LMC™ Crane Controls by Cableform Inc
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, 460VDC 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