User Manual – Rev BE AMETEK Programmable Power
MX Series 315
output relay will be opened after the UNDER VOLTAGE is applied
CURR Regen Current Limit
This is the regenerate current limit set point that the power source
tries to limit the current to that is fed back from the inverter. It is
different from the normal current limit set value shown in the
PROGRAM s cr e e n .
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SCREEN
Returns to previous screen.
9.11.4 SNK Setting Retention
Parameters set in the REGENERATE CONTROL screen are retained in non-
volatile memory between uses except for the STATE field which always powers
up in the OFF state. They are NOT part of the setup registers, however. Thus,
only one set of parameters is retained reflecting the last used settings.
9.11.5 SNK Remote Control
The same SNK parameters can also be programmed over any of the available
remote-control interfaces using SCPI commands. Refer to the MX Programming
Manual for details on programming syntax.
9.11.6 SNK and Phase Modes
On MX models operating in three phase mode, the protection shut down
mechanisms are implemented on a phase-by-phase basis. This means that
these parameters can be different for each phase. To set all parameters to the
same value for all three phases, use the PHASE button on the front panel to
select the ABC indication in the upper right corner of the LCD display. This will
allow you to set these values for all three phases. To set values by individual
phase, use the PHASE button to select either A, B, or C. The PHASE button
cycles between A, B,C and ABC.
For three phase EUT’s, it is generally recommended to set the same values for
all three phases.
9.11.7 Output Relay control while in Regen Mode
For some PV inverter tests, it may be necessary to ‘disconnect’ the inverter from
the grid (simulated by the power source). When the SNK state is ON, the
OUTPUT relay control (Output On/Off) will cause the output relay to open
without the output voltage being dropped first. It is important to make sure the
inverter is in a balanced state with respect to its load so minimal current flows
into the power source. If not, the relay of the power source will be hot switched
which should be avoided.
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