7.4
Dipswitch for operation as P-controller:
2.01
,
2.02
,
3.01
,
3.02
For operation as a P-controller (DIP
|
1
|
=
|
ON
|
) the actual value measured by the sensor is compared
with the nominal value that has been set. The output voltage and hence the rotational speed of the
connected motor automatically change as a function of the parameter settings.
The desired function is determined with dipswitch
S1
.
Position factory setting for all dipswitches =
|
OFF
|
.
DIP
Function
DIP =
|
OFF
|
DIP =
|
ON
|
1
Selection:
Speed controller / P-Controller
RPM controller
P-Controller
2
Pressure control / Temperature
control
Pressure control
Temperature control
3
Signal type at E1 (E2)
for Pressure control: 4 - 20 mA
for Temperature control: TF..(KTY81-210)
for Pressure control: 0 - 10 V
for Temperature control: PT1000
4
Control function (e.g.
“
Cooling
”
/
“
Heating
”
increasing modulation for increasing actual
value (
“
cooling
”
)
increasing modulation for decreasing ac-
tual value (
“
heating
”
)
5
Minimum speed cut off
not active
active
6
Hardstart function
not active
active
7
Input E2
Input E2 not active
Input E2 active
8
Function signal output
“
Analog
Out 1
”
Constant voltage
“
+ 10 V
”
for external
potentiometer
0 - 10 V
modulation 0 - 100 %
9
60 Hz allocation
automatic detection
60 Hz
fi
x
10
Phase failure detection
Detection active
Detection not active
7.5
Minimum speed cut off DIP 5
7.5.1
For mode Speed controller
1.01
If no
“
n-min
”
is adjusted,output voltage goes continuously with reduction of the regulating variable
down to
“
0
”
(cutoff below approx. 2 % regulating variable).
Without minimum speed cut OFF (DIP 5 =
|
OFF
|
= factory setting)
•
If minimal speed
“
n-min
”
is adjusted (e.g. 20%), then no disconnection of the fan takes place. I.e.
always a minimum ventilation is ensured (fan does not go under setting
“
n-min
”
).
With minimum speed cut off (DIP 5 =
|
ON
|
)
•
Cutoff below approx. 2 % regulating variable from sestting
“
n-min
”
to
“
0
”
.
•
Switch on again for a regulating variable above 5 % (to setting
“
n-min
”
).
Functional diagram
setting for operation as Speed controller
7.5.2
For operation as P-Controller(from
2.01
)
Without minimum speed cut OFF (DIP 5 =
|
OFF
|
=
factory setting)
•
If no
“
n-min
”
is adjusted, the fan stops with reaching the
desired value.
•
If
“
n-min
”
is adjusted (e.g. 20 %), then no disconnection
of the fan takes place. I.e. always a minimum ventilation is
ensured (fan does not go under setting
“
n-min
”
).
With minimum speed cut off (DIP 5 =
|
ON
|
)
•
When the setpoint is reached, the modulation is reduced
to
“
0 %
”
, or to the set value if
“
n-min
”
is speci
fi
ed.
•
For actual value = setpoint disconnection takes place
from
“
n-min
”
to
“
0
”
. Hysteresis (ON / OFF) approx. 2.5 %
of 100 % set value.
nM
50 %
100 %
I
Min.
Min. 35 %
Max. = 100 %
20 °C
S
7 K
R
27 °C
-2.0 K
10.05.2007
v_min_luft_abschalt.vsd
Minimum speed cut off (idealized principle diagram)
nM
Motor speed
S
Setpoint
R
Pband
I
Actual value
Operating Instructions
Dcontrol
–
model series PKDM6..80
Base setup
L-BAL-E143-GB 1914 Index 009
Part.-No.
22/40
