Panatrol was contracted to construct the controls of the Sarah Mildred Long Bridge.
Scope:
- Cold Backup PLC system
- Completely HMI controlled
- No Pilot Device operators
- Redundant HMIs on operator console
- Tower Drive Lift Bridge
- Required Skew Control using networked absolute encoders
- Panatrol’s proprietary skew control algorithm kept a 300 ft long movable span within 1/2 inches of height difference from end to end