80209C_MHW_850-1650-1850_02-2020_ENG_pag. 146
4.20.5. TIM.HI - Impulse mode setpoint
Acronym Scrolling message Submenu Attributes
TIM.HI IMPULSIVE MODE INTERVENTION THRESHOLD VALVE R W
The parameter shows and sets the impulse mode setpoint as a percentage of valve opening time TRAVL.
The control function is explained in detail in paragraph “5.14. Managing motorized valves” on page <?>.
Unit of measurement: % di TRAVL
Options: 0.0...100.0
4.20.6. TIM.ON - Minimum valve impulse time or ON time in impulse mode
Acronym Scrolling message Submenu Attributes
TIM.ON ON TIME FOR IMPULSIVE MODE VALVE R W
The parameter shows and sets the minimum valve impulse time or ON time in impulse mode as a percentage of valve
opening time TRAVL.
Unit of measurement: % di TRAVL
Options: 0.0...100.0
4.20.7. TIM.OF - OFF time in impulse mode
Acronym Scrolling message Submenu Attributes
TIM.OF OFF TIME FOR IMPULSIVE MODE VALVE R W
The parameter shows and sets OFF time in impulse mode as a percentage of valve opening time TRAVL.
A value below TIM.ON is forced to TIM.ON.
The TIM.On and TIM.OF functions are both excluded if the parameter equals “0.0”.
Unit of measurement: % di TRAVL
Options: 0.0...100.0
4.20.8. DEAD.B - Deadzone symmetrical to setpoint
Acronym Scrolling message Submenu Attributes
DEAD.B DEAD ZONE VALVE R W
The parameter shows and sets a band symmetrical to the setpoint. If PV is in this band, valve activity and the related
integral action is stopped.
It prevents frequent corrections of the valve position, with consequent electromechanical stress, following small changes
in the value of the PV.
Unit of measurement: % of full scale of main or auxiliary input.
Options: 0.0...25.0
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