Version no. Description
1.0.7.0 A new Aux output function Running at max cap. has been added. With this
function the Aux. output is set active when Unisab III is running at maximum
possible capacity. See subsection 3.5.6. Aux. output for description.
The service timer Since Start is now logged in the picture History/Shutdowns/
Control State.
The Heating element DO status is now logged in the picture History/Shut-
downs/Output State.
The Emergency stop DI status is now shown in the picture History/Shutdowns/
Input State.
The Quick set-up configuration menu has been changed so it will not always
perform a factory reset after a parameter change but may now for most pa-
rameter changes just make a software restart. See section 6.4. Configuration
for description.
When selecting refrigerant type R000 it was not possible to set the low alarm
limit or the low shutdown limit lower than 0.1°C or higher than 11.6°C. This
has now been corrected.
If Profibus Tiny was selected a false shutdown Low suction pressure was
shown in the Shutdown picture but only if no “real” shutdown was active. This
has now been corrected.
For the limiter function Discharge press overload the shutdown timer would
count down when the pressure was “higher than or equal to” the high alarm
limit. This has now been changed to just “higher than”. It now corresponds to
the conditions for the limiter function itself.
For the limiter functions Motor current overload and Motor power overload the
shutdown timer would count down when the current/power was “higher than
or equal to” the SP1 or SP2 limit. This has now been changed to just “higher
than”. It now corresponds to the conditions for the limiter function itself.
In the Setup/Multisab picture the parameter Parallel offset was neither shown
nor possible to change for Rotatune Screw and Rota Recip compressor types.
As these types also operate in parallel operation, this has now been corrected.
For Screw, Screw Rotatune and Recip Rota compressors the P-band factors for
the Start delay and Stop delay timers did not work correctly. This has now
been corrected.
In Multisab a Rotatune slave compressor is started, i.e. the Start Delay timer
starts counting when there is need for more capacity and the Master regulator
is outside the neutral zone and the preceding Rotatune compressor is running
above 95% capacity. This capacity limit is now raised from above 95% to
above 98%.
Troubleshooting
300/319
Engineering manual - Unisab III 1.10
001930 en 2014.09
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