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Setpoint
Ramp/Soak Programming and Operation -
Setpoint
Program Contents
Release M
DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
151
April 2017
6.2 Setpoint
Program Contents
What you will configure
You will configure all the data that is relevant to each ramp and soak segment for a given setpoint versus
time program (profile). The recorder will prompt you through the sequence of segments and associated
functions. These prompts and functions are described below.
Recycle number
The recycle number allows the program to recycle a specified number of times from beginning to end.
Range = 0 to 99
Guaranteed soak
A SOAK DEV (soak deviation) parameter is provided. If its value is not zero, then soaking will be frozen
for each segment until the difference (plus or minus) between PV and SP is less than or equal to the value
of SOAK DEV.
There are no guaranteed soaks whenever SOAKDEV = 0. In this case, 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 setpoint during the duration of the segment.
The decimal location corresponds to input 1 decimal selection.
Profile number
The profile number specifies which of up to six profiles will run. Up to 6 profiles can be configured out of
any even number of consecutive segments from the 36 segments configured.
Program state
The program state selection determines the program state after completion.
The selections are:
DISABL = program is disabled
HOLD = program on hold
Recovery
If Recovery is enabled the setpoint program will continue from where it left off after the last power down.
Program End State
This determines the status of the recorder upon completion of the profile. The selections are:
LAST SP = hold at the last setpoint in the program
F SAFE = Manual mode, Failsafe Output