Operation and Application
Copyright ©ITECH Electronic Co., Ltd.
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1.
Press
[Shift]
+
(System) and enter to the system menu interface.
2.
Select I/O -> Digital IO-4: SYNC.
Set one IT7800 power supply as a synchronization signal output to
Sync-
out
, and the others set to
Sync-out
.
【
Sync-in
】
: Synchronous input function, which is used to output frequency
lock or phase lock with the external signal. At this time, the machine
synchronizes the frequency or phase information input from the IO-4 pin.
【
Sync-out
】
: Synchronous output function, the IT7800 produces
synchronous signal to the outside, which is AC zero crossing pulse signal
sent from the IO port.
⚫
Frequency and phase lock configuration
1.
When defining the role of power supply as a synchronization signal input,
set frequency and phase synchronization Settings for the power supply.
On the Source Settings menu, select External Lock-Frequency Control.
External
Lock-
frequency control
Set the external Lock-frequency control mode
Status
Set the Lock-frequency ON/OFF state
Phase Delay
Set the phase deviation between the output
phase and the external I/O input signal: 0-
360°
Freq limit+
Set the frequency difference upper limit
between the output frequency and the
external I/O input signal.
Freq limit-
Set the frequency difference upper limit
between the output frequency and the
external I/O input signal.
Exception
Set the output mode when the frequency
lock fails:
⚫
Stop: stop output
⚫
Setting-freq: Output according to the
set frequency.
2.
Set Phase Delay for each of the five power supplies, so that the Angle
difference between each Phase of the six-phase power supply is 60°.When
setting, the Angle difference between the first power supply and the input
signal power supply is set to 60°, the Angle difference between the second
power supply and the input signal power supply is set to 120°, and so on.
