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Chapter 4
CGCM-DLR Unit Configuration
114
Current Page
The Current page is used to configure the parameters that are related to the
over-current protection function.
See
Appendix A
for more information on setting the parameters in the Current
tab and the available time over-current characteristic curves.
Over-current
• Setpoint - Establishes the over-current threshold. When the generator
current exceeds this threshold, the CGCM-DLR unit starts timing toward
a trip that is based on the selected over-current curve, voltage-restraint
setting, and time dial setting. Tag Ovr_I_Setpt stores this parameter,
expressed in percent of rated generator current.
• Over-current Curve - Selects the time over-current characteristic curve
that is used by the over-current function. Tag Ovr_I_Curve stores this
parameter.
• Over-current Time Dial – Selects a particular curve from the family of
curves that are contained in the selected over-current characteristic curve.
Tag Ovr_I_TimeDial stores this parameter.
• Over-current Voltage Restraint setpoint - This setting establishes the
generator voltage threshold below which the unit automatically reduces
the selected time over-current setpoint. Tag Ovr_I_VrestSetpt stores this
value, expressed as a percent of rated generator voltage. The over-current
setpoint is reduced to the same percentage as the voltage restraint
threshold.
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
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