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Monitoring and Operating the Controller
118 UDC2500 Universal Digital Controller Product Manual 4/07
4.21 Setpoint Ramp/Soak Programming
Introduction
The term “programming” is used here to identify the process for selecting and entering
the individual ramp and soak segment data needed to generate the required setpoint
versus time profile (also called a program).
A segment is a ramp or soak function which together make up a setpoint program.
Setpoint Ramp/Soak Programming lets you configure six ramp and six soak segments to
be stored for use as one program or several small programs. You designate the beginning
and end segments to determine where the program is to start and stop.
Review program data and configuration
While the procedure for programming is straightforward, and aided by prompts, we
suggest you read “Program Contents”. Table 4-25 lists the program contents and an
explanation of each to aid you in configuration. Then refer to Subsection 3.5 –
Configuration to do the setpoint program.
Make sure SPRATE and SPRAMP are disabled.
Fill out the worksheet
Refer to the example in Figure 4-3 and draw a Ramp/Soak Profile on the worksheet
provided (Figure 4-4) and fill in the information for each segment. This will give you a
record of how the program was developed.
Operation
Refer to Table 4-26 Run/Monitor the program.
Program Contents
Table 4-25 lists all the program contents and a description of each.
Table 4-25 Program Contents
Contents Definition
Ramp time or rate
segments
A ramp segment is the time or rate of change it takes to change the setpoint
to the next setpoint value in the program.
• Ramps are odd number segments. Segment #1 will be the initial ramp time.
• Ramp time is determined in either:
TIME* - Hours:Minutes Range = 0-99 hr.:59 min.
or
EU-M* - Degrees/Minute Range = 0 to 999
EU-H* - Degrees/Hour
*The selection of time or rate is made at prompt “RP UNIT”
- Set this prompt before entering any Ramp information.