Itsmoked, thanks! overloading causes the motor to fail as its spin faster than the rated rpm.
Jraef, line voltage is 440V.
"..the more, the merrier" Genghis Khan
hello there, i got an erratic reading of vegaflex 81 which measures the level of LPG Economizer Tank.. This tank is use either FLSC (flash liquid sub-cooling) or LSC operation. 2 out of 3 (separate) tanks has experience erratic reading where the level control valves restlessly moving 0 to 80%...
Junaid16, i had recent problem with this stuff.
400V/50HZ motor, 440V/60HZ VFD output control by pot full scale. Burn out motor winding, i suspected the motor over-voltage/over-frequency due to mis-configuration of VFD setting. Prior replacement of the motor, i set VFD output 400V/50HZ with...
Hello, there!
Anyone who is familiar with Kongsberg Automation, can you crack for me the Basis of ADC counts? I tried using mobile apps for ADC to calculate as per table below but i am confuse.
As shown on attachment..
"..the more, the merrier" Genghis Khan...
John2025, i think i am in the right adjustment for my voltage output reducing 100%(440v) down to 91% (400v)setting. Thank you for confirming me this.
But i am not sure this make sense for vfd in v/f mode controlled by pot. Anyway, i had measured the vfd output, 400v/50hz for pot full range...
Hello, anyone who had good comparison or alternative for Burckhardt compressor for LPG/LNG reliquafication plant?
Thanks
"..the more, the merrier" Genghis Khan
I saw one commissioning of generator: Maximum load is a composite calculation on each motor started at a time,as;
sQRT3 x V x starting current x PF at starting, Starting current depends starting methods (DOL, Y/D, Auto-trans, etc.)
"..the more, the merrier" Genghis Khan
Hello, I got a burn out motor winding due to mis-configuration of VFD setting. Yet, i could never find motor data setting on VFD for Voltage rating, however only percent voltage output (VFD) is available.
So i tried to play along this voltage output as well as frequency adjustment to coincide...
Thanks, Keith. Thinking of your comments.
Unfortunately, i don't have access to EPROM programmer.
I realized that these controller were 16 units in operation. I believe a spare set is somewhere hidden. Luckily, I just found 2 spare EPROM on the shelf.. All labeled and scribbled with same...
Yeah, Mike you are right. I don't want to explore the unknown. I bet, it is time to call the service expert.
Thank you for your comments. You have shared another good insights.
"..the more, the merrier" Genghis Khan
Thank you Mike.
I have the configuration default setting from makers compiled in the instruction manual. I got same EEPROM from new spare attach on CPU print. As you had suggested, i am planning to install and mount it to the cpu print. Though it takes time, I guess i am going to manually...
Here's the complete set of the controller.
If you think that replacing EEPROM would solve the issue. Then that's one thing for sure i miss! need to replace that EEPROM.
"..the more, the merrier" Genghis Khan...
Hello Mike.. here's the EEPROM and CPU card.
"..the more, the merrier" Genghis Khan
http://files.engineering.com/getfile.aspx?folder=6868ef57-b98e-445c-b3bf-57a98ea2a2ab&file=Photo1766.jpg
yeah very odd indeed. unisab II maker SABROE was bought by YORK Refrigeration. Aalborg boilers MISSION OC were fitted with this kind of controllers.
Mike, my guess is that this EPROM was packed with different SW preloaded program. I scrolled down and hard reset the controller. Upon restart...
Thanks for your reply. Mike, it is a unisab II controller for Aalborg Marine Boiler. Good point for such device you mention however i am solely dependent on operational observation of the boiler status and diagnostic functions. According to data sheet, such EPROM has 2MB capacity and the...
