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RustyCas

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For a given machine, I will use a combination of triax measurements and single-point measurements.  The motor for instance will done single-point with my normal accel on a D cable attached to port 2, channel D (4).  The fan bearings will be done with the triax as group 1 & 2.

I assumed the single points could be left as Group 0 and just set the Channel to 4 so it would read the D port.

But it doesn't seem to let me do that. Well it did at first, but a couple of the points had defaulted to Ch A and when I looked back at the database the Ch was 0.  And now it won't let me change the Ch from 0 if the Group = 0.

Do I have to assign a Group number to each point that I want to read as single-point if I want it to be on Ch D (4)?  Has anyone else run across this?

I know, I know... why don't I just call CSI?   That has proven to be very frustrating.  So I just ask here first.  Sorry.

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HuskerTim

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Reply with quote  #2 
Rusty,

I've not run across this and I don't utilize the triax. But my MHM training manual and the MHM manual you requested in another post both reference that channels 1-20 are reserved for triax measurements and >21 are single points...sorry not much help...
dmcmmc

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Reply with quote  #3 
I know this is an old thread but someone might still need an answer. If the group and channel numbers are zero the 2140 treats the point as a single reading even with a triaxial accelerometer.
fburgos

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Reply with quote  #4 
I believe if you use channel D you must use a special D cable or the splitter/mux
RustyCas

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Reply with quote  #5 
I abandoned my plans to use Channel D. When running a route with a mix of triax and ‘non-triax’ points, the non-triax points are Left at Group 0 and I just use the triax as a normal accel. For those who haven’t seen it, the CSI triax has an integral magnet with a “notch” for a special (proprietary) base, with no threaded hole. But the special base does have a threaded hole, so I attached my standard stinger to the one base I have, and it works fine. I still have to swap cables when I do a route with triax points, but there aren’t many (Centac compressors and large fans/motors).
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