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ection
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S
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Crowbar Shutdown
The Crowbar Shutdown Circuit protects the generator rotor from overcurrent damage resulting from a shorted
DVR2000E power switch. During operation, if the eld voltage exceeds the setpoint and the power stage receives
no gating pulses for 1.5 seconds, the Crowbar Circuit activates and places a short-circuit across the DVR2000E
input power terminals. This protects the generator by blowing the input power fuse and removing operating power
from the device.
Generator Soft Start
The DVR2000E incorporates an adjustable soft start feature that controls the time for generator voltage to ramp
to the regulation setpoint. The ramp rate is adjustable from 1 to 120 seconds in 1 second increments through the
Windows® and Palm OS® communication software. The underfrequency feature is also active during soft start
and takes priority in control of the generator voltage. The default setting is 7 seconds.
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5
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