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  1. VMX-B "Basic" Configured Starter

    Basic Configured Soft Starter in NEMA 4 / 12 Enclosure

    Flexibility of Control
    Multiple ramp profiles, Pump-Flex Decel and advanced motor protection make the VMX Series soft starter adaptable to a wide variety of AC motor applications... no need for add-on modules or costly auxiliary devices.

    Compact packaging has become critical in more and more electrical installations. The VMX Series meets this need without compromising features and ratings. By using a highly engineered packaging design and the latest generation microprocessor, all the control and protection features you need are in the VMX Series. Narrow and shallow dimensions are perfect for integrating the VMX Series into motor control centers (MCCs), pump control panels, and retrofit starter enclosures.

    Integral Bypass Contactors are standard on all sizes and provide maximum efficiency of panel space while maintaining the Motortronics reputation for being able to soft start most any load. The VMX Series is the only fully integrated, compact, world-class design offering uncompromised power and control capabilities.

    AC Supply Voltage: 208 - 575 Vac

    HP Ratings: 7.5 to 1000 HP

    Amp Ratings: 25 to 1080 Amps

    Overload: 500% for 60 sec.

    Bypass: Shunt Rated Contactor

    Enclosure: NEMA 4/12

    Starting Method: Adjustable 6 SCR based voltage/current ramping with Full Size SCR Bypass and switch for Full Voltage D.O.L. start with overload.

    Call us for pricing and availabilty.

    Command Center
    The Command Center Interface allows for basic Functionality and Diagnostics.

    Command Center Functionality

    Illuminated E-STOP Pushbutton
    Start/Stop Pushbutton and Motor Run Light Assembly
    Local/Off/Remote Selector
    Fault Light / Reset Pushbutton

      Power Components
      6 SCRs in inverse parallel pairs for full phase angle soft start control
      1600V PIV rating on all units
      RC snubber for dv/dt protection of each SCR pair

      Line Voltage Range
      200 to 600 VAC, 3 phase +10% -15% on all units,
      50/60Hz

      Current Ratings
      18 - 1250A depending on unit selection
      Range of each unit is 50-100% of maximum

      AC Supply Voltage
      User supplied 120VAC +10% -15% tolerance, 60Hz
      Optional 240VAC 50Hz control available

      Overload Capacity (% of motor FLA)
      500% for 60 seconds

      Bypass Contactor
      Standard on all units
      Shunt rated bypass/ Line start rated bypass

      Start/Stop Control Choices
      2-wire Run-Stop using dry contacts
      3-wire Start/Stop with built-in seal in contact
      N.C. Interlock input (dry contact) for remote devices

      Ramp Control Choices (4 built-in)
      Voltage Ramp
      Voltage Ramp with Current Limit
      CLT© Closed Loop Torque Ramp (Current Ramp)
      Current Step (current limit only)
      Ramp times adjustable 1 - 120 seconds
      Current Limit adjustable 200 - 600% of FLA

      Dual Ramps
      Select via dry contact closure between any
      combinations of the above

      Start & Run Protection
      Two programmable overload trip curves allow for the
      thermal capacity required to start the load while providing
      motor overload protection needed during the run time.
      Start: Programmable for Class 5 - 30
      Run: Programmable for Class 5 - 30, enabled when starter
      detects motor is "At-Speed"
      Reset: Manual or automatic, selectable via programming.
      Remote reset available.

      Real-Time Thermal Modeling
      Continuously calculates motor operating temperature even
      when the motor is not running.

      Retentive Thermal Memory
      Remembers the thermal condition of the motor even in the
      event of a power brown-out or black-out when power is
      restored. Extrapolates motor temperature using a real-time
      clock.

      Dynamic Reset Capacity
      Overload will not reset until thermal capacity in the motor is
      sufficient for a successful restart. Starter learns and retains this
      information from previous starts.

      Motor Temperature
      PTC thermistor input can also be used for E-stop or external
      overload relay.

      Equipment Ground Fault
      Residual current method with adjustable trip delay.

      Phase Current Imbalance/Loss Protection
      Trip level: 5 - 30% current imbalance between any two
      phases with trip delay

      Jog
      Dry contact closure selects a non-ramping Jog
      function at an adjustable torque

      Kick Start
      10 - 100% starting torque for 0.1 - 2 seconds

      Pump-Flex? Deceleration Ramp
      Fully adjustable to match field conditions:
      Begin Decel setting, 0 - 100% of line voltage
      Decel ramp time, 1 - 60 seconds
      End Decel setting (Off ), 0 - 1% of Begin setting

      Restart Delay Timer (Sequential Start Delay)
      Programmable time delay 1 - 999 seconds after loss
      of control power for staggered restarts

      RS-485 Serial Communications
      Up to 247 starters per link
      Modbus RTU protocol built-in
      Full programming over the serial link
      Programmable remote starter control

      Operator Interface
      Tactile feedback keypad
      Easy to read LED display
      Run and fault
      status indicators

      Electronic Shear Pin Protection
      Trip level: 100 - 300% of motor FLA with trip delay

      Motor Duty Cycle Protection
      Back-spin/coast-down, starts-per-hour or minimum
      time between starts lockouts. Restart delay after a power failure.

      Short Circuit
      Trips at 10x unit current rating during run. Checks for
      shorted load prior to each start.

      Shorted SCR
      Locks out on any single shorted SCR (defeatable) or
      can provide shunt trip function if multiple SCRs short
      or bypass contactor is welded closed.

      Metering
      Monitors phase current, ground current and motor
      thermal capacity.

      Phase Loss
      Trips on phase current or voltage loss

      Phase Rotation
      Phase rotation trip can be set to A-B-C, A-C-B or disabled.

      Motor Protection Features

      Retentive Thermal Memory
      Remembers the thermal condition of the motor even if control power is lost. Thermal Register is adjusted for Off-Time when power is resumed.

      Learned Dynamic Reset
      Overload Trip will not reset unless motor has regained enough thermal capacity based on learned motor starting profiles.

      Phase Loss/Sequence Protection
      Trips on any phase under 20% of Voltage. Sequence selectable A-B-C, C-A-B or Off.

      Over Voltage Trip
      Any phase voltage over trip level Of or 1-10% of set voltage, w/1-20 sec. delay.

      Load Monitor (True Motor Power)
      Under or Over kW trip or alarm Off, or 20-100% motor kW, w/1-20 sec. delay.

      Equipment Ground Fault Protection
      Electronic Residual current protection method, no additional CTs needed Setting: Off, 5-90% of CT w/1-60 sec. delay.

      Starts-per-Hour Lockout
      Programmable maximum starts-per-hour to prevent exceeding motor limits. Setting: Off or 0-10 start / Hr.

      Programmable Service Factor
      Service Factor setting automatically adjusts other settings to compensate. Adjustment Range: 1.0-1.15 SF.

      Over-Current Trip
      Electronic Shear-Pin / Shock Relay Setting: Off or 50-300% FLA w/1-20 sec. dela.y

      Under Voltage Trip on Startup
      Off, or 1-30% of set voltage 1-180 second startup time.

      Power Factor Monitor
      Leading or Lagging PF, trip or alarm Off, or 0.01-1.00, lead or Lag w/1-20 sec. delay.

      Short Circuit / Shorted Load
      Peak Current quick trip (electronic fuse) Trip level: Off or 800-1400% FLA, with .1-.5 sec. delay.

      Minimum Time Between Starts
      Used with or without Start-per-Hour protection to prevent short cycling of motor Setting: Off or 1-60 minutes between starts.

      Dual Overload Curve Settings for RV start
      Start Curve can be set to Class 5-30 Run Curve can be set to Class 5-30 Automatic Full Speed detection and change over.

      Current Imbalance Protection
      Provides monitoring of phase-to-phase current levels and trips if imbalance exceeds setting. Setting: Off or 1-30% FLA w/1-20 sec. delay.

      Under-Current Trip
      Load-Loss /Loss of Prime protection Setting: Of or 10-90% FLA w/1-60 sec. delay.

      Under Voltage Trip at Full Speed
      Off, or 1-30% of set voltage 1-20 second trip delay.

      Coast-Down Timer
      Back Spin or Anti-Wind Milling protection Prevents Restart after Stop Command Time Setting: Off or 1-60 min.

      Restart Delay Timer
      Programmable delay for restarting after a power failure for use in multiple installations. Setting: 0-999 sec.

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