Navigation Lock Downstream Gate Hoist Machinery Upgrades
Owner: United States Army Corps of Engineers, Walla Walla District
Customer: Knight Construction
Year: 2017
Performance: Project completed on schdule and within budget
Project Description: Replaced existing hydraulic based gate hoisting system with VFDs
Replaced Existing Control System with PLC based controls with touch panels as HMI
Special Circumstances: Project completed with a shutdown of the entire river system while we also completed the Ice Harbor Lock and Dam Lower Gate controls replacement. HMIs record operator inputs and log data.
PLC: Allen Bradley Controllogix
HMI: Red Lion Graphite
VFDs: Allen Bradley PowerFlex 755
