SECTION 14 - PROFILERS
The profiling capability basically consists of a functional block that modifies the setpoint(s) and event outputs over time. The setpoint profiling is linked to the first four setpoints and the four process values. Event outputs are merely actuators that can be used for any purpose, but typically drive relay outputs.
The Profile Settings section, included in CONFIGURATION, is used to specify some basic profile configuration data that applies to every profile. The Profile Entry section, accessed via the SCROLL key, is used to enter profile data; ramp and dwell times, setpoints, event outputs, and other associated data. A Profile Control section, accessed via the DISP key, provides the means to initiate/abort a profile, change the run/hold state, and continue an aborted profile.
A profile is made up of one to eight segments, with each segment consisting of a ramp and a dwell. The ramp will change the setpoint value from its current value (or the current process value on the first ramp) to the value specified over a designated time period (ramp time). The dwell maintains that setpoint for a designated time period (dwell time). The event outputs will change state at the beginning of each ramp and dwell as specified. Each setpoint is assumed to be tied to its respective PV (setpoint 1 used with process value 1). Since there are four control loops and four process values, only the first four setpoints can be profiled.
14.1 PROFILE ENTRY
To enter the Profile Entry section, from the Normal Display, press the SCROLL key until PROFILE ENTRY is seen in the lower display line. If PROFILE ENTRY is not displayed, then it has been disabled. Refer to Section 9, Enables and Passwords, for instructions to enable Profile Entry.
1.With PROFILE ENTRY displayed, depress the DOWN key and PROFILE NUMBER will be displayed. Selections
In the following paragraphs, the displayed prompts will begin with Pxx or PxxSy, where xx is the profile number and y is the segment number.
2.Press the SCROLL key to advance to the next parameter, Pxx DESCRIPTION. Selections - Text. Refer to Section 3.4.2, Changing Text, for instructions.
3.Press the SCROLL key to advance to the next parameter, Pxx SETPOINTS TO PROFILE. Selections
4.Press the SCROLL key to advance to the next parameter, Pxx NUMBER OF SEGMENTS.
Selections
THE FOLLOWING ARE REPEATED FOR EACH SEGMENT.
5.Press the SCROLL key to advance to the next parameter, PxxSy RAMP TIME, displayed as hhh:mm:ss where h is hours, m is minutes and s is seconds. Press the MOD key to change, then UP/DOWN to desired number, then press the ENTER key. NOTE: ENTER must be pressed after changing
(as necessary) each unit of time; hours, minutes, and seconds.
6.Press the SCROLL key to advance to the next parameter, PxxSy SETPOINT 1. Press the MOD key to change, then UP/DOWN to desired setpoint value, then press the ENTER key.
Section 14 |
| Edition 3 |
Rev G
