May 24, 2007
Barge Transfer System Gets New Controls and
by Eric Brown
At Engineered Lifting Systems, we handle
the requirements of many types of customer needs beyond crane and hoist
applications. Applications for conveyors, rock crushers, pumps, and
other material handling systems are designed, and modernized.
Such was the case with an existing river location using two barge
winches to pull a barge into position on the moorings for the removal of
material. Old Reliance DC drives and motors were replaced using Magnetek
VG+ Flux Vector Drives and Inverter Duty motors.
The drives are controlled manually, but interfaced with a series of
limits and checks using a PLC control
The Magnetek motors with encoder feedback and brakes are exposed to the
TENV motors, provided for outdoor service with motor heaters.
These babies have to be ready to work 24-7, 365!
After the river boat brings the barge to
the moorings, the operator in the cab-house uses the control and power
of the Magnetek drives and motors to position the barge in a “Pull –
Pull” configuration of the winch rigging, so that when one winch pulls
the barge, the other winch goes into torque control to make sure there
is an appropriate tension on the line side being pulled. The operator
then “vacuums” the product out of the barge in cycles.
Vacuum Tube in Action
The existing drives were to be taken out
of service, so as designed by Engineered Lifting, Magnetek provided a
“drop in place” back plate wired panel with the drives.
Better picture of the Magnetek VG+ Series 3 Drives
The result was a complete success! The
customer saved a “Barge-Load” of money by switching to AC motors and
Magnetek Drives, and reports 100% operational capability for the system.
Engineered Lifting today to discuss your application! We handle
Magnetek Soft-Starts for Crusher, Pump, or Conveyer projects also.