Our customers have asked us to upgrade a number of different Portal Cranes with a variety of different challenges to be overcome:

• Sun vs. Shade and Effects on drive wheels and rails
• What happens when the driven wheels are different sizes
• Replacing DC motors and drives with AC

Retrofitted

• Safety Relay with a run down time delay
• Dual Channel Type 7 E-Stop button
• Solenoid Release Trapped Key
• Dual Trapped Key Chain Lock
• Dual Safety Motor Contactors
• Stainless grate under tank lid
• More differentiators

CHALLENGES OVERCOME

Gantry Drives

• Crabbing
• Wheel diameters
• Braking
• Gearboxes

Trolley Drives

• Crabbing
• Icy drive rails
• Plugging
• Hydraulic Brakes

Hoists

• Zero Speed holding torque
• Aux brakes
• Overhauling loads
• Torque limiting

PLC integration

• Safety interlocks

Operator Controllers

• Joystick interface
• Analog signals

Environmental

• -25 outside
• Direct sun on the cabinet
• Condensation
• Restricted space
• Soft Power Supplied