SystemAir REPT10, Руководство по эксплуатации

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Msco = OFF
(factory setting)
If no “ Min. speed ” is adjusted, the fan stops with
reaching the desired value.
If
“ Min. speed ” is adjusted (e.g. 20%), then no dis-
connection of the fan takes place. I.e., always a
minimum ventilation is ensured (fan does not go
under setting
“ Min. speed ” ).
Msco. e.g. -2.0 K
It takes place a disconnection from setting “ Min.
speed ” to “ 0 ” , if the given difference is reached re-
lated to the desired value.
At a plus value (+) before reaching the desired value
At a minus value (-) after falling below the desired
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
9.8.8 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
9.8.9 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).
Operating Instructions
REPT6 / REPT10
Programming
L-BAL-E081-GB 1237 Index 002 Part.-No. 00163316-GB
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