Posts Tagged troubleshooting

Video: Troubleshooting a Maxon Shutoff Valve

We understand the inconvenience that comes with having to send an instrument out for repair, so at Lesman we try to help you determine what’s wrong with your device before you remove it from service. After all, we don’t want you to lose any uptime if it’s something that can be fixed in the field.

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Changing the COM port for a USB HART modem in Pactware

Written by: Dan Weise

I couldn’t communicate with a HART device. The configuration software I was using, Pactware, thought the USB HART modem was on COM 3, while Windows’ Device Manager showed it was actually on COM 6.

COM Port Post

COM Port Post 2

To change the COM port in Pactware to COM 6, I right clicked COM 3 and selected Parameter:

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Why won’t Pactware work with the Siemens LUT 400?

Written by: Dan Weise

I’ve used Pactware for a couple years now, so I was surprised when I couldn’t get the Siemens LUT400 to work with the software. The LUT400 ultrasonic level and flow controller comes with a DTM file that I installed before opening the Pactware software.

The DTM file can be downloaded from this link: http://tinyurl.com/cqk2cky

Once it had been installed, I opened Pactware and updated the device catalog, as seen in the picture below:

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But when I attempted to establish a HART connection to the LUT400, I got an error message:

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Troubleshooting Maxon Shutoff Valves by Sound

Written by: A.J. Piskor

One of the key pieces of any combustion system are the safety shutoff valves. Their job is important, stop the fuel from entering the system when requested or when a fault is detected. With the harsh operating environments and demanding cycling that these valves sometimes go through, internal components have been known to fail. Not only does this bring the shutoff valve down (to a safe position), but it also brings down the combustion system with it.

Maxon shutoff valves are known for their performance, reliability, and durability. In the rare case that one of their automatic reset gas valves (Series 5000/SMA11 or 5000CP/CMA11 for normally closed models, series STOA/SMA21 or STOACP/CMA21 for normally open models) fails to perform, it’s possible that one of the internal components could have gone bad. Each Maxon automatic reset shutoff valve comes with three critical electrical components (solenoid, motor, position switch) that need to work together for the valve to operate properly. By listening to the valve cycle to its energized state, you can detect if any of these critical electrical components needs to be replaced.

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Why doesn’t the print button work in my Trendview recorder browser window?

When their Remote View option is turned on, Trendview paperless recorders display recorder screens in Internet Explorer as shown here:

Trendview Post

Getting a printout was not as easy as using file > print, because the technology uses Active-X components in Windows, so the result is a blank screen; something to do with Active X and printing.

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Solving installation problems for radar tank level transmitters

radar ellipse intersecting the tank wallRecently, we’ve run into a few radar level applications that had some startup challenges, mostly because the person installing the transmitter didn’t consider how radar wave transmission would affect the level transmitter’s performance.

One trick to any installation is to reduce the number of obstructions encountered by the transmitter. But you have to take into consideration that radar waves don’t transmit in a concentric circle around the transmitter. And this can create a problem of its own.

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What’s the Backdoor Password for Honeywell X-Series Paperless Recorders?

Honeywell Minitrend QX X-Series Paperless RecorderOne of the strengths of Honeywell’s X-series paperless recorders is password security. You can configure it to keep operators from making configuration changes, and it’s a necessary part of being able to view a recorder’s data using a web browser.

One of the weaknesses of Honeywell’s X-series paperless recorders is password security. And by that, I don’t mean it’s bad. I just mean it can cause problems if a user fails to enter their username and password right, and ends up locked out of the recorder.

So I’m guessing if you searched for the backdoor password, you’re in that situation. You’re locked out of your recorder and can’t figure out how to get back in.

First, I apologize for luring you into reading this. There is NO backdoor password for an X-series recorder.  But don’t give up hope: There is an answer.

(What’s a back door? Watch and learn.)

Hopefully, there’s a user at your location with administrator level access, who can reset a locked-out user. But if that’s not the case, what do you do when everyone is locked out of an X-series recorder?

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