Future Design MCT-CM, Руководство пользователя

Страница: 105 / 247

MCT-CM
105
NOTE: The time is entered in a 24-hour format. To convert time from a 12-hour format (AM/PM) into 24-hour
format, add 12 to the hours for PM time. For example, 2pm will be a value of 14 (2 + 12) for hours.
A time of 5:30pm will be 17 hours, 30 minutes.
6.1.6 Setting Guaranteed Soak Limits
The guarantee soak limits are used to set the control tolerance for each loop during guaranteed soak steps
when in ramp/soak program operation. When a process variable deviates from its set point by more than its
soak limit value, the program timer will stop until the process variable re-enters the soak band. These limits
apply to every step in the program and only need to be set once.
To change a limit, touch the desired loop in the list, enter the new limit setting on the numeric keypad and press
‘Done’ when finished. The new limit value will then be shown in the list view for the selected control loop.
NOTE:
If soak limit is set too tight, i.e., a very small deviation value from set point, it could prevent the program
from operating as desired because the process may not be able to be controlled to such a tight limit
setting.
6.2 Starting an Automatic Ramp/Soak Program
All automated program operating functions are accessed via the Program Operation screen. This screen can
be accessed by pressing the “Program Operation” button on the Loop view or Overview screens or by pressing
the “Run” button on the program Entry screen.