Eaton XN-322-8AO-U2 Analog output module

The MP-3000 is an advanced microprocessor-based motor protection

relay that is easy to set up and use.  It monitors, controls, and protects

motors against overload, thermal damage to rotor or stator, electrical

faults, and excessive starting, and many process equipment failures.

Advanced algorithms and thermal models give safe operation over a

wide range of conditions.

The MP-3000 protects 50 or 60 Hz three-phase motors of any size

or voltage level.  It can protect induction or synchronous motors, with

or without RTDs.  The relay is frequently installed in motor starters or

switchgear.

The MP-3000 Motor Protection Relay provides the following pro

tection, alarm, and control functions.  ANSI device numbers are in

parentheses.

Protection

Intel-I-Trip I2t Overload Protection (49/51)

Locked-rotor protection (49S/51)

Ultimate trip current (51)

Negative sequence current/phase unbalance and reverse

phase protection (46)

Instantaneous overcurrent trip (50)

Ground fault protection (50G)

RTD trip with accessory URTD module (49/38)

Underload trip power and current (37)

Starts per time limit (66)

Jam or stall trip (51R)

Zero-speed switch trip (14)

I2t Auto or manual reset (86)

Fail-safe or non-fail-safe trip modes

alarming

Ground fault

I2t Overload

Jam / Stall

Underload

Phase unbalance

RTD temperature with URTD module

Control    features

Transition control for reduced voltage starters

Incomplete sequence (process feedback) detection and trip

Permits user-set number of cold starts

Limits number of starts per time

User sets minimum time between starts

Antibackspin (time from stop to next start) delay

Current-based process load shedding and restoration

Long acceleration timing feature

Motor stop input for synchronous motor and condenser

applications

Remote trip input

Differential trip input

Emergency override clears blocks to motor restarting (if

enabled)

Program settings while motor runs, with controlled change

over (if enabled)

Disarmed mode for commissioning and checking in a

running process