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Appendix E
Detailed CGCM-DLR Unit Tag Descriptions
234
Definite Time Over-frequency Outputs from CGCM Unit
• OvrFreqFlt - This tag is used to communicate the occurrence of an
Over-frequency Fault to the host Logix controller. When this tag is a 1, it
indicates that a fault has occurred. The tag is latched until the host Logix
controller resets it by setting the FltReset tag.
Definite Time Under-frequency Inputs to CGCM-DLR Unit
• UndrFreqFltOutEn - When this tag is a 1 in the configuration, and an
Under-frequency Fault occurs (as defined by the UndrFreqSetpt tag), the
Fault Relay is energized. When this tag is a 0 in the configuration, an
Under-frequency Condition has no effect on the Fault Relay.
• UndrFreqSetpt - This tag configures the generator under-frequency
setpoint at which the CGCM-DLR unit recognizes an under-frequency
condition is present and starts timing to trip based on the
Under-frequency Time Delay.
• UndrFreqTimeDly - This tag configures the time to
shutdown/annunciate once the generator Under-frequency setpoint has
been exceeded.
• EngineIdle – Setting this tag to 1 disables the under-frequency,
undervoltage, and Loss of PMG protections until the generator is at rated
speed.
Definite Time Under-frequency Outputs from CGCM
• UndrFreqFlt - This tag is used to communicate the occurrence of an
Under-frequency Fault to the host Logix controller. When this tag is a 1, it
indicates that a fault has occurred. The tag is latched until the host Logix
controller resets it by setting the FltReset tag.
Reverse Power Protection Inputs to CGCM-DLR Unit
• RevPwrFltOutEn - When this tag is a 1 in the configuration, and a
Reverse Power Fault occurs (as defined by the Rev_kW_Setpt tag), the
Fault Relay is energized. When this tag is a 0 in the configuration, a
Reverse Power Condition has no effect on the Fault Relay.
• Rev_kW_Setpt - This tag configures the generator reverse kW setpoint at
which the CGCM-DLR unit recognizes a reverse power condition is
present and starts timing to trip based on the Reverse kW fault Delay
setting.
• Rev_kW_TimeDly - This tag configures the time to
shutdown/annunciate once the generator reverse kW setpoint has been
exceeded.
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
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