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CONTROL CONFIGURATION SUB-MENU SCREENS
Primary Power Lower
Limit
The minimum primary output power limit. The control algorithm will not allow
the power output fall below this level. Adjustable from 0 to 90% but is always
at least 10% below the primary power upper limit.
Caution:
The instrument will not be able to control the process
correctly if the lower limit is above the level required to maintain
setpoint.
Primary Power Upper
Limit
The maximum primary output power limit. The control algorithm will not allow
the power output rise above this level. Adjustable from 10 to 100% but is al-
ways at least 10% above the primary power lower limit.
Caution:
The instrument will not be able to control the process
correctly if the upper limit is below the level required to maintain
setpoint.
Secondary Power Lower
Limit
The minimum secondary output power limit. The control algorithm will not
allow the power output fall below this level. Adjustable from 0 to 90% but is
always at least 10% below the secondary power upper limit.
Caution:
The instrument will not be able to control the process
correctly if the lower limit is above the level required to maintain
setpoint.
Secondary Power Upper
Limit
The maximum secondary output power limit. The control algorithm will not al-
low the power output rise above this level. Adjustable from 10 to 100% but is
always at least 10% above the secondary power lower limit.
Caution:
The instrument will not be able to control the process
correctly if the upper limit is below the level required to maintain
setpoint.
Sensor Break Pre-set
Power Output
Set the power level to be applied if the process input signal or an active remote
setpoint input is lost. Adjustable from 0 to 100% for single control or -100 to
+100% for dual control. The default value is OFF (0% power). Does not apply
if control is disabled or in manual mode.
Caution
:
Ensure the value set will maintain safe process condi-
tions.
Motor Travel Time
The motor travel time (valve movement time from fully open to fully closed in
mm:ss). Adjustable from 5s to 5 mins - In VMD Control Mode only.
Minimum Motor On
Time
The minimum drive effort (in seconds) to begin moving the motorized valve
in VMD Control Mode. Adjustable from 0.02 to 1/10 of the Motor Travel Time
Valve Open Limit
The maximum position the controller will attempt to drive the valve to in VMD
Control Mode. Adjustable from the valve close limit+1% to 100.0% (fully open)
- Only possible if the 2nd input is used for valve feedback.
Valve Close Limit
The minimum position the controller will attempt to drive the valve to in VMD
Control Mode. Adjustable from 0.0% (fully closed) to the valve open limit-1%
- Only possible if the 2nd input is used for valve feedback.
Valve Sensor Break
Action
The direction to drive the valve if the process input signal or an active remote
setpoint input is lost. The default action is to drive the valve closed. – Applies
to VMD Control Mode only. Does not apply if control is disabled or in manual
mode.
Caution:
Set to safe values for the process!
Содержание Chromalox 4081
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