\\Elmacron-server\Gemensam\Instruktioner\Instruktioner i W ord\1005RE\Engelska\1005RE-ORP%E.doc
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Senast utskrivet 2007-10-11
11:16
4.4 I-TIME
The integration time (I-time) can be set between 0 and 2000 seconds.
The set time starts when the measured value exceeds one of limit 3 or 4 (only when proportional
regulation is chosen). After expired I-time the frequency is doubled (at frequency regulation) or the on-
time is doubled (at PWM-regulation) compared with P-regulation. The doubling is performed with an
interval corresponding to the set I-time until either the measured value is within the limits or that max
frequency (alt. max on-time ) is reached. The regulation is then performed with max frequency (alt.
max on-time) until the measured value is within the limits.
In the example below the P-band is 80% (80 % -units), max frequency 180 Hz, I-time 600 seconds
and frequency regulation chosen as regulation form. The limit value is 20%.
20
40
60
80
100
120
140
160
180
frequency(Hz)
time (sec)
0
0
600
1200
1800
%
P-Band
20
40
60
80
100
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