Marathon Electric DVR 2000E+, User Manual

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Example: The application of a 1.25 Vdc signal will
result in a field current of 1.250 Adc.
When in VAR (EC+ only):
The application of a +/- 3.000 Vdc signal corre -
sponds to a percentage offset of up to +/- 30.0% to
the VAR set point.
Example: A programmed VAR regulation set point of
50.0% with an auxiliary input scale factor of 30.0%
and an auxiliary input of -1 Vdc will result in a –10.0%
offset to the VAR set point. Therefore the regulator
will regulate to 40.0% of rated VAR’s.
When in PF (EC+ only):
The application of a +/- 3.000 Vdc signal corre -
sponds to an offset of up to +/- 0.300 PU to the
power factor set point.
Example: A programmed power factor regulation set
point of 0.950 (lagging power factor) with an auxiliary
input scale factor of 30.0% and an auxiliary input of
-1 Vdc will result in a –0.100 offset to the power fac-
tor set point. Therefore the regulator will regulate
to a power factor of -0.950. In this case, the power
factor has gone from a lagging to a leading state.
Auxiliary – Control2
This mode allows modification of the regulation set
point by the application of a 4 mA to 20 mA current
control signal in terminals J1-1 (+) and J1-12 (-). This
mode requires the placement of a jumper across
terminals J1-5 and J1-8 (AUX_LOOP).
When in AVR3 or AVR1:
The application of a 4 mA to 20 mA input corre-
sponds to a percentage offset of up to +/- 30.0% to
the voltage set point.
Example: A programmed regulation set point of 480
Vrms, with an auxiliary input scale factor of 30% and
an auxiliary input of 9.33 mA will result in a –48 Vrms
offset to the set point. Therefore the regulator will
regulate to a reference voltage of 432 Vrms.
When in FCR:
The application of a 4 mA to 20 mA signal corre-
sponds to a -3.000 to +3.000 Adc field current set
point. The auxiliary input scale factor is disabled in
FCR mode. Note: Any field current reference less than
0.000 Adc will become 0.000 Adc.
Example: A field current set point of 1.000 Adc with
the application of a 10.67 mA signal will result in a
total field current of 0.500 Adc.
When in VAR (EC+ only):
The application of a 4 mA to 20 mA signal corre-
sponds to a percentage offset of up to +/- 30.0% to
the VAR set point.
Example: A programmed VAR regulation set point of
50.0% with an auxiliary input scale factor of 30.0%
and an auxiliary input of 9.33 mA will result in a
–10.0% offset to the VAR set point. Therefore the
regulator will regulate to 40.0% of rated VARs.
When in PF (EC+ only):
In the PF regulation mode, the application of a 4 mA
to 20 mA signal corresponds to an offset of up to +/-
0.300 PU to the power factor set point.
Example: A programmed power factor regulation set
point of 0.950 (lagging power factor) with an auxiliary
input scale factor of 30.0% and an auxiliary input of
9.33 mA will result in a –0.100 offset to the power
factor set point. Therefore the regulator will regulate
to a power factor of -0.950. In this case, the power
factor has gone from a lagging to a leading state.
Auxiliary – Meter
In this mode, the auxiliary input functions as a meter
with user-defined scaling. A voltage up to +/- 5.000
Vdc or a current of 4 mA to 20 mA may be applied to
terminals J1-1 (+) and J1-12 (-). The circuit imposes
a 2260-ohm burden on the DC source for voltage
input. The circuit imposes a 250-ohm burden on the
DC source for current input when a jumper is applied
across terminals J1-5 and J1-8 (AUX_LOOP). The
default scaling is 5000 PU counts for a +5.000 Vdc
voltage input and 5000 PU counts for a 20 mA cur-
rent input. The user provides further scaling through
DVRPortal™.
Example: For a scale factor of 0.20 units, the metered
value corresponding to a +5.000 Vdc voltage input
will be +100 units. The metered value corresponding
to a 20 mA current input will be +100 units.
Load Sharing
NOTE: The machine nameplate rated power, rated
power factor, CT Ratio and PT Ratio (if applicable)
MUST be entered in DVRPortal™ (and cannot be
Features and Protection
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