Data sent by the master inverter
%
FHsideMaster
fcsideMaster
(%)fc:datasendMaster 505000
10000
100005000
===
×
=
×
10000
Both slaves 1 and 2: Result of a conversion made on the slave side
Hz
FHsideSlavedatareceiveSlave
)Hz(fc 505000
10000
100005000
==
×
=
×
=
10000
(%)
Both slaves 1 and 2: Result of a conversion to % made prior to a conversion to point frequency
%
FHsideSlave
)Hz(fc
(%)fc 505000
10000
100005000
==
×
=
×
=
10000
Results of conversions to point frequency (for the equation used, see above.)
Hz)()Hz(fc:Slave 454500005000
010000
09000
1 ==−×
−
−
= ＋
Hz)()Hz(fc:Slave 404000005000
010000
08000
2 ==−×
−
−
= ＋
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