Toshiba TOSVERT VF-A5 Series Option Manual page 11

TOSHIBA
E6580704
Note: The minimum hold time needed for reading is
approxim~tely
1 Sms when [
t
l::
F]
(input terminal response time selection) under
[Gr.SI:]
is set to [ /].
The minimum hold time for reading is proportional to the input response time
selection ([
1 l::
F] under [Gr
.S
l:: ]).
(7) Sample Connection (when a binary data write input switch is used)
VFAS VFAS VFAS VFAS
12-bit input
Binary Data Write
signals
Figure 3-1-6 When Performing 12-bit Input for Multiple Inverters
(setting different frequencies for two or more inverters)
12-bit
input signal
D
VFAS
Latch
AD
converter
Analogt input
......__ _ _ _ _ _ _ _ _. _ ____ _ _ _ _ _ _ _ _ _ Binary Data Write
signal
Figure 3-1-7 Using an AD Converter for 12-bit Input
Note: When there are frequent fluctuations in the digital output from an AD converter or the
like, connect a latch circuit and use a binary data write input switch to secure the
minimum hold time for reading.
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