Monitoring and Operating the Controller 
3/07  UDC3500 Universal Digital Controller Product Manual  249 
Associated 
Prompts 
Contents  Definition 
SEGx SP 
SEGxTIME 
Soak segments 
A soak segment is a combination of soak setpoint (value) and 
a soak duration (time). 
•  Soaks are even number segments (2, 4, . . . 20). 
•  Segment 2 will be the initial soak value and soak time. 
•  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:Minutes  Range = 0-99 hr:59 min. 
SEGX PID  PID Set 
These prompts will appear only when the number of PID sets 
selected in the Control or Control 2 Setup Group is set to 
4KEYBD. Each Ramp and Soak segment may select a specific 
PID set. A Setpoint Program enabled only for Loop 1 will use 
Loop 1 PID Sets. A Setpoint Program enabled only for Loop 2 
will use Loop 2 PID Sets. A Setpoint Program enabled for both 
Loop 1 and Loop 2 will use Loop 1 PID Sets. 
  Range:  PID Set 1 to 4 
SOAK2DEV 
through 
SOAK20DEV 
Guaranteed Soak
Deviation Value 
Each individual soak segment can have a unique guaranteed 
deviation value of from 0.000 to ±99.99 in engineering units. 
Guaranteed Soak deviation values greater than zero ensure 
that the soak segment’s process variable is within the ± 
deviation value for the configured soak time. Whenever the ± 
deviation value is exceeded, the soak timer stops until the 
process variable gets within the ± deviation value. While the 
soak timer is halted, “R” and “H” will alternate in the upper 
display. When the PV gets within the ± deviation value, the 
timer will resume and a steady “R” will appear in the upper 
display. 
There are no guaranteed soaks whenever the deviation value 
is configured to 0.00 (that is, soak segments start timing soak 
duration as soon as the soak setpoint is first reached, 
regardless of where the process variable remains relative to 
the soak segment). 
The decimal location used here corresponds decimal 
configuration chosen in the Display Set up group.