For example, an analogue signal of 4...20 mA corresponds to the pressure of 0...10 bar.
P3.12.1.7 PROCESS UNIT DECIMALS (ID 1035)
Use this parameter to set the number of decimals for the process unit values.
For example, an analogue signal of 4...20 mA corresponds to the pressure of 0...10 bar.
P3.12.1.8 ERROR INVERSION (ID 340)
Use this parameter to invert the error value of the PID controller.
P3.12.1.9 DEAD BAND HYSTERESIS (ID 1056)
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.
P3.12.1.10 DEAD BAND DELAY (ID 1057)
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
B
C
D
E
Fig. 37: The Dead band function
A. Dead band (ID1056)
B. Dead band delay (ID1057)
C. Reference
D. Actual value
E. Output locked
PARAMETER DESCRIPTIONS
VACON · 167
24-HOUR S358 (0)201 212 575 · EMAIL: [email protected]
10
Содержание 100 HVAC
Страница 1: ...vacon 100 hvac ac drives application manual ...
Страница 2: ......
Страница 6: ...VACON 6 TEL 358 0 201 2121 FAX 358 0 201 212 205 ...
Страница 200: ......