Coffing said the compact size of the drive unit allows neat and complete placement under the cover of the hoists. This new option enhances the standard hoist’s features.
The VFD allows for unsurpassed load-spotting and inching capability. The VFD offers additional speed flexibility that standard two-speed motors cannot offer. The soft starting and stopping of the unit is “perfect for delicate applications,” added Coffing.
The variable frequency drive features infinitely variable (12:1 speed ratio) to any intermediate, predetermined speed range. The Coffing JLC-V drives also feature a closed loop system. The closed loop system provides additional load control in lieu of a secondary load brake by monitoring the movement of the hook through the transmission.
The standard two-step buttons allow the operator to increase and maintain the lifting or lowering speeds. The optional three-step button allows the operator to increase, maintain, or decrease the lifting or lowering speeds.
