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A few years back, after the European Gas Turbine outfit was acquired by GE (the Belfort, France, facility) the decision-making responsibility for Frame 9 (E- and F- and now HA-class machines) was given over to the GE Belfort engineering department. Of course--tried and true and time-tested...

Okay; so we now know when it started--though it's UNCLEAR why the hard disk had to be removed to make the Acronis back-up. For future reference, when making a back-up with an application or program like Acronis, one needs only to stop CIMPLICITY (yes; stop CIMPLICITY (or PROFICY Machine Edition...

So, JAMKAM seems to be be asking: How does an Allen-Bradley Powerflex 1305 work to vary the speed of the AC motor it is connected to? There is a formula which can be expressed in two different ways (solving for two different variables). F = (P*N)/12O or P = (120*F)/N Where: F = Frequency (in...

The really great thing about standards is: There are so many to choose from. And then there's this: "what is the bizarre history behind ...." How would you feel to open a huge control panel completely wired with grey switchboard wire, and no wire numbers/labels? and with a mix of 12 VDC, 24...

Doubt. Not a nice word. But, since it's being used in this thread, I have doubts about the information provided and the information that is missing. Where is the P&ID for the Seal Oil System? What has the OEM said about this issue of a prolonged drop in seal oil pressure during a pump...

It is extremely difficult to verify the polarity of the servo current(s) being applied to a liquid fuel bypass valve--there are no LVDTs and the valve stem is not visible. Compound that with the fact that if a Mark* IV or -V turbine control system is being used it is difficult to apply servo...

I sincerely question why ANY file has to be edited!!! When did this problem start? In other words, when did this problem become apparent--and most importantly what happened immediately before the time the problem became apparent???!!!??? A . bat file is a batch file--it executes a series of...

6BTurbineTech, Thanks for the update. We were wondering.

CAN YOU ANY ONE HELP ME WITH THIS ? Well, uh, ..., er, ..., you have no data showing on the Overview display. And, no Diagnostic Alarms in the Alarm Window. There is no communication with a Mark V panel, as shown by the has marks in the data fields. I would imagine any display elements that...

I believe the servo was replaced (from the original post). I haven't seen this from a brand new MOOG purchased from GE, but I have seen it on refurbished servos (not refurbished by Moog). I have removed servos which I had personally installed a couple of years prior and so I know the servo...

All, I think this is a much more serious problem--potentially--than originally thought (well, than I originally thought). CAN bus is a often-used communications protocol by many OEMs and manufacturers. And, from the literature ControlsGuy25 has provided the link to it seems that BRUSH is using...

cheedee, I want to point out that the 0% and 100% stroke voltages at the top are pretty consistent for what they would/should be--if they were reversed.... So, the 0% stroke voltage (after interpolation by the AutoCalibrate algorithm) should end up being somewhere around -0.300 VAC RMS, and the...

cheedee, Specifically, what about 96TV-2's output gave you cause for suspicion? WHEN did you spot this unusual output? The LVDT #1 values at the top of the AutoCalibrate display photo you posted are very, very odd. Those values are ones that AutoCalibrate calculates after an AutoCalibration...

Hello, Jagriti, 1) What have you done to troubleshoot the problem--and, most importantly, what were the results? 2) Have you RTFM? (Read The ... Fine Manual) What does it say about this alarm message? 3) What are ALL of the other Alarm messages on the DAVR with the communication alarm...

TNH (or TNH1) TNH_OS FPRG FPG2 FPG1 FPG3 FAGR FAG FSGR FSG L20VG1 L20VG1X Those are typical Mark* v CDB signal names. Your mileage may vary. ;-) But, sometimes, it's a loose connection or a bad crimp, or a something OTHER than the Mark* V or the device, or the LVDT(s), or 20VG-1. Also, there...

Tamizh, There is no question here. We don't know where the Water Wash system was manufactured, or if it has a PLC controlling the system devices. For MANY years, Water Wash systems provided by the OEM used PLCs (usually A-B (Allen-Bradley, or Rockwell) PLCs) which had a couple of really bad...

cheedee, Click in the field for 'Current Bias' (it's 3.0 in the picture), enter 2.667 and press ENTER, then click on 'VERIFY SCREEN' and all the field value backgrounds should return to white again; if one is purple then that one is not being accepted by the I/O Configurator. Then click on EXIT...

6Bturbinetech, What Diagnostic Alarms are present (and possibly dithering (toggling quickly)) while this problem is occurring? (Please list ALL Diagnostic Alarms, even if you believe they are irrelevant.) What Process Alarms are present (and possibly dithering (toggling quickly)) while this...

cheedee, So, moving on, let's sum up what's been done here to try to get to a good starting point. You have checked, and changed if necessary, the 0% and 100% stroke voltages AND the Null Bias Current value in the I/O Configurator and downloaded them to the three control processors and...

cheedee, That's just a HORRIBLE screen shot--not the quality of the photo (it's okay), but the data on the AutoCalibrate display!!! 2) Did you have the IGV servo powered by each individual processor when checking the servo current polarities? 4) You don't measure Null Bias Current; it's...