9.9.7
Second Group
Group 2 ON value
Second group
“
indirectly controlled
”
(picture A)
Analog output
“
AnalogOut 1
”
in IO Setup function
|
5 A
|
= group control is programmed.
This output is employed as the default signal for a speed controller. If the default signal
or the regulation deviation exceeds the group 2 switch-on point, group 1 is reduced to
“
n-min group 2
”
. Starting here, both groups run parallel at maximum power.
Second group
“
100 % energized
”
(picture B)
Relay output (K1 or K2) in IO Setup function
|
8K
|
= group control is programmed. A
contactor is triggered via this relay contact, which directly switches the fans of
the second group to mains voltage. If the default signal or the regulation deviation
exceeds the
“
Group 2 ON value
”
switch-on point, the relay for the second group
switches on and the speed of the
fi
rst group is lowered to an adjustable minimum
value. After that, the speed of the
fi
rst group increases back up to maximum.
nmin at Group2
Controller
Master
N
Si/ Se
A
Controller
Slave
Si 0-10 V
N
0 .. 100 %
1
2
0 .. 100 %
Controller
Master
N
Si/ Se
B
C
ON / OFF
N
0 / 100 %
1
2
0 .. 100 %
10.05.2007
v_zweite_gruppe.vsd
N
Line
Si
Signal
Se
Sensor
C
Contactor
9.9.8
Reverse action of the control function
Val>Set=n+
For the effect of the regulation there are two functions:
•
ON
for
“
Val > Set = n+
”
increasing Fanlevel for increasing actual value over
Setpoint.
•
OFF
for
“
Val > Set = n+
”
increasing Fanlevel for decreasing actual value below
Setpoint.
For special applications an external switch over of the control function is possible (
IO Setup).
Factory setting depending
on selected mode
Example for temperature control (Idealized principle diagram)
Mode
Controller
function
nM
100 %
I
S
R
R
OFF
ON
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v_umkehr_regelfunktion.vsd
nM
Motor speed
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
Operating Instructions
Fcontrol
–
model series FXET4/6/10AMQ
Programming
L-BAL-E079-GB 1706 Index 008
Part.-No.
47/87
