Engineering manual - UniSAB III 1.10.8
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001930 en 2021.06
Troubleshooting
Version no. Description
1.1.0.1
The Chiller function for DX evaporator expansion valve regulation is now released.
A functionality for using an external EX-approved keyboard, using a Modbus connec-
tion, has been introduced.
By configuring Danbuss to No, it is now possible to disable some Danbuss master
functions. These functions must be switched off in order to comply with the RCM con-
troller used on some old marine installations.
When using the e-mail user event function it is now possible to attach a CSV file which
contains a log of actual UniSAB III operating data to the dispatched alarm or shutdown
e-mail. The CSV file data can be displayed as a graphical view in the new UniSAB III
iPhone App.
For SAB 120, 151, 157 HR, 193, 233, 283 and 355 with oil pump, a problem has been
corrected. If the Oil log alarm timer was set to zero, the oil pump would run forever.
Now the oil pump does not start if the timer is set to zero.
For old Sabroe SAB 163 and 202 screw compressors with variable VI and VSD, a prob-
lem with the Vi slide positioning has been corrected. The problem arose if the compres-
sor started with high suction pressure, so the capacity could reach 100% with a Vi
position at 0%. In such cases the Vi slide would be fixed in 0% until UniSAB would
leave Vi mode, i.e. the capacity slide would have to decrease to a capacity below 98%
before the Vi slide was moved.
For screw compressors a problem has been corrected. Setting the configuration Pres-
sure range to 25/59/25/25 did not work; it would incorrectly set the range to 25/59/59/
59.
For TSMC/TCMO reciprocating compressors, a problem has been corrected. Setting
the configuration Press/temp to kPa/°C did not work correctly for Intermediate pres-
sure. The Intermediate pressure in kPa was not converted correctly to °C/R. This prob-
lem concerned all refrigerants.
For HPO, CMO and TCMO reciprocating compressors, the text 'Filter Pressure' has
been removed from the main menu.
For the SAB HMI application, a problem has been corrected. After viewing the Ses-
sion/E-mail page, the application would show an error message when it was closed.
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