Mode
Controller
function
I
S
R
R
OFF
ON
28.03.2013
v_umkehr_regelfunkt_cxe_master.vsd
80
70
60
50
40
30
20
10
90
100
A
n
a
lo
g
O
u
t
[V
]
1
2
3
4
5
6
7
8
9
1
0
M
O
D
B
U
S
O
u
t
[%
]
MODBUS Out:
speed setting over MODBUS
Analog Out:
speed setting over analog output 0 - 10 V
R
Pband
S
Setpoint
I
Actual value
OFF
for Val>Set=n+ = heating function
ON
for Val>Set=n+ = cooling function
1.01
non
2.01
...
ON
3.01
...
ON
4.01
...
OFF
5.01
...
OFF
6.01
...
OFF
9.9.8
Controller con
fi
guration
The
“
controller con
fi
guration
”
is automatically carried out during selection of the application related
mode of operation (Base setup). The factory presets in accordance with the mode of operation are
based on many years of experience, which is suitable for many applications. Under special circum-
stances, these can be individually adapted (
Menu group
“
setting
”
).
Controller Setup
The type of control determines the method with which the controlled value behaves in
case of a difference between the target and current values. For this, the control
technology has standard algorithms, which consist of a combination of three methods:
Selection P, PID:
•
P
control (Proportional component, proportion of the absolute deviation)
•
I
control (Integral component, proportion of the sum of all deviations)
•
D
control (Differential component, proportion of the last difference)
Display for operation with two control circuits:
“
1.Controller type
”
for control circuit 1
“
2.Controller type
”
for control circuit 2
P
Type of control
With pure P controllers (controller type
P
), the following described settings do not have any function.
If needed, the most suitable combination for the respective control system can be determined from these
proportions.
The control con
fi
guration (KP, KI, KD, TI) is identical for both control circuits in operation with two control circuits.
Fine adjustment is possible for each control circuit by the separate
“
Pband
”
setting.
Controller Setup
P-component = reaction time
Setting range: 0 - 200 %
smaller = more slowly
bigger = faster
50 %
KP
Controller Setup
I-component = accuracy, correction time
Setting range: 0 - 200 %
bigger = faster
smaller = more slowly
50 %
KI
Operating Instructions
UNIcon MODBUS Master
Programming
L-BAL-E207-GB 1723 Index 003
Part.-No.
56/114