Danfoss VACON 100 FLOW Series Application Manual page 237

VACON® 100 FLOW
Application Guide
Parameter Descriptions
11.15.1.6 (ID 1034) Process Unit MAX
Location in the menu: P3.13.1.6
Use this parameter to set the maximum value of the PID feedback signal. For example, an analog signal of 4...20 mA corresponds to
the pressure of 0...10 bar. The value in process units at a 0% feedback or setpoint. This scaling is done for monitoring purposes only.
The PID controller still uses the percentage internally for feedbacks and setpoints.
11.15.1.7 (ID 1035) Process Unit Decimals
Location in the menu: P3.13.1.7
Use this parameter to set the number of decimals for the process unit values. For example, an analog signal of 4...20 mA corre-
sponds to the pressure of 0...10 bar. The value in process units at a 0% feedback or setpoint. This scaling is done for monitoring
purposes only. The PID controller still uses the percentage internally for feedbacks and setpoints.
11.15.1.8 (ID 340) Error Inversion
Location in the menu: P3.13.1.8
Use this parameter to invert the error value of the PID controller.
11.15.1.9 (ID 1056) Dead Band
Location in the menu: P3.13.1.9
Use this parameter to set the dead band area around the PID setpoint value. The value of this parameter is given in the selected
process unit. The output of the PID controller is locked if the feedback value stays in the dead band area for the set time.
11.15.1.10 (ID 1057) Dead Band Delay
Location in the menu: P3.13.1.10
Use this parameter to set the time that the feedback value must stay in the dead band area before the output of the PID controller is
locked. If the actual value stays in the dead band area for a time set in Dead Band Delay, the PID controller output is locked. This
function prevents wear and unwanted movements of the actuators, for example valves.
A
C
D
B
E
Illustration 76: The Dead Band Function
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