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Sz, Are you having trouble(s) with an LVDT? Can you describe the trouble(s) you are having with an LVDT? Most manufacturers employing LVDTs apply them in a manner consistent with the way they are designed to be applied. Most LVDTs require a higher frequency AC source (higher than that...

1. To generate "electricity" with an alternator, all that is required is motion between two conductors and a magnetic field on one of the conductors. IN GENERAL, the direction of rotation doesn't matter, <b>BUT</b> most alternators have internal cooling that <b>IS</b> based on one direction of...

This topic has been covered numerous times on control.com. Use the 'Search' feature in the far right corner of the menu bar at the top of every control.com page. Use the search term: '+compressor +bleed +valve' (without the quotes). For my part though, I don't understand how stroking the...

One of my main points was that the output of the shaft-driven Main L.O. Pump should be high enough when the shaft speed is above 1000 RPM to keep the bearing header pressure above the low-low trip setpoint. I've done tens of trip-from-CRANK speed with the Aux. L.O. Pump disabled to ensure the...

Thanks for the information you provided in the post; it helps! We still need some more information for clarity, though. Please answer all the questions below when you respond. Have you discussed this with GE? What have they said? The reason for low L.O. Pressure is not exactly clear. You...

> 1) Please advise additional probable causes. < That's a pretty comprehensive list. The only thing I didn't see was mention of inspecting the exhaust T/Cs and their radiation shields to ensure the T/C tips are properly located in the shields and there is nothing blocking air flow through...

GE instructions are known not to be the most complete or accurate instructions. If I understand the posting, the answer would likely depend on the configuration of the piping on this particular generator. I would think that head pressures would have to be considered. But, I'm not sure I...

What is the servo connected to? What problems are you having?

<pre> ----------- (1) | | ----- | | | | | | 10 ohm Copper RTD | | | | ----- |\ | \ | \ | ------- (2) | | ----------- (3) </pre> The above drawing is of a typical three-wire RTD. Two leads (#2...

1. To create the new CSP.PRN, you need to run the CSP Documentor. It will automatically add the changes to the CSP.PRN as it creates a new one. If you want to save the old one, you need to give it a unique name, because it will be overwritten by the CSP Documentor (in other words, the output of...

PV, So, you want to run without emergency overspeed signals for two seconds? I don't think the logic discriminates on which signal is out of spec, just that the primary- and emergency speed signals disagree. The primary signal, if it goes low, will cause fuel to be increased to try to...

Have you looked up Wobbie Index using your preferred Internet search engine? Have you looked in the Control Specification for the Speedtronic panel, section 05.02? If so, do you still have questions?

I'm going on record as saying I'm not comfortable with this because you don't seem comfortable working from the command line, but we're this far down the path so we might as go all the way. (I know I'm going to live to regret this. But, I won't be giving any information like this out in the...

I agree with everything MIKEVI said, but I want to make a very important clarification. Units originally built and installed with Mark IVs, or Mark Vs, or Mark VIs most likely have six independent speed pick-ups, one for each of the control- and protective processors. And, many of these units...

This must be an unusual pump, because I'm more accustomed to seeing pump discharge pressures in the range of 40-70 psig, usually around 60 psig or so. The motor might be perfect, but it sounds like there might be something wrong with the pump. It does sound like the differential across the...

I guess I would question why the need for redundant sensors on a SIMPLEX panel. There are many TMR Mark IV-equipped units with single P2 and/or CPD transducers. I think most of them were shipped during the early years of Mark IV production. Never seemed to make much sense on a TMR control...

When did this problem start? Are you sure about the version of CIMPLICITY you listed (8b)? What happens when you open one of the TCI applications, such as Logic Forcing (just to look at one or two signals, not for force anything), or one of the Demand (User Defined) Displays? Do you see...

omega.com offers about the most complete and concise information about temperature sensors (RTDs and Thermocouples) of any site on the World Wide Web. They explain and detail just about any aspect of installing and troubleshooting temperature sensors (and other sensors as well, but not as...

I'm pretty sure the Main (Access. Gear-driven) L.O. Pump is a gear-type positive displacement pump, and the pressure is usually set using a relief valve (yes; a relief valve) but I don't remember the device number of the relief valve. The Auxiliary (AC motor-driven) L.O. Pump is usually a...

Thanks for the feedback!