KROHNE Summit 8800 Vol 2 - Manual (Page 154)

154 www.krohne.com 08/2013 - MA SUMMIT 8800 Vol2 R02 en
SUMMIT 8800 VALVES 11
Figure 165 PID valve
Reverse Flow reverse mode – yes or no
Process variable Process value to be controlled
Keypad setpoint Preset setpoint of the desired value
Proportional band Time based on present error
Integral action Accumlation of past errors
Deriviative action Predicition of future errors
Minimum output level Minimum valve output movement
Maximum output level Maximum valve output movement
Please note that the actual hardware valve connection must be defined as an analog output in
the hardware section (see volume 1).
The setpoint and the P, I and D values of the valve must also be defined (see also volume 3):
• As a fixed keypad value, entered above
• In the modbus list to remotely control the value
• On display to locally control the valve
Select the control ID as follows:
Figure 165 PID setpoint