LOCK GP-TRANSPORT 4882911 - Caterpillar

Illustration 18 g02839724Valve Offset Value Range - 1–999When a grade sensor is out of the on-grade zone, the "Valve Offset" signal is applied to the valve. As the sensor moves farther from on-grade, the amount of signal sent to the valve increases to the maximum signal level based on the "Gain" setting. The value displayed for "Valve Offsets" represents a percentage of the maximum signal level, with 1000 = 100 percent.While using Proportional Current "PrO", the valve offset number is a percentage of the total current available. For example, if the Current Limit (CL) has been set to 3.5 amps, a Valve Offset value of 350 (representing 35 percent) indicates that 1.2 amps will be applied as the Valve Offset value.Since the "Valve Offset" value is based on the Current Limit setting, changing the Current Limit effects the "Valve Offset" value. The "Valve Offset" value should typically be between 200–400 for "Proportional Valves".
If you get avery low "Valve Offset" value, decrease the "Current Limit" setting and readjust the "Valve Offsets".
If you get avery high "Valve Offset" value, increase the "Maximum Current" setting and readjust the "Valve Offsets".
Illustration 19 g02839739
(25) 27 ms = 135 (13.5 percent) Valve Offset
(26) 200 ms
Illustration 20 g02839740
(27) 35 percent = 350 Valve Offset
(28) 1 Duty CycleWhen using Pulse Width Modulation (PLS) or Solenoid Valve (SOL), the valve offset number is a percentage of the total duty cycle.For example, if a Solenoid Valve frequency has been set to 5 Hz, one duty cycle would be 200 milliseconds. A value of 135 (representing 13.5 percent of the duty cycle) indicates that 27 milliseconds will be applied as the "Valve Offset".If the "Pulse Width Modulation" frequency has been set to 480 Hz, a value of 350 indicates that 35 percent of the duty cycle will be applied as the Valve Offset.Elevation Deadband
"Elevation Deadband" is the on-grade area of the Grade Sensors Working Window.
Illustration 21 g02839760Deadband Elevation Value Range - 1–30 mmWhile the reference is within on-grade area, the valves are idle "closed". The wider the Elevation Deadband, the greater the elevation can vary without initiating a correction. Once the elevation signal from the reference is out of the Deadband, System Five drives the hydraulics to place the reference back to the CENTER of the Elevation Deadband.
Changing Elevation Deadband adds or takes away from the fine correction region ( 1.52 mm (0.06 inch), above or below on grade) of the Working Window.The Deadband does not add this distance to the overall range of the Working Window.
See "Working Window Adjustment" for more details on the Working Window.Slope Deadband
"Slope Deadband" defines the size of the on-grade area. No valve corrections are made in this area.
Illustration 22 g02839776Deadband Slope Value Range - 025 percent −75 percentThe wider the "Slope Deadband", the greater the slope can vary without initiating a correction.For example, if the operator is grading at a 2.0 percent slope and the "Slope Deadband" is set at .10 percent, the system reads on-grade anywhere from 1.95 percent slope to 2.05 percent slope. The lower the