Watlow PM PLUS 6 - Page 111

Watlow PM PLUS™ 6 • 111 • Chapter 9: Applications
• Valve Travel Time is the amount of time the valve needs to be turned on (either open or close) to eliminate
the error between the estimated valve position and the desired power level. A positive On Time value
indicates the need to open the valve while a negative value indicates the need to close the valve. On Time =
(Input 1 Value - Current Position) / 100 * Valve Travel Time
When power is applied to the controller, the valve is closed and time is set to 0.
- Special Output Function 1 is the close signal to the valve.
- Special Output Function 2 is the open signal to the valve