AMETEK BPS Series Programming Manual User Manual

Page 144

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AMETEK Programmable Power

BPS / MX / RS Series SCPI Programming Manual

144

Manual P/N 7003-961 Rev AA

6.2.5

Programming the Output Phase

You can control the phase of the AC voltage waveform relative to an external reference with:

PHASe <n>

which sets the phase in degrees. If <n> is positive, the voltage waveform leads the internal
reference or phase A value in three phase configuration.

Note:

For three phase clock and lock configurations, the PHASe command
sets the relative phase of B and C with respect to phase A.

6.2.6

Current Limit

This command will set the rms current limit, to set this limit is:

CURRent <n>

where <n> is the rms current limit in amperes.

If the load attempts to draw more current than the programmed limit, and the source is set
for constant current mode, the output voltage is reduced to keep the rms current within the
limit. Since the rms detection involves a filter time constant that is long compared to a single
output cycle, the response time of the rms current limit is not instantaneous.

The AC source can be programmed to turn off its output if the rms current limit is reached.
This protection feature is activated when the source mode is set for constant voltage mode.

Note:

The CURRent command is coupled with the VOLTage:RANGe. This
means that the maximum current limit that can be programmed at a
given time depends on the voltage range setting in which the unit is
presently operating. Refer to "Coupled Commands" for more
information.

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