[TRNSYS-users] Type 84 "Moving average" range check error

[Jochen Doell <jochen.doell@ise.fraunhofer.de>]

Dear TRNSYS users,

I spent quite a few hours on a problem and I want to share the solution 
in order to prevent other users to also get crazy.

When you use type 84 - Moving average with parameter 3 (number of 
timesteps) > 100 you will receive a "Range check error" and no further 
comments. It took me a while to identify that component because I only 
changed my simulation time step and the input parameter for type 84 was 
timestep-dependent...

If you need bigger periods of time to create the moving average you can 
change the value "NTmax" in line 72 of the sourcecode and recompile the 
trndll.dll. But have in mind that this slows down your simulation quite 
heavily. This again can be avoided be cutting down NImax and NOmax to 
the exact number of inputs your simulation requires (both in line 72).

A hint on this limitation in the manual or an error message would have 
been a great help.

Best regards,
Jochen

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Dipl.-Ing. (FH) Jochen Döll
Dept. Thermal Systems and Buildings

Fraunhofer-Institut für Solare Energiesysteme ISE
Heidenhofstrasse 2, 79110 Freiburg, Germany

Phone:	+49 (761) 4588-5468
Fax:	+49 (761) 4588-9000
Mail:	jochen.doell@ise.fraunhofer.de
Web:	www.ise.fraunhofer.de
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