What does UNDER L mean on Eaton Relays and how do I fix it?
If 'UNDER L' appears on your Eaton Relays, it indicates breakage or malfunction in the process-driven equipment or drive shaft. To address this, lock out the motor starter for safety. Inspect shaft couplings and shaft keys for breakage. Also, check for any blockage of process material flow to the motor-driven equipment.
What does T BYPASS mean on Eaton 66D2032G01?
If your Eaton Relays display 'T BYPASS', it means the MP-3000 tripped but continued to detect current flowing to the motor for over a second after the trip. This could be due to a stuck or jammed contactor or breaker, or because someone bypassed the trip contact, keeping the contactor energized after the trip. You should immediately open the upstream source breaker or loadbreak switch, lock it out, and then diagnose the problem or locate the bypass in the starter.
What does TRANSIT mean on Eaton Relays?
If your Eaton Relays display 'TRANSIT', it means the starting current was still above the transition threshold P5L5 when the transition timer P5L6 delay expired. This trip occurs only if setpoint P5L7 is set to TRN I or TRN T/C. Verify the correctness of transition settings. Also, check the motor and load for any causes of slower than expected acceleration.
What does STEX MMM STEX T mean on Eaton 66D2032G01 Relays?
If your Eaton Relays display 'STEX MMM STEX T', it means that too many starts were performed in the user-set period of time. You should wait for the oldest start to clear from the stack. Observe the countdown on the display. Refer to setpoints P5L1 and P5L2 for more information.
What does RTDF 3W RTDF FIB URTDF mean on Eaton 66D2032G01?
If your Eaton Relays display 'RTDF 3W RTDF FIB URTDF', it means that RTD temperature information reporting through the designated medium has been lost. Check the wire or fiber channel medium for damage or disconnection. Also, check the URTD module for power or malfunction.
What does TBS MMM mean on Eaton Relays?
If your Eaton Relays display 'TBS MMM', it means restarting is blocked until the user-set time between starts has expired. Wait the indicated time before restarting. Note that the number of cold starts (NOCS) setpoint may suppress this blocking during the first n cold starts.
Explains the design principles for maximizing motor utilization and protection.
Details the adaptive overload protection using thermal models and RTDs.
Provides general guidelines for routing wires and connections.
Lists essential checks to perform before applying power.
Details checks to verify power supply and wiring after initial power application.
Guides on how to enter and verify relay setpoints.
Explains how to test output relay contacts for proper operation.
Lists the various protective functions offered by the MP-3000.
Details protection based on direct measurements like current and temperature.
Explains the I2t algorithm for modeling rotor and stator heating.
Describes the thermal model's bucket concept for tracking motor heat.
Details how the MP-3000 protects motors through various functions.
Explains the I2t algorithm and its setpoints for overload protection.
Describes how RTD inputs enhance overload protection and thermal modeling.
Illustrates how motor protection curves are derived from setpoints.
Details the function and settings for instantaneous overcurrent protection.
Explains the locked-rotor curves based on LRC and LRT setpoints.
Describes the ultimate trip function and its relation to service factor.
Explains underload protection setpoints for alarms and trips.
Details jam protection setpoints for alarms and trips.
Explains how load shedding prevents trips by reducing motor load.
Covers stator temperature protection using RTDs.
Explains protection against unbalanced currents and voltage.
Details the application of ground fault protection with a flux-canceling CT.
Guides on testing the trip relay output.
Provides troubleshooting steps for monitored equipment.
Explains alarm conditions and their resolution.
Details trip conditions and their causes and solutions.
Offers troubleshooting steps for MP-3000 specific issues.
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General