User`s manual

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3) The limits of the proportional band settable by

the SMART function are programmed by

parameters P16, P17 and P18 .

4) The lower limit of the integral time settable by

the SMART function is programmed by

parameter P20 .

5) When ON/OFF control is programmed (Pb=0),

the SMART function is disabled.

6) SMART enabling/disabling can be protected by

the safety lock (see parameter P15).

5.45.4

5.4

MANUAL RESET OF THE ALARMMANUAL RESET OF THE ALARM

MANUAL RESET OF THE ALARM

If the alarm has been configured as a latched

alarm, the alarm status persists even after the

alarm condition disappears.

To reset the alarm, press the FUNC pushbutton to

select the parameter “

n.rSn.rS

n.rS” (the display will show

“

n.rSn.rS

n.rS” and “

OFFOFF

OFF”. Use the  and  pushbuttons

to select “

ONON

ON” and press the FUNC pushbutton.

The alarm reset action will only be successful if the

alarm condition has disappeared.

5.55.5

5.5

SMART ALGORITHMSMART ALGORITHM

SMART ALGORITHM

This function gives best process control.

To enable the SMART function, press the SMT

pushbutton for more than 1.5 s, when the

instrument is in normal display mode. The SMT

LED will be lit continuously or flash according to

the algorithm automatically selected.

When the SMART function is enabled, the

traditional control parameters (

PBPB

, ,

TITI

, ,

TDTD

TD and

rCrC

rC) can be displayed but not modified.

When the traditional control (PID) is desired, press

the SMT pushbutton again (for more than 1.5 s) to

turn the "SMART" OFF. The instrument maintains

the actual control parameters setting and allows

parameter modification.

NOTESNOTES

NOTES:

1) During operation of the SMART function, the

relative cooling gain (if controlled by SMART) is

limited within the following ranges:

Cooling medium Span

Air 0.85 to 1.00

OIL 0.80 to 0.90

O 0.30 to 0.60

2) The SMART function uses a derivative time equal

to 1/4 of the integral time.

5.65.6

5.6

INHIBITION OF THE OUT SIGNALINHIBITION OF THE OUT SIGNAL

INHIBITION OF THE OUT SIGNAL

This feature manually turn OFF the control output.

To turn the out signal OFF, press the 

pushbutton first and then press the FUNC

pushbutton.

Keeping them both pressed for more than 3

seconds.

The instrument will display “

OFFOFF

OFF” instead of

indicating the set point; the out signal will switch

OFF and the instrument will work as a simple

indicator.

When the control outs are disabled, the alarms are

also disabled and forced to the no-alarm condition.

The modification of the control parameters is still

enabled.

To return to normal control, press the  pushbutton

first and then press the FUNC pushbutton.

Keeping them both pressed for more than

3 seconds, the instrument returns to normal display

mode.

NOTES NOTES

NOTES :

1) If the out is turned OFF when the SMART

function is performing the first part of the SMT

algorithm (LED SMT flashing), the SMART

function will be aborted and when the

instrument comes back to the normal control,

the SMART function will be disabled.

1601-03-1-CX.pmd 13/01/2004, 10.4316