Search results

GE's new PLC/software division is called GE Intelligent Platforms, and their website URL is: www.ge-ip.com They still offer the RXni controllers, as well as "Proficy" (CIMPLICITY) HMI/SCADA software.

It sounds like the machines are relatively new (MBC (Model-Based Control, I presume) is pretty new to GE's machines). And, many F-class machines are monitored by one or more of GE's Remote Monitoring and Diagnostics Centers. Have you spoken with GE about this? Without being able to see the...

MarkAllen, 20CS-1 and 20CS are the same. Usually, most times even if there was only a single device many engineers would include a -1; sometimes, they wouldn't. I had a feeling you were working with an older machine. Does that machine have a Hydraulic Ratchet Self-sequencer (VH14 or VH14-1)?

Tahri, Oh, if that were only possible. There is no driver written for IDOS or TCI (we don't know if you have an <I>, running IDOS, or a GE Mark V HMI running MS-Windows, TCI, and CIMPLICITY). IDOS and TCI both have proprietary ARCnet drivers, and there is no USB support. For the GE Mark V...

Thank, you, MarkAllen, for clarifying which valve you were referring to. Oh, THAT vicker valve. Actually, I've never seen a Vickers Hydraulics valve used for that application--but I haven't seen every ratchet implementation, either. Would you also call 20CS-1 a "vicker valve"? Are you...

Mazen, Two more questions: How long does the turbine trip after the high compartment temperature alarms are annunciated? And, do the trips always occur at the same time after the high compartment temp alarms?

If you are referring to the servo-operated fuel control valves and IGVs used on GE-design heavy duty gas turbines, calibration of LVDT feedback should <b>ALWAYS</b> be done with respect to actual, measured position of the device. <b>One is <b>not</b> calibrating the valve or the servo</b>; one...

Mazen, While this problem may have been happening for some time (we don't know how long), the difficulty with trying to troubleshoot a problem like this is that it has been allowed to persist for some time and so the details of what happened or changed prior to the start of the problem are...

Thanks for the feedback!

The first DLN-I systems used the combined GCV/SRV assembly, a Gas Splitter Valve, and a Gas Transfer Valve. Then GE developed a "transferless" DLN-I system, meaning they eliminated the Gas Transfer Valve and the Gas Transfer Purge Valves and piping. This did a couple of things, but most...

I've been working on GE-design heavy duty gas turbines for nigh on 30 years, and although I've seen valves manufactured by Vickers used on some GE turbines, I've never heard a valve in the ratchet mechanism called a "vicker valve". And we try pretty hard here on control.com to use the same terms...

Abdou, There's still another possibility, though remote, that should still be looked into. Spark plugs do deteriorate over time, and it's also not uncommon for the ceramic insulators inside them to break. Firing on liquid fuel requires a pretty good spark. If the liquid fuel wets the end...

Abdou, <b>From the information provided</b> it's very difficult to determine exactly what might be the cause of inability to ignite and maintain flame on liquid fuel after the trip event. By the way you didn't say if the trip occurred when running on liquid fuel or on gas fuel...? It would...

Okay; it's tripping on loss of flame. <b>When is it tripping on loss of flame???</b> After warm-up is complete? During acceleration? We also don't know what kind of Speedtronic you have and what kind of data-gathering capabilities you may have. Are you saying you never had problems...

Mos, Exactly what "same" problem are you having? When did this problem start? Or, has it been on-going for a long time? From the sounds of it, you have older units with roof-mounted heat exchangers. Even if not, when was the last time the heat exchangers were cleaned with a pressure...

Defective. Hadn't considered that possibility. The fact remains: There is no working alarm printer that can be used to obtain chronological information--as it the case on so many sites, so I'm not singling this one out just trying to point out the undeniable fact that printed alarm logs are...

Lots of good information, but you didn't tell us what kind of hazardous gas monitors are installed or what fuel is being burned. We also don't know how long your 'State of the Art' turbine has been running without haz gas issues, or if you have experienced similar alarm "spikes" previously...

Liam Heslop, Thanks for the info. I have seen similar unshielded wiring used for RTDs (and T/Cs) in generator applications, and have always wondered what the people who spec'ed that were thinking. I have no experience with the Woodward linknet modules, but I would presume the...

Good information, but you still didn't provide the alarm messages. AARRGGHH!!!! Alarms are important to troubleshooting; they aren't just nuisances to be ignored! (Contrary to popular tribal knowledge and mythical lore.) And, of course the load is going to vary with frequency if the unit is...

It's the feedback that makes the information on control.com most valuable. Don't forget that. I'm not really seeing a question here. Increasing the droop from 4% to 5% means that for every 1% error in speed (difference between reference and actual when not at full load) the unit will...