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MST-5C USER'S GUIDE
Additional information on parameters
The following is a more detailed description of general-purpose parameters.
Time of Day (time clock)
The MST-5C comes with its own integrated time clock. This feature is
appreciated by users who want to know the current time of day. Note that if a
power failure occurs, the clock will not run and will start back at the time the
power failure occurred. However, the time clock's main purpose is to allow
ramping to operate.
The following instructions show how to change the time of day on the control:
The time is displayed in HH:MM format and does not flash. Press the SET/CLR
button to access clock adjustment mode. At this moment, the minutes will flash
and be adjustable. Press the F2 button to toggle between hour and minute
adjustments. Press the SET/CLR button or change the parameter selection
knob position to exit the clock adjustment mode.
Growth Day
The Growth Day plays an active part in the ramping settings. With this
parameter, users can program the growth day of a growth curve. Day by day, the
growth calendar's value will increase by increment of 1, from a minimum setting
of -10 to a maximum of 365.
Ramping
The ramping parameter will automatically calculate and change its value every
hour. The amount by which the parameter is changed is determined by the
ramping curve.
Before the first point, the parameter takes the value entered for the first point. For
example, point 1 is at 80°F at day #10. From day #1 to day #10, the value will be
80°F.
After the last point, the curve remains operational. While it continues to count
days, the set point does not flash and cannot be changed. For example, the last
point (day #40) is set at 70°F. After day #40 the parameter remains at 70°F, until
ramping is deactivated, by setting the Growth Day to OFF.
The following instructions indicate how to set the Growth Day of a ramping curve:
Select the ramping parameter (ex: Main Set Point, etc.). Make sure the Growth
Day is set to OFF. Press the SET/CLR button. At this moment, the first day of
the growth curve will be displayed.
Section C-40
MST-5C
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