I need help for fieldpoint problems:
1 - Occasional crash FP-1600
It happens when we�re working with the FieldPoint operating,
Labview/Explorer operating and connected with the sensors, with a tractor
test occasionally it crashes.
In the same conditions, but without the tractor in test we have never had
problems.
(but we can�t rule out that hypothesis).
2 - Occasional crashes OPC server
The PC slows down and stops data acquisition when the LabView cycles are
particularly near or more requests of the program or of the FP-Explorer are
carrying out.
The only solutions are: to start again the PC, or sometime to close and
start again the program.
3 - Problems with the temperature feelers (FP-TC-120 with 8 thermocouples K
type)
Above all when the instrumentation was switched on from few time, all the 8
values were wrong.
And we had to switch off and turn on more than once the FP to have the right
values.
All the other units (2 FP-AI-100) were working well.
The problem didn�t seem of the thermocouples because connecting them to an
other instrumentation they worked well.
The unit FP-TC-120 has been replaced from the N.I. and the problem was
solved.
But there was an other problem: during the test of a channel we had wrong
data (the thermocouple was ok), after few days an other channel has had the
same problem.
That instrumentation wasn�t used for a couple of weeks and when it was
turned on again seemed that all was working correctly.
The measurement system is utilized for tractor�s power take off test and
thermocouples measure gear oil temperature, air intake temperature, etc.
etc. and all the problems have happened when the feeler was in the engine
carter (engine oil temperature) and the double fault, strangely, has
happened always on a feeler inside the engine�s carter.
Moving the thermocouples connectors to understand if the problem was
depending from the thermocouples insertion has happened to feel a slight
electric shock while a technician was accelerating the tractor�s engine yet
cold (both the faults happened with instruments and engine switched on in
the test�s preliminary phase).
The module is a FP-TC-120 with 8 thermocouples K type with a compensated
cable of about 8 m.
The instrumentation is in a shed that during the night could reach some
centigrade below zero.
System:
PIII 450Mhz 256M of ram, W2k Professional (ita) SP3, LabView
6.1, FieldPoint Explorer 3.01
FP-1600 Ethernet firmware 3.20 cable connected FTP (UTP
shielded) at the PC with no other device connected with the net
(about 6 m connection length).
2 modules FP-AI-100 and one module FP-TC-120, a 24 V CC stabilized feeder.
I�m asking if someone has already had similar problems and if the problems
could have a common cause (particularly on the 1� and 3� point)
I�d like to know where searching for the solution:
In the instrumentation�s shield,
In the FieldPoint module�s version
In the OPC server or other
Thank you so much,
Carlo Altieri
ISMA SOP Treviglio
c_underscore_altieri@iol.it
