AC Motor Control
AC – Inverter Control
MHAI integrate Variable Speed Drives (VSD’s) from leading manufacturers into our crane control systems to provide complete customer turnkey solutions. VSD’s provide extremely precise electrical motor control, so that motor speeds can be ramped up and down, and maintained, at required speeds. This process ensures no wasted excess energy, as the motor is not running at constant (fixed) speeds. Benefits
• Controlled Starting Current
• Reduced Power Line Disturbances
• Lower Power Demand on Start
• Controlled Acceleration
• Adjustable Operating Speed
• Adjustable Torque Limit
• Controlled Stopping
• Energy Savings
• Reverse Starter elimination
• Elimination of Mechanical Drive Components
AC – Slipring Motor Control
The THYROMAT series offers robust and reliable digital crane control units designed to manage crane hoist and travel motions using slip ring motors. These units are engineered for extreme environments where continuous operation is crucial.
• Robust, reliable mechanical construction
• Compact design – engineered to meet the requirements of
new and existing cranes
• Delivers leading Thyristor technology using slip- ring motors
• Digital and keypad interface – simple to operate
• Extreme ambient temperature – 60° Celsius in
harsh operating environment
• Self Diagnostics with built in watchdog
• Torque proving and integral brake control