Marathon Electric DVR 2000E+, User Manual

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auxiliary input, droop, step change and/or
the CAN bus are derived from this set point.
If there are no PT’s and the DVR
®
sensing
leads are connected line-to-line, the desired
generator output voltage is identical to the
Regulator Voltage Set Point. If the DVR
®
sensing leads are connected midpoint-to-
midpoint of a series wye configuration, the
desired generator output voltage is twice the
Regulator Voltage Set Point.
If there are PT’s in the sensing circuit, the
desired generator output voltage is deter-
mined by the multiplication of the PT ratio
and the Regulator Voltage Set Point.
• Maximum External Contact Adjust is the
maximum adjustment percentage of the UP
and DOWN contact inputs. In FCR Mode,
field current is adjusted from a fixed mini -
mum of -3.000 Adc to a fixed maximum of
+3.000 Adc using the UP and DOWN con -
tacts.
• Field Current Set Point is editable in FCR
Regulation Mode. This value represents the
desired field current of the DVR
®
.
• Under Frequency Knee is the value of fre-
quency below which the regulator operates
in a Volts-per-Hertz mode. Refer to Section
4 – Features and Protection for a detailed
description of Generator Under Frequency.
• Slope Multiplier is the factor applied to the
base slope for voltage roll-off with respect to
frequency in a V/Hz mode. Refer to Section
4 – Features and Protection for a detailed
description of Generator Under Frequency.
• Droop is the maximum percentage of
Regulator Voltage Set Point allowed for
adjustment of voltage during load sharing.
Refer to Section 4 – Features and Protection
for a detailed description of Load Sharing.
• PT Ratio is the value of the potential trans-
former ratio of the system. The generator
output voltages displayed in the Generator
tab of the Metering panel are equivalent to
the voltages displayed in the Regulator tab
multiplied by this value.
Example: A PT with a 13,200 Volt primary
rating and a 240 Volt secondary rating would
have a PT Ratio of 55.
• CT Ratio is the value of the current trans-
former ratio of the system. The generator
output currents displayed in the Generator
tab of the Metering panel are equivalent to
the currents displayed in the Regulator tab
multiplied by this value.
Example: A CT with an 800 A primary rating
and a 5 A secondary rating would have a CT
ratio of 160 .
Auxiliary Input Configuration (4c)
This panel contains controls for modifying the func-
tionality of the auxiliary input.
• Auxiliary Input Type configures the auxiliary
input as a set point modifier, a meter input or
disabled. Refer to Section 4 – Features and
Protection for a detailed description of the
Auxiliary Input function.
• Aux. Meter Scale Factor is used only when
the auxiliary input type is configured as
“Auxiliary Meter.” This value scales the aux -
iliary input. Refer to Section 4 – Features and
Protection for a detailed description of the
Auxiliary Input function.
• Aux. Control Scale Factor is used when the
auxiliary input port is configured as “Auxiliary
Control1” or “Auxiliary Control2” This value
scales the auxiliary input. Refer to Section
4 – Features and Protection for a detailed
description of the Auxiliary Input function
DVRPortal
™
Graphical User Interface (GUI)
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