LMC™ Hoist Controls - Retrofits & New Installation

Hoist Controls for up to 500HP Hoist Motors

Solid-State IGBT Control of series-wound DC hoist motors delivers high torque at startup, adjustable speed points and acceleration / deceleration ramps, electric braking and elimination of all contactor problems

Easy Retrofit Installations

  • Connect existing power cables
  • Connect existing motor cables
  • Connect existing brake cables
  • Connect existing operator controls
  • Fine-tune pre-set acceleration ramps, speed points and braking

Save Energy Costs

Motor energy consumption reduced by 66.5% plus torque boost at startup is 7 amps in the motor for every 1 amp drawn from the power source-motors work easier and last longer

Save Maintenance Costs

Solid-state construction, no wear components plus microprocessor control of contactors means contactors never make or break a load with Microprocessor Logic, 5-speed card & IGBT’s

LMC Hoist Control Technology Eliminates problems caused by

  • Brownouts and discontinuity of the power supply
  • Substantial negative ring of supply voltages
  • Positive-going transients caused by switching off other machines

Patented Hoist Control

  • True series motor hoist circuit
  • True shunt motor lowering circuit
  • Emergency Brake Contactor
  • Upper Limit Switch Coordination
  • DB Circuit IGBT Switch + Parallel Contactor

Additional Benefits

  • Open architecture panel design
  • All components easily accessible
  • Multiple operator control choices
  • Fault register for easy troubleshooting
  • Hand-held data terminal for setup, changes in setup and diagnostics
  • Works with Series Brakes and/or Shunt Brakes—specify when ordering
  • Duplex & quadruplex available

Typical Specifications:

  • Voltage: 230 VDC Nominal, 300 VDC Max, 120 VDC min
  • DC Mill Motor Frame: 602, 802 through 622,822
  • Ambient Operating Temperature: +50°C Maximum to -10°C Minimum
  • High ambient drives available: +60°C Maximum to -10°C Minimum
  • Diagnostics & Parameter Adjustment: Data Terminal, Part No. A62499
  • DB Resistor: required but not included, reuse existing units in good condition