Thern Cranes and Winches  

Thern Variable Speed Motor Control

For 3-phase, 230-VAC motors from 1 to 25 hp and 3-phase, 460-VAC motors from 1 to 60 hp

10:1 Infinitely Variable-Speed Controls provide accurate positioning of loads, soft starts, soft stops, and overload protection.

Features:
Frequencies greater than 50 Hz are possible in no-load or light-load conditions decreasing rigging time.
• Diagnostic and Troubleshooting Capabilities: digital display provides drive status.
• Programmable Performance keypad is adjustable to control acceleration and deceleration rates.
• Steel Enclosure is NEMA 12 rated (indoor). NEMA 4 rated (watertight) enclosures also available.
• Pendant Control Switch is NEMA 4X rated (watertight) with 3-step, infinitely variable-speed push buttons on a 50-foot cord, which allows the operator to stand away from the winch during operation. Pendant control is operated with momentary contact-type push buttons. Cord lengths of less than 50 feet are available. Please specify when ordering.
• UL, IEC, or CSA Recognized components throughout.
• Electronic Thermal Overload Relay provides motor overload protection and is field programmable.
• Wiring Diagram is supplied inside enclosure.
• Options available include multiple axis, remote controls, mainline contact, disconnect switch, enclosure temperature controls, indicating lights, selector switches, horn and bells, meters, and limit switches. Contact Thern for more information.
• Explosion-Proof Controls also available. Please contact Thern for more information.
• Two-Year Limited Warranty

RESOURCES:



WHEN ORDERING, PLEASE INCLUDE THE FOLLOWING:
• Voltage and phase required
• Motor horsepower
• Pendant control cord length—up to 50 feet
• Pendant control labeling—for/rev or up/down
• Indoor or outdoor use
• Lifting or pulling application

Thern Variable Speed Electric Motor Control Specs