CP6, CP7, or CP8: Series Programmable Controller
Version 1.0
Page 17
PROP 2
Press the ENTER key to move the cursor to the set point data field. Use the Up or Down Arrow
key to increase or decrease the value. When the correct value is displayed press the ENTER key to
enter the set point, the cursor will move to the next data field. Press the ENTER key to move the
cursor to the upper left hand corner and the Up or Down Arrow key to scroll to the next set point
screen or press the MENU key to return to the System Status screen.
Enter the start and end points for the demand, which is based on the temperature set point and
proportional band. The
Start
set point is the minimum proportional signal and the
End
set point is
the maximum proportional signal. As the actual reading moves from the set point within the
proportional band the signal will change proportionally to bring the actual reading back to the set
point.
PROP 3
Press the ENTER key to move the cursor to the set point data field. Use the Up or Down Arrow
key to increase or decrease the value. When the correct value is displayed press the ENTER key to
enter the set point, the cursor will move to the next data field. Press the ENTER key to move the
cursor to the upper left hand corner and the Up or Down Arrow key to scroll to the next set point
screen or press the MENU key to return to the System Status screen.
TYPE is set to either
P
(PROPORTIONAL) or
PI
( PROP + INTEGRAL). If PROP + INTEGRAL
control is chosen, the user must enter the INTEGRATION TIME> as well. Also, enter the
proportional band for control. Propor integral control works as follows: When the actual
reading is away from the set point for more than the integration time, the proportional signal
strength is increased to help drive it back to set point.
Control setpoints 2
Ramps Start End
Cooling> 000% 100%
Heating> 000% 000%
Control setpoints 1
Bands
Type Int HU DH
Temp>P 000s 00 00%
