Honeywell UDC2500, Product Manual

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Monitoring and Operating the Controller
120 UDC2500 Universal Digital Controller Product Manual 4/07
Contents Definition
ENABL = When the program is initially changed from HOLD to RUN the
present PV value is captured and used as the beginning setpoint
value for the ramp segment. If the program is terminated before
completion, the setpoint value will revert back to the PV value
captured at the initial HOLD to RUN transition. If the power is
cycled before program completion, upon power-up the setpoint is
set to the PV value at power-up and when the program is restarted
that setpoint value is used initially.
Program state
The program state selection determines the program state after completion.
The selections are:
•
DIS = program is disabled (so program value changed to DIS)
•
HOLD = program on hold
Program termination
state The program termination state function determines the status of the controller
upon completion of the program.
The selections are:
•
LAST = controls to last setpoint
•
FSAF = manual mode and failsafe output.
Reset Program to
Beginning When enabled, this selection allows you to reset the program to the beginning
from the keyboard.
Ramp/soak profile example
Before you perform the actual configuration, we recommend that you draw a Ramp/Soak
profile in the space provided on the “
Program Record Sheet ” (Figure 4-4) and fill in the
associated information. An example of a Ramp-Soak Profile is shown in Figure 4-3.
Start setpoint is at 200 degrees F.