Engineering manual - UniSAB III 1.10.8
001930 en 2021.06
325/346
Version no.
Description
1.0.9.0
For screw compressors the
Oil Separator temp value
is now shown in the Shutdown
log
History/Shutdowns/Measured Values
.
When displaying a pressure value in kPa a decimal point was shown and the value dis-
played was x0.1 to low. This has now been corrected.
When running TSMC/TCMO with frequency drive the intermediate pressure liquid in-
jection cooling control did not work correctly. This has now been corrected.
When running TSMC/TCMO the
Process out temperature
limiter did not work correctly.
Capacity step reduction at process out temperature under low alarm limit or tempera-
ture over high alarm limit was not activated. This has now been corrected.
When using the chiller function for HP/LP level control, the regulator output signal did
not work correctly when a limiter was activated, no matter if the limiter was active or
passive. This has now been corrected.
The Multisab system could fail when one VSD controlled compressor was regulating in
sequence with one normal slide regulated screw compressor. In a down or up regula-
tion situation the system could “freeze” and would not react to changes in the meas-
ured signal. This error has now been corrected. The problem only relates to version
1.0.8.3 and does not exist in earlier versions.
1.0.9.3
In some situations UniSAB III could make a restart. The cause of this (repetitive) restart
was that a program part would write to and corrupt a file.
In some situations UniSAB III could reset configuration files to default values. The
cause of this factory reset of configuration files was that a program part would set a re-
set flag when updating the automatic display contrast settings introduced in version
1.0.9.0. Both problems have now been solved.
For CMO Rota with new Centa (soft) coupling, the unload configuration which is set to
VSD Normal
or
VSD Total
would change to
Additional step
after a power off. This prob-
lem has now been solved.
Summary of Contents for SABROE Unisab III Control
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