Properties Of The Position Controller Software; Functions I; Functions Ii - Burkert 8791 Manuel D'utilisation

Type 8791
Function
7.4. properties of the position controller software
7.4.1. functions i
• Activation via DIP switches
• Parameter setting via communications software
additional function
Sealing function
CUTOFF
Correction line to adjust the operating characteristic
CHARACT
Effective sense of direction of the controller nominal
value
1)
DIR.CMD
1)
DIR.CMD can be accessed in read-only mode via the communications software.
This function is set via the DIP switch only, as the function has no other parameters.
7.4.2. functions ii
• Activation and parameter setting via communications software
additional function
Standard signal for set-point value
INPUT
Effective direction of the actuator
DIR.ACTUATOR
Signal split range
SPLITRANGE
Mechanical stroke range limit
X.LIMIT
Opening and closing time
X.TIME
Position controller
X.CONTROL
Safety position
SAFEPOSITION
effect
Valve closes tight outside the control range. Specification
of the value (as %) from which the actuator is completely
deaerated (when 0%) or aerated (when 100%)
(see chapter entitled "9.3.2. Function of the DIP
switches").
The process characteristic may be linearised
(see chapter entitled "9.3.2. Function of the DIP
switches").
Reversal of the effective sense of direction of the set-point
value (see chapter entitled "9.3.2. Function of the DIP
switches")..
effect
Select set-point value standard signal.
Assignment of the aeration state of the actuator
chamber to the actual position.
Standard signal as % for which the valve runs through
the entire mechanical stroke range.
Limit the mechanical stroke range.
Limit the control speed.
Parameterize the position controller.
Definition of the safety position.
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