Rockwell Automation 1407-CGCM Combination Generator Control Module - Manual (Page 85)

Rockwell Automation Publication 1407-UM001G-EN-P - April 2013 85
CGCM Unit Configuration Chapter 4
• Validate and Graph button – Updates the graph in the OEL tab after
entering new values.
Related Parameters
• GenRatedExcI
• OEL_En tag in the Output table
UEL Tab
The UEL tab is used to configure the unit’s settings related to operation of the
Under-excitation Limiting (UEL) function. The values entered in this tab
establish break points in a piecewise linear curve that defines the characteristic
curve for this function. See the generator manufacturer’s data for the proper
setting information.
Refer to Chapter 3 for more information on the operation of the UEL function.
• Under-excitation Limiting Enable – Select this check box to enable
over-excitation limiting. Tag UEL_En in the configuration table stores
this parameter. In addition to selecting the check box, which sets the
UEL_En
tag in the configuration table, the UEL_En tag in the Output
(Scheduled Write) Data table must also be set to enable this function. In
Series B deices with firmware revision 3.3 or earlier, the UEL limiter
operates if either the enable box is checked or the UEL_En tag in the
Output (Scheduled Write) Data table is set.