TZIDC, TZIDC-200
| COI/TZIDC/TZIDC-200-EN 7
2.3
Menu levels
The positioner has two operating levels:
Operating level
On the operating level the positioner operates in
one of four possible operating modes (two for
automatic control and tw o for manual mode).
Parameters cannot be changed or saved on this
level.
Con
fi
guration level
On this level most of the parameters of the
positioner can be changed locally. The PC is
required to change the limit values for the
movement counter, the travel counter, and the
user-de
fi
ned characteristic curve.
On the con
fi
guration level the active operating
mode is deactivated. The I/P module is in neutral
position. The control operation is inactive.
NOTE
Property damage
During external con
fi
guration via a PC, the positioner no
longer responds to the setpoi nt current. This may lead to
process failures. Prior to extern al con
fi
guration, always move
the actuator to the safety position and activate manual
adjustment.
2.4
Operating modes
2.4.1
Operating mode 1.0: Control with adaptation
Controlling operation with automatic adaptation of the
control parameters
When the
P1.0CTRL_ADP
positioner is operated in "Adaptive
Mode", the control parameters are automatically optimized to
the operating conditions in small increments. This is especially
helpful if valves and
fi
ttings could not be operated with
reference conditions while the Auto Adjust function was in
progress.
Since self-optimization in "A daptive Mode" is subject to
several factors during operatio n and mismatches could result
over a longer period, we recommend that this operating mode
only be activated over severa l hours and be followed by the
mode
P1.1
CTRL_FIX
.
The valve position is indicated as a percentage of the
operating range (from 0 ... 100%).
2.4.2
Operating mode 1.1: Control without adaptation
Controlling operation with
fi
xed parameters
This is the normal recommended operating mode.
In contrast to the operating mode
P1.0 CTRL_ADP
, the
control parameters are not automatically adjusted.
The valve position is indicated as a percentage of the
operating range (from 0 ... 100%).
In both control modes
1.0
and
1.1
, several values can be
displayed besides the current actuator position:
Setpoint display
1. Press and hold the
©
button.
The setpoint is displayed.
2. Brie
fl
y press
ENTER
.
The setpoint display is toggled between the setpoint current at
the input terminals in mA and the setpoint as a percentage of
the stroke range.
Temperature display
1. Press and hold the
ª
button.
The temperature inside the case is displayed.
2. Brie
fl
y press
ENTER
.
3. The temperature display is toggled between °C and °F.
Display of control deviation
1. Press and hold the
©
and
ª
button.
The control deviation is displayed as a percentage (%) of the
stroke range.
conf
mA
%
C
°
conf
mA
%
C
°
conf
mA
%
C
°
conf
mA
%
C
°
conf
mA
%
C
°
conf
mA
%
C
°
conf
mA
%
C
°
