Rockwell Automation Publication 1426-UM001J-EN-P - August 2019 173
Logging Chapter 6
Power Quality Event Codes
Power Quality Event Name Event Code Sub Event Name Sub Event Code Can Trigger Waveform 
Capture
Description
Voltage_Swell 1 V1_Swell 1 • Voltage Swell (4 trip points for V1)
V2_Swell 2 • Voltage Swell (4 trip points for V2)
V3_Swell 3 • Voltage Swell (4 trip points for V3)
Voltage_Sag 2 V1_Sag 1 • Voltage Sag (5 trip points for V1)
V2_Sag 2 • Voltage Sag (5 trip points for V2)
V3_Sag 3 • Voltage Sag (5 trip points for V3)
Imbalance 3 Voltage Imbalance 1  Voltage Imbalance
Current Imbalance 2   Current Imbalance
Power_Frequency    4 -- --   Power Frequency Deviation
Voltage_DC_Offset  5 V1_DC_Offset 1   V1 DC offset
V2_DC_Offset 2   V2 DC offset
V3_DC_Offset 3   V3 DC offset
Voltage THD 6 V1_THD 1   V1 THD
V2_THD 2  V2 THD
V3_THD 3  V3 THD
Current THD 7 I1_THD 1   I1 THD
I2_THD 2  I2 THD
I3_THD 3  I3 THD
IEEE1159_Over_Voltage 8 V1_Over_Voltage 1  V1 over voltage
V2_Over_Voltage 2  V2 over voltage 
V3_Over_Voltage 3  V3 over voltage
IEEE1159_Under_Voltage 9 V1_Under_Voltage 1   V1 under voltage
V2_Under_Voltage 2   V2 under voltage
V3_Under_Voltage 3   V3 under voltage
Voltage_TID 10 V1_Interharmonics 1   Voltage V1 total interharmonic 
distortion
V2_Interharmonics 2   Voltage V2 total interharmonic 
distortion
V3_Interharmonics 3   Voltage V3 total interharmonic 
distortion
Current_TID 11 I1_Interharmonics  1   Current I1total interharmonic distortion
I2_Interharmonics 2  Current I2 total interharmonic 
distortion
I3_Interharmonics 3   Current I3 total interharmonic 
distortion
I4_Interharmonics 4   Current I4 total interharmonic 
distortion