Eaton Cutler-Hammer MP-3000 User Manual (English)

Questions and Answers:

D
Daniel SmithAug 22, 2025
What to do if Eaton Relays show IOC GND FLT?
- C
  Christine SandovalAug 22, 2025
  If your Eaton Relays display 'IOC GND FLT', it indicates an electrical fault (short circuit) in the insulation of the motor or connecting circuits. As a precaution, shut down and lock out the motor. It's crucial to seek expert assistance to evaluate the motor's condition and determine the necessary repairs. Avoid attempting a restart without a professional assessment. After the motor has been repaired or replaced, remember to inspect the fuses in the starter and replace any that have blown.
C
Charles LittleAug 23, 2025
What does GND FAULT mean on Eaton Cutler-Hammer MP-3000 Relays and how to fix it?
- B
  bianca56Aug 25, 2025
  A 'GND FAULT' on Eaton Relays signals an insulation failure leading to ground current leakage. This situation poses a danger. Immediately stop and isolate the motor to prevent further damage or more hazardous conditions. It is essential to get an expert evaluation of the motor's insulation condition.
K
Kimberly JohnsonAug 25, 2025
What does PH UNBAL mean on Eaton Cutler-Hammer MP-3000 and what should I check?
- L
  Luke ParrishAug 26, 2025
  If you see 'PH UNBAL' on your Eaton Relays, it means there's a phase unbalance, possibly due to source voltage unbalance from a remote fault or single-phase loading, or single phasing of the motor. Check the voltage balance and the integrity of feeder connections. Also, inspect the fuses in the starter. Do not attempt to restart until the cause of single-phasing is found.
K
kirsten34Aug 27, 2025
What should I do if my Eaton Cutler-Hammer MP-3000 display WD TEMP MB TEMP LB TEMP AX TEMP?
- B
  Brandi CaseyAug 27, 2025
  If your Eaton Relays show 'WD TEMP MB TEMP LB TEMP AX TEMP', it means the temperature is at or above the alarm setpoint value. Check the specific value in Monitor mode to find the cause. Stator heat could be from overload or blocked cooling airflow. Bearing heat often means a failure is coming or there's not enough lubrication.
C
clopezAug 27, 2025
What does JAM mean on Eaton Cutler-Hammer MP-3000 Relays and how to resolve it?
- F
  Felicia GrayAug 27, 2025
  If 'JAM' appears on your Eaton Relays, it indicates a malfunction or jam in the driven process equipment. Ensure safety by locking out the motor starter and then inspect the process equipment to identify and resolve the jam.
M
Melissa EdwardsAug 29, 2025
What does MB TEMP LB TEMP WD TEMP AX TEMP mean on Eaton Cutler-Hammer MP-3000 Relays?
- M
  Monica MurrayAug 29, 2025
  When Eaton Relays display 'MB TEMP LB TEMP WD TEMP AX TEMP', it suggests a failure in the bearings or bearing lubrication system. Also, check the RTD integrity. Sustained overloading of the motor or cooling air flow blockage can also cause this. If the RTD is okay, the bearing will likely need replacement. Inspect the airflow path, look for causes of abnormal loading, and check for abnormal supply voltage.
B
Breanna PalmerAug 30, 2025
What does %I2T mean on Eaton Cutler-Hammer MP-3000 and how can I fix it?
- A
  ajonesAug 30, 2025
  The '%I2T' message on Eaton Relays indicates that the thermal-model bucket level has exceeded the alarm setpoint, which is between 60 to 100% of the trip level. You should determine if the motor is experiencing a larger than expected sustained load. Check for any unbalance in supply currents or voltages that could cause negative-sequence heating. Also, verify the system voltage level and inspect for cooling air blockage or abnormal ambient conditions. Monitor the bucket level in Monitor mode to ensure it doesn't continue rising to the trip level.
B
Brandi HuntAug 31, 2025
What to do if Eaton Relays show PH REVRS?
- H
  Heather BlairAug 31, 2025
  If Eaton Relays display 'PH REVRS' at startup, the phase sequence is reversed. Since the MP-3000 is set for a non-reversing starter, the motor should never run backwards. A possible cause is swapped phases in the incoming source. Correct this by swapping two of the incoming power leads (L1, L2, or L3). Another cause could be swapped phases in the CT wiring. Check the wiring at both the CT and relay ends. You can change the MP-3000 current transformer wiring by swapping the current transformer wiring terminals H1B-H2B with H1C-H2C. Clearly mark the new wiring and update the drawings for future reference. Also, check the motor for the correct direction of rotation at the moment of starting.
Z
zellisSep 2, 2025
What does STEX A mean on Eaton Cutler-Hammer MP-3000 and what is the solution?
- J
  Joel PhillipsSep 2, 2025
  If your Eaton Relays display 'STEX A', it means that all of the allowed starts within the set time period have been used. To resolve this, wait the number of minutes shown on the display before attempting to restart the system.
J
Jennifer ColemanSep 3, 2025
Why does my Eaton Cutler-Hammer MP-3000 display LRC/I2T?
- J
  Jason ScottSep 3, 2025
  If your Eaton Relays display 'LRC/I2T', it means the thermal-model bucket has reached the trip level. Note that this trip cannot be reset until the thermal-model bucket has cooled below the user-set I2T alarm level. Determine if the motor is experiencing a larger than expected sustained loading. Check for unbalance in supply currents or voltages causing negative-sequence heating. Also, check for abnormal system voltage level and inspect for cooling air blockage or abnormal ambient conditions.

Eaton Cutler-Hammer MP-3000 Specifications

General

Brand	Eaton
Model	Cutler-Hammer MP-3000
Category	Relays
Language	English

Summary

Introduction to the MP-3000 Motor Protection Relay

General Overview of MP-3000

Provides a general description of the MP-3000 relay, its capabilities, and target applications.

MP-3000 Enhancements Over IQ1000 II

Details the specific improvements and new features incorporated in the MP-3000 compared to the IQ1000 II.

Product Overview of the MP-3000 Relay

General Product Overview

Describes the physical form factors, input/output capabilities, and user interface.

Optimum Motor Protection Design

Explains the design philosophy focused on maximizing motor utilization and protection.

Intel-I-Trip Adaptive Overload Protection

Details the adaptive I2t motor overload protection using thermal models.

Understanding the MP-3000 Operator Panel

Operator Panel General Description

Provides an overview of the faceplate's display, LEDs, and pushbuttons.

Default Mode Operation

Describes the normal operating status displays and system messages.

Monitor Mode for Real-Time Data

Explains how to view real-time motor operating parameters and data.

View Settings and Program Mode

Covers modes for viewing and changing relay setpoints.

History Mode for Event Review

Details how to access and review stored historical motor data.

Log Mode for Event Records

Describes how to review logged motor events chronologically.

Programming the MP-3000 Relay

General Programming Information

Introduces the program mode for changing MP-3000 setpoints.

Conditional Setting Ranges and Errors

Explains setpoints with linked ranges and potential configuration errors.

Viewing Setpoints Without Modification

Describes the View Settings mode for reviewing programmed setpoints.

Installation and Wiring Procedures

MP-3000 Mounting Guidelines

Covers physical mounting requirements for the MP-3000 relay and modules.

General Wiring Practices

Provides general guidelines for routing control, RTD, and communication wires.

Current Transformer (CT) Wiring

Details critical aspects of connecting current transformers for accurate measurement.

Output Contact Wiring Configuration

Explains wiring for output relays and their programmable functions.

AC Supply Wiring Connections

Covers the requirements for connecting the AC power supply to the relay.

URTD Module Wiring

Provides instructions for wiring the Universal RTD Module.

MP-3000 Relay Startup Procedures

General Startup Overview

Lists procedures for applying AC power to the MP-3000 for the first time.

Pre-Power Checks for Safe Startup

Checklist of safety precautions and wiring verification before applying power.

Initial AC Power Supply Checks

Steps for verifying the AC power supply voltage before energizing the relay.

Entering Relay Setpoints for Operation

Guidance on carefully entering and verifying relay setpoints.

Motor Thermal Protection Basics

General Principles of Motor Protection

Describes how MP-3000 hardware and software protect motors.

MP-3000 Protective Functions

Lists the various protective functions offered by the MP-3000.

Thermal-Model and Rotor Temperature Protection

Explains thermal modeling, sequence currents, and rotor heating effects.

Thermal Bucket Operation

Details the thermal model's accumulator (bucket) for tracking motor heat.

Applications and Settings for MP-3000

General Application and Settings Guidance

Provides engineering guidance for MP-3000 functions and setpoints.

Motor Protection Strategies

Details various motor protection methods including thermal modeling.

Thermal Modeling and Overload Protection

Explains I2t algorithm and thermal bucket calculations without RTDs.

Overload Protection Using RTDs

Describes how RTDs enhance motor overload protection accuracy.

Motor Protection Curve Definition

Explains how protection curves are generated from setpoints and motor data.

Load Shedding Function Implementation

Details the application of load shedding to prevent motor trips.

Unbalance Protection Mechanisms

Explains protection against unbalanced currents and their effects.

Data Communications for MP-3000

General Data Communication Capabilities

Overview of communication with host systems via PONI modules.

Selecting the Appropriate PONI Module

Describes various PONI types for network interface options.

Connecting PONI to Network or Host

Instructions for connecting PONI modules to host systems and networks.

Emulating IQ 1000 II Communications

Details the mode for communicating with older IMPACC systems.

Testing Procedures for the MP-3000 Relay

General Testing Guidelines

Procedures for bench checkout and input/output verification.

Identifying Functions to Test

Specifies which relay functions should be tested.

Testing Relays with a Running Motor

Guidelines for testing outputs while the motor is running.

Testing the Trip Relay Output

Step-by-step procedure for testing the trip relay.

Testing the Alarm Relay Output

Step-by-step procedure for testing the alarm relay.

Troubleshooting the MP-3000 System

General Troubleshooting Approach

Introduction to troubleshooting procedures and areas.

Operator Panel Operations and Troubleshooting

Guidance on using the operator panel for monitoring and diagnostics.

Troubleshooting Monitored Equipment

Assisting in localizing problems based on MP-3000 output.

Troubleshooting Alarm Conditions

Diagnosing and resolving alarm conditions indicated by the relay.

Troubleshooting Trip Conditions

Diagnosing and resolving trip conditions indicated by the relay.

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