Celduc Temperature controller ECOM Manual de usuario descargar pdf (Pagina 48)

User manual - ECOM0010 49

in the system. At this point the autotuning is launched (value

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When the procedure ends, it switches o the control output

and sets the value 4 in word 1004. The master, which keeps

reading the word 1004, checks the various zones and when all

of them have reached the value 4 it will bring to 0 the value

of word 1004.

The various devices will regulate the temperature based on

the new values.

N.B. The master must read the Word 1004 at least every 10

seconds otherwise the controller will automatically exit the

autotuning procedure.

6.4 Automatic / Manual control mode of the

percentage of the output

This function allows to select automatic or manual control of

the output percentage. With parameter 28 (

DXPD

word

2028), you can select two methods.

1. The rst selection (write 1 in word 2028) allows to modify,

through the word 1005, the functioning mode: after

writing 1 it is possible to change the output percentage on

word 1011 (range 0-10000).

To return to automatic mode, write 0 on word 1005.

2. The second selection (write 2 in word 2028) enables the

same mode, but with two important variants:

t *GUIFSFJTBUFNQPSBSZMBDLPGWPMUBHFPSBGUFSTXJUDIPò

the manual functioning will be maintained as well as the

previously set output percentage value.

t *G UIF TFOTPS CSFBLT EVSJOH BVUPNBUJD GVODUJPOJOH UIF

controller swithes to manual mode while maintaining the

output percentage control unchanged as generated by

the PID immediately before the break.

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Celduc Temperature controller ECOM Manual de usuario Pagina 48