Multilin™ MM300
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Multilin™ MM300 - 1

Multilin™ MM300 Integrated Automation and Protection for Low Voltage Motors The MM300 integrates protection, control, automation, metering, diagnostics and multiple communication protocols in a rugged compact device for low voltage motor applications. Designed for NEMA and IEC Motor Control Centers, the MM300 delivers superior protection and control to extend equipment life and maximize process uptime. Protection and Control • Enhanced Thermal Modeling • Mechanical Jam & Stalled Rotor • Undercurrent & Underpower • Acceleration Time & Current Unbalance • Ground & Sensitive Ground Fault • Phase Overvoltage / Undervoltage • Thermistor & RTD Overtemperature • Full-featured protection for low voltage AC motors • Advanced automation capabilities for providing customized protection and integrated process control • Advanced FlexLogic™ reduces requirement for local controllers • Reduced space requirements through integration of multiple devices • Application flexibility with multiple I/O options and programmable logic options (FlexLogic™) • Enhanced troubleshooting tools including sequence of event records and waveform capture • Powerful communications including Serial, Ethernet, Profibus, and DeviceNet protocols • Small form factor and remote display options designed to fit in MCC buckets of various types • Universal device for all motor power ratings • No CTs required for less than 5A motor ratings • Thermistor input to monitor the ambient or motor temperature • Support for Hand Held Display (HHD) that provides a graphical color local interface allowing local operators to view and change setting files and quickly access relay diagnostic information Applications • Low Voltage three phase AC motors • MCC or stand alone panel mount applications • Process control and applications requiring Automation or Control i.e. conveyor systems or well recovery pumps • IEC or NEMA class motors and Motor Control Centers (MCCs) • System architecture requiring multiple simultaneous communications • Applications require full-voltage reversing or non-reversing, two-speed, wye-delta open transition, inverter, soft starter or autotransformer motor starting Automation • Programmable FlexlogicTM option • Starter Control & Process Interlocks • Programmable inputs and outputs • Undervoltage Auto-restart Metering & Monitoring • Metering - current, voltage, power, energy, frequency, RTD & Thermistor • Oscillography (analog values at 32 samples/ cycle and digital states) & Event Recorder (256 events) • Advanced device health diagnostics Communications • Two Wire RS485, RJ45 Ethernet • Programming Ports - USB, RS485 • Multiple Protocols (Modbus RTU or TCP/IP, Internally powered Profibus, ODVA compliant DeviceNet) & NPT EnerVista™ Softwares • Simplify setup and configuration • Strong

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Multilin™ MM300 - 2

MM300 Motor Management System biased to reflect the additional rotor heating. A programmable K factor setting allows the amount of derating to be adjusted. The MM300 is a digital motor protection and control system, designed for Low Voltage motor applications. Flexible and powerful, the MM300’s protection can be scaled to the specific requirements of your system. Hot / Cold Safe Stall Ratio This ratio defines the steady state level of thermal capacity used (TCU) by the motor. This level corresponds to normal operating temperature of a fully loaded motor and will be adjusted proportionally...

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Multilin™ MM300 - 3

MM300 Motor Management System RTD Thermal Capacity Used (%) Voltage Protection The MM300 comes standard with a single phase voltage input , providing single phase underpower, auxiliary undervoltage and optional undervoltage auto-restart functionality. Optional 3 phase voltage inputs offer the additional following protection elements: RTD Bias Center Point Maximum Stator RTD Temperature (C) • Phase Reversal • Three Phase Underpower • VT Fuse Failure Current Unbalance RTD Biasing does not replace the TCU calculated using the motor current. It provides a second and independent measure of...

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Multilin™ MM300 - 4

MM300 Motor Management System FlexLogic™ Designer Flexlogic and additional I/O options allow the MM300 to replace local programmable controllers in LV applications, like conveyor belts as in this example TM MM300 Dual Architecture Communication The MM300 supports the most popular industry standard protocols enabling easy, direct integration into HMI and electrical SCADA systems. Modbus RTU is provided standard with a RS485 networking port. The following optional protocols and communication ports are available • Fieldbus Protocol with dedicated port - ODVA Compliant DeviceNet - Internally...

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Multilin™ MM300 - 5

MM300 Motor Management System Viewpoint Monitoring Viewpoint Maintenance User Interface Viewpoint Monitoring is a simple-to-use and full-featured monitoring and data recording software package for small systems. Viewpoint Monitoring provides a complete HMI package with the following functionality: Viewpoint Maintenance provides tools that will create reports on the operating status of the relay, simplify the steps to download fault and event data, and reduce the work required for cyber-security compliance audits. Tools available in Viewpoint Maintenance include: The MM300 can be ordered...

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Multilin™ MM300 - 6

MM300 Motor Management System Technical Specifications PROTECTION ACCELERATION TIMER Pickup Iav > Icutoff Dropout Time delay 0.5 to 250.0 seconds in steps of 0.1 Timing accuracy ±500 ms or 1.5% of total time AUXILIARY UNDERVOLTAGE Pickup level 60 to 90% of NCV Time delay 1 to 60 seconds in steps of 1 Timing accuracy ± 500 ms CURRENT UNBALANCE Range 4 to 40% in steps of 1 Accuracy ±2% Time delay 1 to 60 seconds in steps of 1 s Timing accuracy ±500 ms FUSE FAILURE (RUNNING STATE ONLY) Timing <500 ms GROUND FAULT (CBCT OR RESIDUAL) Pickup level 0.5 to 15.0 A in steps of 0.1 (CBCT); 10 to 100%...

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