4 Electrical Installation
16
YASKAWA ELECTRIC
TOBP C730600 39A YASKAWA AC Drive-Option Card DI-A3 Installation Manual
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Input Timing
In order to activate the reference value set by the digital input as frequency reference the
controller has to activate the SET input using the timing illustrated in
Figure 6
. The
controller should switch off the SET signal and wait at least 1 ms before the changing digital
inputs. After changing the inputs it should wait at least 1 ms before enabling the SET signal.
The SET signal should be activated for at least 3 ms.
Figure 6
Figure 6 SET Input Timing
D0
㨪
DF
SIGN data
SET input timing
1 ms min.
3 ms min.
(SET is switched on)
Setting value change
Setting value change
1 ms min.
Reads setting