Rockwell Automation 1407-CGCM Combination Generator Control Module User Manual
Page 101
Rockwell Automation Publication 1407-UM001G-EN-P - April 2013
101
CGCM Unit Configuration Chapter 4
Current Tab
The Current tab is used to configure the CGCM unit parameters related to the
over-current protection function.
Refer to
for more information on setting the parameters in the
Current tab as well as the available time over-current characteristic curves.
Over-current
• Setpoint - Establishes the over-current threshold. When the generator
current exceeds this threshold, the CGCM unit starts timing toward a trip
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 are used by the over-current function of the CGCM unit. Tag
Ovr_I_Curve
stores this parameter.
• Over-current Time Dial – Selects a particular curve from the family of
curves 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 CGCM 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.