Adjust Control Valve

PC22365-UN-31MAR16

PC22366-UN-31MAR16

PWM Setup Button

Valve type selected in the setup wizard may need adjustment for specific applications.

Select Control Valve Setup button to adjust control valve.

Default Valve Values

Valve Response Rate — Enter value for aggressiveness of rate controller as it approaches target rate. A value that is too high may lead to oscillation. While a value too low may take a long time to reach target rate.

Control Deadband — Enter percent of rate tolerance for control valve. For example, if 2% is entered, rate controller attempts to adjust flow rate until actual rate is within 2% of target rate.

Valve Delay — Enter amount of time in seconds between when first section is turned on and rate controller begins to control flow rate. This is useful when starting product application at lower speeds, such as coming out of headland areas.

Valve Advance — Enter amount of time in seconds rate controller commands control valve to open after all sections are turned off. This may be used in conjunction with valve delay for low rate applications to build up pressure when master switch is turned on.

Control Effort — Enter minimum percentage power needed for control valve to change position.

PWM (Pulse Width Modulation) Setup Button

If a PWM valve was selected, select PWM Setup button for additional options.

Coil Frequency — Frequency of pulses sent to PWM valve.

(Reference valve manufacturer Operator’s Manual for the recommended settings.)

High Limit — Maximum PWM percent rate controller allows system to reach when product is applying.

Low Limit — Minimum PWM percent rate controller allows system to reach when product is applying.

PWM Standby (PWM valve) — Duty cycle rate controller maintains when all sections are closed.

PWM Startup (PWM close valve) — Duty cycle rate controller commands to when valve is opened.