Rockwell Automation 193-EC1_2_3_5, 193-ECPM,592-EC1_2_3_5 E3 and E3 Plus Solid-State Overload Relay User Manual - Manual (Page 221)

Rockwell Automation Publication 193-UM002I-EN-P - December 2011 221
Troubleshooting Chapter 12
Table 13: Trip/Warn LED Troubleshooting Procedures, Continued
E3 Plus Model EC5 Only
Trip Description Possible Cause Corrective Action
Over Reactive
Power Generated
(-kVAR) 1. Reactive power has exceeded the programmed over reactive
power generated level.
2. Improper parameter settings.
3. Relay is applied to the output of a variable frequency drive.
1. Check power system
2. Verify that current is flowing from the line side (L Terminals or
contactor mounting stabs) to the load side (T terminals) of the relay.
3. Inspect contactor or circuit breaker for proper operation.
4. Verify that Parameter 263, OVARG Trip Level, is set properly for the
application.
5. The E3 Plus model EC5 is not intended to be used on the output of a
variable frequency drive.
6. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Under Apparent
Power (kVA) 1. Apparent power has exceeded the programmed under
apparent power level.
2. Improper parameter settings.
3. Relay is applied to the output of a variable frequency drive.
1. Check power system
2. Inspect contactor or circuit breaker for proper operation.
3. Verify that Parameter 267, UVA Trip Level, is set properly for the
application.
4. The E3 Plus model EC5 is not intended to be used on the output of a
variable frequency drive.
5. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Over Apparent
Power (kVA) 1. Apparent power has exceeded the programmed over
apparent power level.
2. Improper parameter settings.
3. Relay is applied to the output of a variable frequency drive.
1. Check power system
2. Inspect contactor or circuit breaker for proper operation.
3. Verify that Parameter 271, OVA Trip Level, is set properly for the
application.
4. The E3 Plus model EC5 is not intended to be used on the output of a
variable frequency drive.
5. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Under Power
Factor Lagging
(-PF) 1. Power factor has exceeded the programmed under power
factor lagging level.
2. Improper parameter settings.
3. Relay is applied to the output of a variable frequency drive.
1. Check power system
2. Verify that current is flowing from the line side (L Terminals or
contactor mounting stabs) to the load side (T terminals) of the relay.
3. Inspect contactor or circuit breaker for proper operation.
4. Verify that Parameter 275, UPFLG Trip Level, is set properly for the
application.
5. The E3 Plus model EC5 is not intended to be used on the output of a
variable frequency drive.
6. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Under Power
Factor Leading
(+PF) 1. Power factor has exceeded the programmed under power
factor leading level.
2. Improper parameter settings.
3. Relay is applied to the output of a variable frequency drive.
1. Check power system
2. Verify that current is flowing from the line side (L Terminals or
contactor mounting stabs) to the load side (T terminals) of the relay.
3. Inspect contactor or circuit breaker for proper operation.
4. Verify that Parameter 283, UPFLD Trip Level, is set properly for the
application.
5. The E3 Plus model EC5 is not intended to be used on the output of a
variable frequency drive.
6. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Over Power
Factor Leading
(+PF) 1. Power factor has exceeded the programmed over power
factor leading level.
2. Improper parameter settings.
3. Relay is applied to the output of a variable frequency drive.
1. Check power system
2. Verify that current is flowing from the line side (L Terminals or
contactor mounting stabs) to the load side (T terminals) of the relay.
3. Inspect contactor or circuit breaker for proper operation.
4. Verify that Parameter 287, OPFLD Trip Level, is set properly for the
application.
5. The E3 Plus model EC5 is not intended to be used on the output of a
variable frequency drive.
6. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Power Value
Overflow (kW,
kVAR or KVA) 1. Power calculations have exceeded the limits of the E3 Plus
model EC5.
2. Improper parameter settings.
3. Relay is applied on a power system that is a too large to
properly calculate
1. Check power system
2.
V erify FLA setting, Parameter 28, is within the range specified for the
appropriate CT Ratio, Parameter 78.
3. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.