Marathon Electric DVR 2000E+ - Field Current Limiting Shutdown; Instantaneous Field over Current Shutdown; Regulator over Temperature Shutdown

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Marathon Electric (a division of RBC Manufacturing Corp.) reserves the right to change specications and this manual without notice.
Revised 06/2011
Field Current Limiting Shutdown
The DVR
®
2000E+hasaFieldCurrentLimitthatisadjustablefrom0.500to7.500A(defaultof6.5A)withanadjust-
able time delay that has a range of 1.0 to 10.0 seconds (default of 10.0 sec). If load conditions dictate that the field
current exceed the field current limit, the timer is started and the current is limited. The HMI will change from a PYN
status to an alarm status with alarm code A010. The Windows® communication software also displays this alarm
condition. If the current limiting condition continues for the duration of the timer (the default value is 10 seconds),
the regulator will stop providing excitation to the field and close the fault output contact. The HMI will change from
an alarm status to a fault status with fault code f010. The Windows® communication software also displays this
fault condition. This is a latching condition that can be reset by removing power from the regulator for at least 10
seconds or by momentarily shorting the EXCITATION_OFF circuit. When the DVR®2000E+ is powered up or the
EXCITATION_OFF short is removed following a Field Current Limit shutdown, the fault code f.0.1.0. will flash on the
HMI and the fault will be indicated in the Windows® communication software on the History tab of the Faults and
Alarms section of the monitor screen.
Instantaneous Field Over Current Shutdown
The DVR
®
2000E+ has a nominal Instantaneous Field Over Current Shutdown threshold of 11 Adc. If generator
field current exceeds this threshold, the regulator will stop providing excitation to the field and close the fault
output contact. The HMI will change from a PYN status to a fault status with fault code f009. The Windows® com-
munication software also displays this fault condition. This is a latching condition that can be reset by removing
power from the regulator for at least 10 seconds or by momentarily shorting the EXCITATION_OFF circuit. When
the DVR®2000E+ is powered up or the EXCITATION_OFF short is removed following an Instantaneous Field Over
Current Shutdown, the fault code f.0.0.9. will flash on the HMI and the fault will be indicated in the Windows® com-
munication software on the History tab of the Faults and Alarms section of the monitor screen.
Regulator Over Temperature Shutdown
The DVR®2000E+ has a fixed Regulator Over Temperature alarm threshold and a fixed fault threshold. If the
regulator temperature exceeds the alarm threshold, the HMI will change from a PYN status to an alarm status with
alarm code A007 until the temperature falls below the alarm threshold. If the regulator temperature exceeds the
fault threshold, the HMI will change from an alarm status to a fault status with the fault code f007. The Windows®
communication software also displays this fault condition. This is a latching condition that can be reset by remov-
ing power or by shorting the EXCITATION_OFF circuit from the regulator until the regulator’s internal temperature
has fallen below the fixed fault threshold. When the DVR®2000E+ is powered up or the EXCITATION_OFF short is
removed following a regulator over temperature shutdown, the fault code f.0.0.7. will flash on the HMI and the fault
will be indicated in the Windows® communication software on the History tab of the Faults and Alarms section of
the monitor screen.