Protection Relays and Controls Motor Protection–Advanced MPS SERIES (PGR-6300) Motor Protection System Description PHASE CT GF CT PHASE CT M PHASE CT RTD x 8 1 MPU-CIM MPS-RTD (Current Input Module) (Temperature Input Module) The MPS Motor Protection System monitors voltage, current, and temperature to provide a comprehensive package of 22 protective functions. The MPS is a modular system with integrated protection, motor control, metering, and data-logging functions. This system is typically used to provide protection for three-phase low- and medium-voltage, mediumto high-horsepower induction motors. 1 Operator Interface (MPS-OPI) g g MPU-32 g (Motor Protection Relay) L1 g L2 g g g g Large, bright, 4 x 20 vacuum-fluorescent display Display metered values Access set points Powered by Control Unit Panel mount or attach directly to Control Unit Remote mounting (1.2 km or 4000 ft maximum loop length) 1/2 DIN size Hazardous-location certified 2 Control Unit (MPS-CTU) 2 g g Simplified Circuit Diagram A B PHASE CT g g g GF CT g PHASE CT M PHASE CT g g RTD x 8 g g MPS-RTD MPS-CTU L1 L2 (Control Unit) C 2 Current inputs—5-A or 1-A secondary phase current transformers Voltage inputs—up to 600 V without PTs Earth-leakage input—5-A or 1-A secondary or sensitive transformer Tachometer (high-speed pulse) input 8 digital inputs, 5 relay outputs, 1 analog input and output 24-Vdc supply for OPI and RTD modules, and for digital inputs IRIG-B time-code input 1/2 DIN size, surface mount RS-485 network communications (Standard) DeviceNet™, Profibus®, or Ethernet communications available (Temperature Input Module) Accessories 1 MPS-OPI (Operator Interface) A Phase Current Transformers Phase CTs are required to detect phase currents. B Ground-Fault Current Transformer Required zero-sequence current transformer detects ground-fault current. Available with 5-A and 30-A primary ratings for low-level pickup. C MPS-RTD Temperature Input Module Optional module provides 8 inputs to connect Pt100, Ni100, Ni120, and Cu10 RTDs. D MPS-DIF Differential Current Module Optional motor differential protection, compatible with core balance and summation current transformer connections. Ordering Information ORDERING NUMBER COMMUNICATIONS MPS-CTU-01-00 RS-485 MPS-CTU-02-00 RS-485 & DeviceNet™ MPS-CTU-03-00 RS-485 & Profibus® MPS-CTU-04-00 RS-485 & EtherNet/IP™ & Modbus® TCP ACCESSORIES REQUIREMENT MPS-OPI-01-00 Recommended Phase CTs Required Ground-Fault CT Recommended MPS-RTD-01-00 Optional MPS-DIF-01-00 Optional SE-IP65CVR-M Optional © 2017 Littelfuse Protection Relays & Controls Littelfuse.com/mps Rev: 4-B-061517 Based on Manual Rev: 6-F-022117 Protection Relays and Controls Motor Protection–Advanced MPS SERIES (PGR-6300) Motor Protection System Features & Benefits FEATURES IEEE # BENEFITS 49, 51 Overload Current unbalance/ Phase loss/Phase reverse Overcurrent/Jam Undercurrent Ground fault Extends motor life and prevents insulation failures and fires 46 Prevents overheating and extends motor life 50, 51 37 50G/N, 51G/N Prevents catastrophic failures and fires and extends motor life Detects low-level or no-load conditions Prevents catastrophic failures and fires Optional RTD temperature protection (MPS-RTD module) for high ambient or loss of ventilation protection Prevents stress to insulation Prevents a start attempt when it will damage the motor Detects unhealthy supply voltage Provides sensitive protection for high-resistance winding faults Provides protection through starting, running, overload, and cooling cycles Minimizes Arc-Flash hazards during maintenance Simplifies the installation by reducing component count Displays the measured and calculated motor parameters On-board 64-event recorder helps with system diagnosis Remotely view measured values, event records & reset trips Internal circuits are conformally coated to protect against corrosion and moisture 38, 49 RTD temperature 59 27 47 87 Overvoltage Undervoltage Voltage unbalance Phase differential Dynamic thermal mode Reduced overcurrent mode Starter control Metering Data logging Communications Conformal coating Wiring Diagram MPS-OPI Specifications OPERATOR INTERFACE (recommended) 1 GROUND-FAULT CURRENT TRANSFORMER PHASE CURRENT TRANFORMERS MPS-RTD RTD MODULE (optional) (required) (required) Protective Functions (IEEE Device Numbers) A C B MPS-DIF DIFFERENTIAL MODULE (optional) PHASE VOLTAGES D 33 22 30 29 27 26 23 22 20 ...... 17 60 56 53 + I/0 MODULE 52 4-20 mA ANALOG INPUT MPS-CTU CONTROL UNIT RELAY OUTPUTS 1 2 5 ...... 16 RS-485 35 ...... 37 ANALOG OUTPUT 4-20 mA + 39 40 DIGITAL INPUTS 43 ...... 51 2 Input Voltage Power-Up Time Ride-Through Time 24-Vdc Source AC Measurements Frequency Inputs Output Contacts Approvals Communications Conformally Coated Warranty 10 years Mounting (Control Unit) (Operator Interface) Overload (49, 51) RTD temperature (38, 49) Phase reverse (current) (46) Unbalance (current) (46) Overfrequency (81) Underspeed (14) Overcurrent (50, 51) Starts per hour (66) Jam Phase loss (voltage) (47) Underfrequency (81) Overvoltage (59) Ground fault (50G/N, Differential (87) 51G/N) Phase loss (current) (46) Undercurrent (37) Undervoltage (27) Unbalance (voltage) (47) Phase reverse (voltage) (47) Failure to accelerate Power factor (55) 65-265 Vac, 25 VA; 80-275 Vdc, 25 W 800 ms at 120 Vac 100 ms minimum 100 mA maximum True RMS and DFT, Peak, 16 samples/cycle, and positive and negative sequence of fundamental 50, 60 Hz or ASD Phase current, Earth-leakage current, Phase voltage, 7 digital, tachometer, 1 analog 5 contacts — See Product Manual CSA Certified, RCM (Australian), UL Recognized Allen-Bradley ® DFI and Modbus® RTU (Standard); DeviceNet™, Profibus®, Ethernet (Optional) Standard feature Surface Panel, Control-Unit mounted CONTROL POWER © 2017 Littelfuse Protection Relays & Controls Littelfuse.com/mps Rev: 4-B-061517 Based on Manual Rev: 6-F-022117