M-43-01
Lufran Single Outlet Manual
Revision - Date: 08 – 04/06/15
- 38 -
System Parameters Menu:
This menu will provide information pertaining to the different offset values entered for
the temperature sensors as well as some adjustable control parameters. When one of
these buttons is selected, a keypad will appear to allow the operator to change the
value. The operator must press enter after making a change in order to save the new
value.
System
Parameters Menu
Information Panel
Description
INLET T/C OFFSET
This button allows adjustment of the offset value for the inlet water
thermocouple sensor. The adjustment range is -10°C to +10°C.
P/-
DEVIATION
This button allows adjustment of the process deviation value. The
maximum value for this setting is 20°C. The process deviation provides
indication to the operator whenever the heater outlet water temperature is
above or below the process setpoint by a value greater than the value of
this setting. This setting does not trigger an alarm and will not shut down
the heater.
HIGH PROCESS
SETPOINT
This button allows adjustment of the HIGH PROCESS SETPOINT. This
setting may be adjusted as high as 120°C. The factory default value for this
setting is 110°C. If the heater outlet temperature exceeds the value of this
setting, the heater will enter an alarm state. This alarm state will shut down
the heater and will require a manual reset once the alarm event has ended.
OUTLET T/C
OFFSET
This button allows adjustment of the offset value for the outlet water
thermocouple sensor. The adjustment range is -10°C to +10°C.
OVERSHOOT
DEADBAND
This button allows adjustment of the outlet temperature OVERSHOOT
DEADBAND. When the heater outlet temperature rises above the process
setpoint by this value (°C), the heater power output will be reduced to 0%.
This will not trip an alarm. The DAC control system will detect the peak of
the temperature overshoot and re-establish power to the heater once the
peak has occurred in order to provide a more gradual and precise return to
the process setpoint.
Figure 23: System Parameters Menu Screen
