[TRNSYS-users] Type93 - Input Recall Value

[Yoshinaga Mika]

Dear Benoît,

 

I suppose the 2nd parameter value of Type93 might be incorrect.

If you want to keep the previous value in timesteps, the value should be set to 2 or larger. See below (in manual, Mathematical Reference).

 

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4.13.15    Type 93: Input value recall 

The  function  of  the  input  value  recall  component  is  quite  simple.  It  is  used  to  remember  the 

values of up to 10 inputs over the course of the last N ts  timesteps.  It is primarily useful for more 

complex control strategies using EQUATIONS in the TRNSYS input file.   

4.13.15.1   Component configuration 

Parameters 

•   The first parameter is the number of input variables that must be stored (N i  ≤ 10) 

•   The  second  parameter  is  the  number  of  time  steps  that  must  be  stored.  The  current  time 

step is counted as one (N ts  ≤ 500). 

Outputs 

•   Outputs 1..N ts  are the value of input 1 at time, time-step, … time-(N ts -1)step 

•   Outputs N ts +1..2 N ts  are the value of input 2 at time, time-step, … time-(N ts -1)step 

•   Etc.

=====

 

Best regards,

 

Mika

 

 

From: trnsys-users-bounces at cae.wisc.edu [mailto:trnsys-users-bounces at cae.wisc.edu] On Behalf Of benoit.cogne at aximaseitha-gdfsuez.com
Sent: Tuesday, May 17, 2011 4:42 PM
To: trnsys-users at cae.wisc.edu
Subject: [TRNSYS-users] Type93 - Input Recall Value

 

Dear all,

 

I'm making a simple test in which I add 1 to the output the Input Recall Value Type93, and send this value at the input of the same Type93.

 

The initial value is 0

 

For a reason I don't understand, there are several iterations (32 at each time step) during the first time steps (30) during which the output of the type93 changes at each iteration.

I thought it should be fixed to the last input of the preceeding time step.

After these first time steps, the system responds properly.

 

Here attached is the test.

 

Can some one explain me what is wrong in my approach ?

 

Thanks al lot !

Benoît COGNE 
Développement Efficacité Energétique 
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