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 219)

Rockwell Automation Publication 193-UM002I-EN-P - December 2011 219
Troubleshooting Chapter 12
Table 11: Trip/Warn LED Troubleshooting Procedures, Continued
➊ Series C and later
E3 Plus Model EC5 Only
Trip Description Possible Cause Corrective Action
Current
Imbalance 1. Imbalance in incoming power
2. Motor winding imbalance
3. Motor idling
4. Contactor or circuit breaker operation 1. Check power system (i.e. blown fuse).
2. Repair motor, or if acceptable, raise value of Parameter 51, CI Trip
Level.
3. Raise value of Parameter 51, CI Trip Level, to an acceptable level.
4. Inspect contactor and circuit breaker for proper operation.
Comm Fault 1. Communication disruption 1. Check the DeviceNet cabling for a wiring disconnection.
Comm Idle 1. Programmable controller processor set to the “program”
mode.
1. Reset trip after the programmable controller process is returned to
the “run” mode.
NonVol Memory
Fault 1. Internal product failure 1. Consult the factory.
Hardware Fault
(trip) 1. Hardware configuration failure 1. Verify that the input terminals (1,2,3,4,5 or 6) are not shorted at the
PTC terminals (IT1, IT2).
2. Consult the factory.
Configuration
Fault (warning) 1. Parameter 27, Single/Three Ph, is set to single phase and
current is being sensed in phase L3 during motor operation.
2. FLA setting is outside the “legal” range, as determined by the
corresponding CT Ratio setting.
1. For three-phase applications, Parameter 27, Single/Three Ph, should
be set to “three-phase”; for single-phase applications, verify that
current iflowing through L1 and L2 only.
2. See Table 41 - and program the FLA setting within the range
specified.
Remote Trip 1. Contact closure of remote sensor (e.g., vibration switch). 1. Take corrective action to address the issue that caused the sensor to
actuate.
2. Check sensor for proper operation.
3. Check wiring.
PM - # Starts ➊
(warning)
1. Parameter 96, Starts Counter, is equal to or greater than the
value set in parameter 101, PM -# Starts.
1. Set parameter 104, Clear Queue, to reset parameter 96, Starts
Counter.
PM – Oper.
Hours
➊
(warning)
1. Parameter 95, Elapsed Time, is equal to or greater than the
value set in parameter 102, PM – Oper. Hours.
1. Set parameter 104, Clear Queue, to reset parameter 95, Elapsed Time.
Blocked
Start/Start Inhibit
➊
1. The number of starts count within the past hour period equals
the value set in the parameter 99, Starts/Hour. 2. The time
expired since the most recent start is less than the value set in
the parameter 100, Starts Interval.
1. Check parameter 98, Time to Start, and wait that amount of time, or
change the configuration to allow more starts/hour. 2. Check
parameter 98, Time to Start, and wait that amount of time, or change
the configuration to shorten the interval between starts.
Voltage Input
Module
Hardware Fault 1. The Voltage Input Module is not properly communicating to
the E3 Plus relay
1. Check the ribbon cable that connects Voltage Input Module to the E3
Plus relay. If the cable is damaged, please order 193-NCEC5CNT for a
replacement cable.
2. Check the Voltage Input Module for damage. If damaged, please
order 193-NVEC5VIM for a replacement Voltage Input Module.
Under Voltage L-L 1. L-L Voltage has exceeded the programmed under voltage
level
2. Improper parameter settings
1. Check power system
2. Inspect contactor and circuit breaker for proper operation.
3.
Verify that Parameter 217, UV Trip Level, is set properly for the
application.
4. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Over Voltage L-L 1. L-L Voltage has exceeded the programmed over voltage level
2. Improper parameter settings 1. Check power system
2. Inspect contactor and circuit breaker for proper operation.
3. Verify that Parameter 221, OV Trip Level, is set properly for the
application.
4. Check to ensure that Parameters 289 and 290, PT Primary and PT
Secondary , are set properly if applicable.
Voltage
Unbalance 1. Unbalance in incoming voltage
2. Contactor or circuit breaker operation 1. Check power system
2. Inspect contactor and circuit breaker for proper operation.
3. Verify that Parameter 231, V UnbalTripLevel, is set properly for the
application.
Phase Rotation 1. The 3-phase voltage rotation changed (e.g., ABC to ACB) 1. Check power system
2. Inspect contactor and circuit breaker for proper wiring.
3. Verify that Parameter 224, Ph Rot Trip, is set properly for the
application.
Under Frequency 1. Voltage frequency has exceeded the programmed under
frequency level
2. Improper parameter settings
3. Relay is applied to a variable frequency drive that is running
outside its measurement range
1. Check power system
2. Inspect contactor, circuit breaker, or variable frequency drive for
proper operation.
3. Verify that Parameter 235, UF Trip Level, is set properly for the
application.
Over Frequency 1. Voltage frequency has exceeded the programmed over
frequency 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 239, OF 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.