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0 .. 100 %
3
4
1
2
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1 external Signal
2Setting
3 Rampup time
4 Rampdown time
9.12.9
Setting Derating Alarm and Temperaturemonitoring
The device has integrated temperature monitoring to protect the device from damage caused by
excessively high interior temperatures.
In case of a temperature increase above the predetermined threshold value the level-control is linearly
reduced until the stated threshold temperatures are reached. To prevent a shut down of the entire
system (in this operating mode, allowable for the controller), no alarm indication occurs via the relay
contacts until the preset threshold value (due to an excessively high interior temperature) is reached
during reduced operation!
Derating Alarm
Derating Alarm
The factory preset for the
“
Derating Alarm
”
is 5 %.
I.e. the device level-control due to excessive interior temperatures only
amounts to 5 % of the maximum possible. Therefore a message is issued via
the programmed operational or indicator relay.
Setting range: 1...95 %
9.12.10
Suppression of speeds
Suppression of up to three speed ranges.
Under certain circumstances, it is possible to prevent disturbing noises that can arise at certain
speeds due to resonances.
Example for suppression of 2 ranges (Idealized principle diagram)
A
D
P
50 %
50 %
R
0 %
I
S
100 %
I
35 % max
15 % min
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1
2
A Fanlevel
S Setpoint
R Pband
D Speed controller: setting signal
P P-controller: control deviation
Setting depending on device type in: %,
Hz, rpm
Operating Instruction
Econtrol
–
model series EXDM
Programming
L-BAL-E008-GB 0945 Index 005
Part.-No. 00156742-GB
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