Allen-Bradley E300 User Manual

Rockwell Automation Publication 193-UM015E-EN-P - October 2015 621
Troubleshooting Chapter 12
Phase Loss
1. Missing supply phase 1. Check for open line (for example, blown fuse).
2. Poor electrical connection
2. Check all power terminations from the branch
circuit-protecting device down to the motor for
proper tightness. Make sure that the overload
connection to the contactor is secure.
3. Contactor operation 3. Inspect contactor for proper operation.
4. Improper parameter setting
4. Single-phase applications require that Single/
Three Phase (Parameter 176) is set to “single phase”.
Ground Fault
1. Power conductor or motor winding is
shorting to ground
1. Check power conductors and motor windings for
low resistance to ground.
2. Motor winding insulation is decayed
2. Check motor winding insulation for low
resistance to ground.
3. Foreign Object short 3. Check for foreign objects.
4. External ground fault sensor (core balance
current transformer) has improper
connection
4. Check cable connections.
Stall
1. Motor has not reached full speed by the
end of the Stall Enabld Time (Parameter
249)
1. Check for source of stall (for example, excessive
load, or mechanical transmission component
failure).
2. Improper parameter settings
2. Stall Enabled Time (Parameter 249) is set too low
for the application. Check to make sure that FLA
Setting (Parameter 171) is set correctly.
Jam
1. Motor current has exceeded the
programmed jam level
1. Check for the source of the jam (i.e., excessive
load or mechanical transmission component
failure).
2. Improper parameter settings
2. Jam Trip Level (Parameter 253) is set too low for
the application. Check to make sure that FLA Setting
(Parameter 171) is set correctly.
PTC
1. Motor stator windings overheated
1. Check for source of motor overtemperature (for
example, overload, obstructed cooling, high
ambient temperature, excessive starts/hour).
2. Thermistor leads short-circuited or broken 2. Inspect thermistor leads for short-circuit or open
Current Imbalance
1. Imbalance in incoming power 1. Check power system (for example, blown fuse).
2. Motor winding imbalance
2. Repair motor, or if acceptable, raise value of
Current Imbalance Trip Level (Parameter 261), CI
Trip Level
3. Motor idling
3. Raise value of Current Imbalance Trip Level
(Parameter 261) to an acceptable level.
4. Contactor or circuit breaker operation
4. Inspect contactor and circuit breaker for proper
operation.
Nonvolatile Storage
Fault
1. Firmware Downgrade corrupted:
Nonvolatile memory
1.Execute the Clear Command to the operating
Statistics, History Logs, and % TCU
2. Internal product failure 2. Consult the factory.
Hardware Fault
1. Firmware of sensing module is not
compatible with control module firmware
1. Verify firmware revisions of control module and
sensing module
2. Update firmware of control module to v2.0 or
higher
2. Hardware configuration failure
3. Consult the factory.
4. Verify that the Sensing, Control, and
Communication Module are connected properly.
5. Verify that connection pins between sensing
module and control module are not bent.
Trip Description Possible Cause Corrective Action

Allen-Bradley E300 Specifications

General

Brand	Allen-Bradley
Model	E300
Category	Other
Language	English