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Start-up
Type 3281
8.5
Settings for positioners and process controllers
8.5.1
INPUT/OUTPUT - selected standard signal
Under this menu option, enter the signal used for the set-point value or actual value.
- Current 4...20 mA (for digital variant only actual value)
- Current 0...20 mA (for digital variant only actual value)
- Voltage 0...10 V (for digital variant only actual value)
- Voltage 0...5 V for digital variant only actual value)
- CANopen/büS (only for digital variant)
- Frequency (only for digital variant)
8.5.2
SIGNAL. SIM - Simulation of the set-point value
This function can be used to simulate the set-point value. The selected set-point value source is ignored by
the device during the simulation. The following wave forms can be entered:
Sinus
Sinus wave
Square
Square wave
Triangle
Triangle wave
Fixed
Manual input of a fixed set-point value
The following parameters can be set for the selected signal form:
Menu
option
Parameter setting
Schematic representation with sine wave
Offset
(zero point shift in %)
70%
50%
Offset in %
t
Amplitude
(amplitude in %)
70%
50%
Amplitude in %
t
Period
(Period duration in s)
70%
50%
Period in s
t
8.5.3
X.CONTROL - Parameterisation of the positioner, insensitivity
range (dead band) of the positioner
Input of the dead band in %, based on the scaled stroke/rotation angle range. This function ensures that the
controller does not respond until a certain control difference is reached.
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