ENGR: GE Mark VI shattering command
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automation at control.com
Sun Aug 3 19:21:54 EDT 2008
------------ Forwarded Message ------------
From: TurboYankee
To: AUTOMATION at CONTROL.COM
Subject: Re: ENGR: GE Mark VI shattering command
Fahad,
I've never heard of a "shattering command" and your problem statment is very short on pertinent details, but I'll take a stab at this one anyway.
I'm going to assume you have redundant lube oil cooling fans, and that the Mark VI is turning them on and off so often that the breakers are failing. Our 7FA's don't have air cooled lube oil coolers because we have closed loop cooling water systems, however, we do have redundant fans such as the turbine compartment cooling fans, the bearing tunnel cooling fans, and so on.
All these fans have air pressure switches that provide positive verification that minimum outlet pressures are being maintained. It is typical of GE to install proof-switches (operating status feedback) to verify operation of most any motor driven device, whether it is a pump or fan or whatever. GE generally does not use contactor pick-up to verify run status. However, their control sequence programs (CSPs) don't necessarily handle feedback device failure very well.
In our case, if the lead fan is running, and the discharge air pressure switch opens due to loss of adequate air pressure or bouncing of the switch contacts as the switches age, the standby fan will be started. If its' discharge pressure switch begins to open, we'll have a runback. So our CSP is written to protect the turbine by reducing load if proof of running is lost, even if the fan is actually running. It sounds like your CSP may be written to slam the motors on and off on loss of feedback, which would be a mistake. Again, I'm just guessing.
Solutions to our situation are usually to put in new switches if the contacts are failing, or lower the setpoints if they're a bit too close to the operating pressure. Until we can get to that, we'll usually force the output on to keep the lead fan running and force the feedback input to prevent runback.
In your case, you may need to force the fan(s) on and maybe the feedback input(s) on, or if your not familiar with forcing I/O, to temporarily install a hard wire jumper to keep the fan(s) turned on and the feedback input on while you trouble shoot your proof switches, assuming you have something that performs this function.
Good luck.
On Aug 3, 2008 3:28 pm, Fahad wrote:
We are facing a serious problem in the lube oil cooling fan . The cooling fan breakers keep failing, due to shattering command on/off from Mark VI as it’s shown below:
31-JUL-2008 18:49:34.174 G6 0 0x14 EVT
31-JUL-2008 18:49:34.174 G6 1 0x15 EVT
31-JUL-2008 18:49:34.174 G6 0 0x14 EVT
31-JUL-2008 18:49:34.174 G6 1 0x15 EVT
31-JUL-2008 18:49:34.201 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.201 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.213 G6 1 0x14 EVT
31-JUL-2008 18:49:34.213 G6 0 0x15 EVT
31-JUL-2008 18:49:34.213 G6 1 0x14 EVT
31-JUL-2008 18:49:34.213 G6 0 0x15 EVT
31-JUL-2008 18:49:34.253 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.253 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.253 G6 0 0x14 EVT
31-JUL-2008 18:49:34.253 G6 1 0x15 EVT
31-JUL-2008 18:49:34.253 G6 0 0x14 EVT
31-JUL-2008 18:49:34.253 G6 1 0x15 EVT
31-JUL-2008 18:49:34.279 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.279 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.293 G6 1 0x14 EVT
31-JUL-2008 18:49:34.293 G6 0 0x15 EVT
31-JUL-2008 18:49:34.293 G6 1 0x14 EVT
31-JUL-2008 18:49:34.293 G6 0 0x15 EVT
31-JUL-2008 18:49:34.332 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.332 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.334 G6 0 0x14 EVT
31-JUL-2008 18:49:34.334 G6 1 0x15 EVT
31-JUL-2008 18:49:34.334 G6 0 0x14 EVT
31-JUL-2008 18:49:34.334 G6 1 0x15 EVT
31-JUL-2008 18:49:34.357 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.357 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.373 G6 1 0x14 EVT
31-JUL-2008 18:49:34.373 G6 0 0x15 EVT
31-JUL-2008 18:49:34.373 G6 1 0x14 EVT
31-JUL-2008 18:49:34.373 G6 0 0x15 EVT
31-JUL-2008 18:49:34.413 G6 0 0x14 EVT
31-JUL-2008 18:49:34.413 G6 1 0x15 EVT
31-JUL-2008 18:49:34.413 G6 0 0x14 EVT
31-JUL-2008 18:49:34.413 G6 1 0x15 EVT
31-JUL-2008 18:49:34.427 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.427 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.443 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.443 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.454 G6 1 0x14 EVT
31-JUL-2008 18:49:34.454 G6 0 0x15 EVT
31-JUL-2008 18:49:34.454 G6 1 0x14 EVT
31-JUL-2008 18:49:34.454 G6 0 0x15 EVT
31-JUL-2008 18:49:34.491 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.491 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.493 G6 0 0x14 EVT
31-JUL-2008 18:49:34.493 G6 1 0x15 EVT
31-JUL-2008 18:49:34.493 G6 0 0x14 EVT
31-JUL-2008 18:49:34.493 G6 1 0x15 EVT
31-JUL-2008 18:49:34.522 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.522 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.533 G6 1 0x14 EVT
31-JUL-2008 18:49:34.533 G6 0 0x15 EVT
31-JUL-2008 18:49:34.533 G6 1 0x14 EVT
31-JUL-2008 18:49:34.533 G6 0 0x15 EVT
31-JUL-2008 18:49:34.574 G6 0 0x14 EVT
31-JUL-2008 18:49:34.574 G6 1 0x15 EVT
31-JUL-2008 18:49:34.574 G6 0 0x14 EVT
31-JUL-2008 18:49:34.574 G6 1 0x15 EVT
31-JUL-2008 18:49:34.575 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.575 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.601 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.601 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.613 G6 1 0x14 EVT
31-JUL-2008 18:49:34.613 G6 0 0x15 EVT
31-JUL-2008 18:49:34.613 G6 1 0x14 EVT
31-JUL-2008 18:49:34.613 G6 0 0x15 EVT
31-JUL-2008 18:49:34.653 G6 0 0x14 EVT
31-JUL-2008 18:49:34.653 G6 1 0x15 EVT
31-JUL-2008 18:49:34.653 G6 0 0x14 EVT
31-JUL-2008 18:49:34.653 G6 1 0x15 EVT
31-JUL-2008 18:49:34.661 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.661 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.679 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.679 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.693 G6 1 0x14 EVT
31-JUL-2008 18:49:34.693 G6 0 0x15 EVT
31-JUL-2008 18:49:34.693 G6 1 0x14 EVT
31-JUL-2008 18:49:34.693 G6 0 0x15 EVT
31-JUL-2008 18:49:34.733 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.733 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.733 G6 0 0x14 EVT
31-JUL-2008 18:49:34.733 G6 1 0x15 EVT
31-JUL-2008 18:49:34.733 G6 0 0x14 EVT
31-JUL-2008 18:49:34.733 G6 1 0x15 EVT
31-JUL-2008 18:49:34.757 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.757 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.774 G6 1 0x14 EVT
31-JUL-2008 18:49:34.774 G6 0 0x15 EVT
31-JUL-2008 18:49:34.774 G6 1 0x14 EVT
31-JUL-2008 18:49:34.774 G6 0 0x15 EVT
31-JUL-2008 18:49:34.814 G6 0 0x14 EVT
31-JUL-2008 18:49:34.814 G6 1 0x15 EVT
31-JUL-2008 18:49:34.814 G6 0 0x14 EVT
31-JUL-2008 18:49:34.814 G6 1 0x15 EVT
31-JUL-2008 18:49:34.823 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.823 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.843 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.843 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.854 G6 1 0x14 EVT
31-JUL-2008 18:49:34.854 G6 0 0x15 EVT
31-JUL-2008 18:49:34.854 G6 1 0x14 EVT
31-JUL-2008 18:49:34.854 G6 0 0x15 EVT
31-JUL-2008 18:49:34.892 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.892 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.894 G6 0 0x14 EVT
31-JUL-2008 18:49:34.894 G6 1 0x15 EVT
31-JUL-2008 18:49:34.894 G6 0 0x14 EVT
31-JUL-2008 18:49:34.894 G6 1 0x15 EVT
31-JUL-2008 18:49:34.924 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.924 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:34.934 G6 1 0x14 EVT
31-JUL-2008 18:49:34.934 G6 0 0x15 EVT
31-JUL-2008 18:49:34.934 G6 1 0x14 EVT
31-JUL-2008 18:49:34.934 G6 0 0x15 EVT
31-JUL-2008 18:49:34.974 G6 0 0x14 EVT
31-JUL-2008 18:49:34.974 G6 1 0x15 EVT
31-JUL-2008 18:49:34.974 G6 0 0x14 EVT
31-JUL-2008 18:49:34.974 G6 1 0x15 EVT
31-JUL-2008 18:49:35.014 G6 1 0x14 EVT
31-JUL-2008 18:49:35.014 G6 0 0x15 EVT
31-JUL-2008 18:49:35.014 G6 1 0x14 EVT
31-JUL-2008 18:49:35.014 G6 0 0x15 EVT
31-JUL-2008 18:49:35.053 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.053 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.054 G6 0 0x14 EVT
31-JUL-2008 18:49:35.054 G6 1 0x15 EVT
31-JUL-2008 18:49:35.054 G6 0 0x14 EVT
31-JUL-2008 18:49:35.054 G6 1 0x15 EVT
31-JUL-2008 18:49:35.080 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.080 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.093 G6 1 0x14 EVT
31-JUL-2008 18:49:35.093 G6 0 0x15 EVT
31-JUL-2008 18:49:35.093 G6 1 0x14 EVT
31-JUL-2008 18:49:35.093 G6 0 0x15 EVT
31-JUL-2008 18:49:35.132 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.132 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.133 G6 0 0x14 EVT
31-JUL-2008 18:49:35.133 G6 1 0x15 EVT
31-JUL-2008 18:49:35.133 G6 0 0x14 EVT
31-JUL-2008 18:49:35.133 G6 1 0x15 EVT
31-JUL-2008 18:49:35.158 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.158 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.174 G6 1 0x14 EVT
31-JUL-2008 18:49:35.174 G6 0 0x15 EVT
31-JUL-2008 18:49:35.174 G6 1 0x14 EVT
31-JUL-2008 18:49:35.174 G6 0 0x15 EVT
31-JUL-2008 18:49:35.213 G6 0 0x14 EVT
31-JUL-2008 18:49:35.213 G6 1 0x15 EVT
31-JUL-2008 18:49:35.213 G6 0 0x14 EVT
31-JUL-2008 18:49:35.213 G6 1 0x15 EVT
31-JUL-2008 18:49:35.215 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.215 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.242 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.242 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.254 G6 1 0x14 EVT
31-JUL-2008 18:49:35.254 G6 0 0x15 EVT
31-JUL-2008 18:49:35.254 G6 1 0x14 EVT
31-JUL-2008 18:49:35.254 G6 0 0x15 EVT
31-JUL-2008 18:49:35.294 G6 0 0x14 EVT
31-JUL-2008 18:49:35.294 G6 1 0x15 EVT
31-JUL-2008 18:49:35.294 G6 0 0x14 EVT
31-JUL-2008 18:49:35.294 G6 1 0x15 EVT
31-JUL-2008 18:49:35.295 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.295 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.324 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.324 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.333 G6 1 0x14 EVT
31-JUL-2008 18:49:35.333 G6 0 0x15 EVT
31-JUL-2008 18:49:35.333 G6 1 0x14 EVT
31-JUL-2008 18:49:35.333 G6 0 0x15 EVT
31-JUL-2008 18:49:35.374 G6 0 0x14 EVT
31-JUL-2008 18:49:35.374 G6 1 0x15 EVT
31-JUL-2008 18:49:35.374 G6 0 0x14 EVT
31-JUL-2008 18:49:35.374 G6 1 0x15 EVT
31-JUL-2008 18:49:35.376 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.376 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.398 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.398 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.414 G6 1 0x14 EVT
31-JUL-2008 18:49:35.414 G6 0 0x15 EVT
31-JUL-2008 18:49:35.414 G6 1 0x14 EVT
31-JUL-2008 18:49:35.414 G6 0 0x15 EVT
31-JUL-2008 18:49:35.453 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.453 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.454 G6 0 0x14 EVT
31-JUL-2008 18:49:35.454 G6 1 0x15 EVT
31-JUL-2008 18:49:35.454 G6 0 0x14 EVT
31-JUL-2008 18:49:35.454 G6 1 0x15 EVT
31-JUL-2008 18:49:35.482 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.482 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.494 G6 1 0x14 EVT
31-JUL-2008 18:49:35.494 G6 0 0x15 EVT
31-JUL-2008 18:49:35.494 G6 1 0x14 EVT
31-JUL-2008 18:49:35.494 G6 0 0x15 EVT
31-JUL-2008 18:49:35.532 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.532 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.533 G6 0 0x14 EVT
31-JUL-2008 18:49:35.533 G6 1 0x15 EVT
31-JUL-2008 18:49:35.533 G6 0 0x14 EVT
31-JUL-2008 18:49:35.533 G6 1 0x15 EVT
31-JUL-2008 18:49:35.559 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.559 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.573 G6 1 0x14 EVT
31-JUL-2008 18:49:35.573 G6 0 0x15 EVT
31-JUL-2008 18:49:35.573 G6 1 0x14 EVT
31-JUL-2008 18:49:35.573 G6 0 0x15 EVT
31-JUL-2008 18:49:35.613 G6 0 0x14 EVT
31-JUL-2008 18:49:35.613 G6 1 0x15 EVT
31-JUL-2008 18:49:35.613 G6 0 0x14 EVT
31-JUL-2008 18:49:35.613 G6 1 0x15 EVT
31-JUL-2008 18:49:35.619 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.619 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.638 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.638 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.653 G6 1 0x14 EVT
31-JUL-2008 18:49:35.653 G6 0 0x15 EVT
31-JUL-2008 18:49:35.653 G6 1 0x14 EVT
31-JUL-2008 18:49:35.653 G6 0 0x15 EVT
31-JUL-2008 18:49:35.693 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.693 G6 1 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.693 G6 0 0x14 EVT
31-JUL-2008 18:49:35.693 G6 1 0x15 EVT
31-JUL-2008 18:49:35.693 G6 0 0x14 EVT
31-JUL-2008 18:49:35.693 G6 1 0x15 EVT
31-JUL-2008 18:49:35.724 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
31-JUL-2008 18:49:35.724 G6 0 L52QC4 SOE Lube Oil Cooler Fan #4 Running
( Complete thread: http://www.control.com/thread/1026248835 )
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