Burkert Type 8611 - Manual (Page 42)

42
FunctionsoftheProcessOperatingLevel
11.9. VALV – Manual opening and closing of the
connected actuating elements
If the VALV menu option is selected, the controller is stopped and the actuating element remains in the last
position. The manipulated variable can now by increased or lowered relatively to the last position by pressing
the key.
The display in the VALV menu option depends on the control variable set in the MODE menu:
• MODE = SCV, 0 - 10, 4 - 20, 2P - T, 3P - T (Reset time T
n
activated, T
n
> 0)
• MODE = PCV, 2P - T, 3P - T (Reset time T
n
deactivated, T
n
= 9999)
Back to operating state
AUTOMATIC
VALV
SET
150
L/H
055
PRZ
MODE = SCV, 0 - 10, 4 - 20, 2P - T, 3P - T (Reset time T
n
activated, T
n
> 0)
In the case of cascaded control, the process value and
the flow-rate are displayed alternately
Actuating of Valve 1 (VLV1) (Increasing of the manipulated
variable, Bargraph length increases from left to right 3) 4)
Actuating of Valve 1 (VLV1) (Decreasing of the manipulated
variable, Bargraph length decreases from right to left 3) 4)
Display manipulated variable ( 4 – 20, 0 – 10 or PRZ)
Display process value
When leaving the VALV menu option, the last selected
manipulated variable is taken over.
Figure 24: VALV; Manual opening and closing of the actuating element
3) Changing the manipulated variable
Each time the key is pressed: MODE = SCV, 2P - T, 3P - T by 1%
MODE = 4 - 20 by 0.2 mA
MODE = 0 - 10 by 0.1 V
Continuous pressing of the key > 80 ms: Quick adjustment of the manipulated variable
4) The manipulated variable can be changed between 0 and 100 %.
Only for MODE = 3p - T the manipulated variable can be changed between -100 % and +100 %.
-100 % = Valve 2 is controlled by 100 % pulse duty factor
+100 % = Valve 1 is controlled by 100 % pulse duty factor
english
Type 8611