Version no. Description
1.0.7.0 In the Setup/Session/User interface picture the parameter Rem. Man. Allowed
will now be set to No as default.
The maximum setting for Level control regulator, proportional band (PB) is in-
creased from 50% to 200%.
For SABCube the incorrect text “Drive link error” was displayed when the rpm
limiter was active. This has been corrected in the text files.
1.0.8.0 For RecipRota, i.e. reciprocating compressors mounted with frequency drive, a
new and softer type of coupling is introduced. This soft coupling type requires
that the compressor is unloaded in a symmetrical way. This restriction limits
the number of unloading steps. As a consequence a new unloading function
with fewer unloading steps has been implemented in Unisab III. See
3.4.6. Rota (VSD).
For HPO high pressure reciprocating compressors the oil pressure transmitter
can now be configured to 25 bar or 59 bar. From 2011 HPO will be delivered
with a 59 bar oil pressure transmitter.
It is now possible to delay the PMS Start request output signal between 0-15
minutes - after compressor stop. (May be used for pump after-run). The PMS
Start request feedback timer can now be adjusted up to 60 minutes. It is now
possible to set the PMS Start feedback signal to be a fixed signal (May be used
for pump after-run). If the Start request output signal is ON and the PMS
feedback gets off (after having been ON) a PMS error shutdown is given.
The Korean language can now be chosen.
Software version and serial number is now saved in each configuration .xml
file.
When the Recip Rota "Step" function was chosen the Discharge temperature
limiter for reciprocating compressors did not work correctly. The Total unload
timer would sometimes fail and the alarm did not reset automatically. This has
now been corrected.
The measured value for Motor Power is now, together with Motor current, dis-
played in the shutdown picture Compressor Motor overload.
The following Multisab situation for screw rotatune compressors has now been
corrected. The system would sometimes get stuck in a situation where com-
pressor 1 was running 100% with compressor 2 and 3 both running at mini-
mum load. They (compressor 2 or 3) did not ramp up when capacity was nee-
ded. The start delay timer would continue to start and reset. The system could
be brought out of this Multisab deadlock situation by switching one of the
compressors into manual.
For a reciprocating compressor running at 100% due to the Capacity down
blocked signal set high but with no capacity need, it is observed that the timer
Delay before start was frozen at 9 seconds in the Info bar. This has now been
corrected.
Troubleshooting
Engineering manual - Unisab III 1.10
001930 en 2014.09
301/319
To Next Page
Loading...
