User`s guide
Setpoint Programming
Setpoint Program Attributes
150 UMC800 Control Builder User’s Guide Release E
1/01
Item Description
5 Soak Segments—A soak segment is a combination of soak setpoint (value) and soak duration
(time).
The last segment must be a Soak.
The soak setpoint range value must be within the setpoint high and low range limits in engineering
units.
SOAK TIME is the duration of the soak and is determined in:
TIME*—Hours or Minutes Range = 0.00 hr. to 999.99 hr. / 0.00 min. to 999.99 min.
*This selection is made when you configure properties.
6 Guaranteed Hold - Soak Limits—Limits High and Low (above and below the Setpoint value) can be
configured in selected engineering units. If the PV is outside of configured limits just prior to entering
the Soak segment, the soak timer will not be permitted to start. It will start when the PV is within the
High and Low limits. Once the soak timer has started and then the PV goes out side of configured
limits, the soak timer will halt. It will remain halted until the PV is again within the configured limits. A
Guaranteed Hold High or Low limit setting of 0.00 is equal to no limit at all.
7
Number of Segments—Segments are timed ramp and soak subdivisions of a setpoint program.
Consecutive ramps and soaks are allowed. The last segment must be a soak. There can be up to 70
programs of 50 segments each.
8 Segment Events—You can configure 1 to 16 segment events to turn ON or OFF at the beginning of
each segment. Segment events are digital switches that provide ON/OFF outputs through an SPEV
control block in the Control Builder. When a segment event is turned ON, it remains ON until the
end of the segment at which time it is turned OFF unless it is configured to turn ON in the next
segment. Note that segment events are not interrupted by soak time delays when the process
variable is outside the guaranteed soak band. Events turn ON as soon as the previous segment is
completed even if the process variable has not reached the soak setpoint. When the program
completes, the events are held at current value until the programmer is returned to the ready state.
9
Aux. Out—A second analog value is available for each step of the program. It is a fixed soak value
and can be used to provide a setpoint value for a secondary control loop in the process.