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The <P> (Protective) core requires three speed signals, and for most new unit Mark V applications that was done with three separate speed pick-ups, 77HT-1, -2, & -3 (separate from the "primary" shaft speed pick-ups, 77NH-1, -2 & -3 which are connected to <R>, <S>, and <T>, respectively). You...

What have you done to try to troubleshoot and resolve the alarms? The two alarms that should be of most concern to you are the DC supply undervoltage and the 125 VDC battery ground alarm. They are likely the source of most of the other alarms. The Mark VI System Guide, GEH-6421, lists the...

When power is being produced at a lagging power factor (lagging VAr indication), the excitation provided to the generator field (the rotor) is usually in excess of what's required. That excess current flow results in heating (current flowing in a conductor produces heat) and the ability of the...

For most control system vendors and technicians and engineers, a 'trip' refers to an emergency shutdown in which the energy input to the prime mover (turbine; reciprocating engine; etc.) is very quickly stopped. Some control system vendors and technicians and engineers use 'trip' to refer to...

http://www.control.com/thread/1026224836#1026224887 There are instructions there for resetting "local" Diagnostic Alarms on the LCC/SLCC display. As for what causes the alarms, well, many things can cause the alarms. Using CARD_ID.EXE can cause the alarms. Improperly formed MODBUS or GSM...

If by 'no corrective action' you mean that the control system does not reduce the steam flow or energy input to the prime mover when the generator breaker trips, then, yes; it's very likely the prime mover will trip on overspeed. When connected to a load and producing power the energy input to...

That's why "unapproved" programs and applications are not supposed to be installed on GE HMIs. CIMPLICITY and TCI have enough memory- and resource leaks of their own. Seriously, though, quite often when non-GE approved applications are installed on HMIs there can be problems. This is a good...

More questions we'll likely never get the answers to, but they should be asked. Is the unit operating on Primary Exhaust Temperature Control or Back-up Exhaust Temperature control? If the control system is a Mark IV, Mark V, Mark VI, or Mark VIe, the usual signal names for Primary- and...

ESKAY, Many sites do not have a "master time" signal generator (such as a satellite receiver or an Internet-connected device/PC) which is providing the time signal to the NTP Server through a time synchronization card in the back of the HMI which is serving as the NTP Server, or over the PDH...

The <C> core has a DCC/SDCC and LCC/SLCC combination in Location 1, a TCCA in Loc. 2, possibly a TCCB in Loc. 3, and a TCDA in Loc. 1 of <CD> The <Q> cores have a DCC/SDCC and LCC/SLCC combination in Loc. 1, a TCQA in Loc. 2, possibly a TCQB (or maybe a TCQF) in Loc. 3, TCEAs in Loc's. 1, -3...

While I don't have any experience with PCVue, I didn't have any problem using Google to find several sites offering PCVue, including a European site which seems to be the publisher of the product: http://www.arcinfo.com/

Dear ESKAY, You replied to a post that was one year old, and to which the originator never responded to any of the questions asked and never indicated the problem had been resolved or not. And, you also have an "open" post (http://www.control.com/thread/1278233723) in which you have not...

All good questions and comments. But the most important question is: <b>When did this problem start?</b> When was the last major inspection? When was the last hot gas path inspection? When was the last combustion inspection? When was the last time the compressor discharge pressure...

ESKAY, I'm a little confused about your statement that the shaft must move 180 degrees. In my experience, the shaft rotates approximately 1/8 turn (approximately 45 degrees) for each forward stroke/retraction stroke sequence, whether by JOG push button or in automatic operation. 180...

It's not always the same PROMsets that require change when upgrading to a GE Mark V HMI from an <I>. Generally, the DCC (or SDCC) and LCC (or SLCC) PROMs require upgrading, and depending on the configuration of the Mark V sometimes other PROMs also have to be changed for compatibility reasons.

I will also ask if, when the CIMPLICITY display "goes black" and shows octotrophs in the value fields, can you connect to the Mark VI using Toolbox? If so, what Diagnostic Alarms are being annunciated? Are there any error/status LEDs lit on the Mark VI controllers when you re-boot? Is this...

Was this working before? Attachments cannot be attached to posts. If it was working before, then something is amiss with the configuration changes being made. If it wasn't working before, something is still amiss with the configuration. Certainly this can be quantified; it's all...

The FIRST question to be answered is: <b>When did this problem begin?</b> Has someone been trying to change the time on the HMI? Or has someone been building, downloading? Making changes to the configuration and/or the HMI? Is the master time signal working properly? This being a Mark VI, the...

I don't have that manual nor access to that manual. But I'm very sure that if you read the fine manual you will discover that there is likely some kind of 4-20 mA input from a "remote" location/source which can be enabled/disabled and used as the speed reference in place of the speed...

Yes.