Nor-Cal SDC15 Controller - Manual (Page 115)

5-65
◆ Others
C72 [mode key function]: 7 (COM DI1 selection)
SP up ramp/down ramp:
Desired value
◆ Setting points
The internal EV1 is substituted for the guarantee soak.
Therefore, “9999” is set to the hysteresis of Event 1 so that Event 1 is not turned
OFF after it has been turned ON even though the PV fluctuates.
DI Assignment (Internal Contact 1): Input/Output port setup
DI Assignment (Internal Contact 2): Input/Output port setup
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
Logical AND of COM DI1 (a-contact)
and timer (b-contact) Mode (RUN/READY) selection
contact Reversed at this point since the
mode is the READY mode when
turned ON.
The timer start is self-retained at time-up so that
the timer is not restarted due to change in PV. Timer start-up contact
Conditions for guarantee soak (ramp is completed and operation enters
within the deviation of the final SP.)