3-phase/series commands
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Chapter 13 3-phase/series commands
Three-phase / series function commands is a special command of
IT-M7721/IT-M7722/IT-M7723E, but it’s not suitable for
IT-M7721L/IT-M7722L/IT-M7723.
[SOURce:]NORMal:LINK
This command is used to connect / cancel two series units or three three-phase
units.
Syntax
[SOURce:]NORMal:LINK
Arguments
None
Query Syntax
[SOURce:]NORMal:LINK?
Returns
<CONNECTED|DISCONNECTED>
Note: The response time of this command is at least greater than 1 second.
The following three-phase / series function commands apply:
⚫ All machines must be successfully connected, that is, the [LINK] indicator
lights.
⚫ Without parameter A | B | C | ALL, only master A is set.
[SOURce:]NORMal:PHASe:DEGree
This command is used to set the angle difference of the three phases.
⚫ In 3-phase mode, the phase difference between each two power supplies
cannot be less than 5 degree.
⚫ In series mode, the phase difference is fixed at 180 degree and cannot be
changed.