Pushbutton Function; Manual Reset Of The Alarms; Smart Algorithm - ero electronic LDS Manuel De Service

Pushbuttons Pushbuttons Pushbuttons Pushbuttons Pushbuttons function: function: function: function: function:
FN = It allows to memorize the new value of
the selected parameter and go to the
next parameter (increasing order).
ST = It allows to enable or disable the
SMART function and to scroll back all
the parameters without storing them.
= It allows to increase the value of the
selected parameter or (LDS only) to
display the set point value or the
measured value.
= It allows to decrease the value of the
selected parameter.
+ FN = allows to enable/disable the "LAMP
TEST"
NOTE NOTE
NOTE NOTE: a 10 seconds time out become opera- NOTE
tional during parameter modification.
If, during operative parameter modification, no
pushbutton is pressed during this time out, the
instrument reverts automatically to the "normal
display mode". The new setting of the last
parameter modified is going to be memorizzed,
prior to the time out, only if the FN pushbutton
was depressed.

MANUAL RESET OF THE ALARMS

MANUAL RESET OF THE ALARMS MANUAL RESET OF THE ALARMS MANUAL RESET OF THE ALARMS MANUAL RESET OF THE ALARMS
If the alarm has been configured as a latched
alarm, the alarm status persists also after the
alarm condition disappears.
When it is desired to reset the alarm, pushing FN
pushbutton select the "n.rS" parameter (the
display will show "n.rS" and "OFF"). By the
pushbuttons select "ON" and push the FN
pushbutton again.
The alarm reset action will be successful if the
alarm condition has disappeared only.
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SMART ALGORITHM

SMART ALGORITHM SMART ALGORITHM SMART ALGORITHM SMART ALGORITHM
It is used to obtain automatically the best control
action.
To enable the SMART function, push the ST
pushbutton for more than 1,5 s, when the
instrument is in normal display mode. The ST
LED will lit continuously or flashing according to
the algorithm automatically selected.
When the smart function is enabled, it is possible
to display but not to modify the control param-
eters (PB, TI, TD and rC).
When the traditional control (PID) is desired, push
the ST pushbutton again (for more than 1.5 s) to
turn the "SMART" OFF. The instrument maintains
the actual set of control parameters and allows
parameter modification.
NOTES NOTES NOTES: NOTES NOTES
1) During the SMART function operation, the
relative cooling gain (if present and controlled
by SMART) is limited within the following
ranges:
Cooling element range
Air 0.85 to 1.00
OIL 0.80 to 0.90
H O 0.30 to 0.60
2
2) The SMART function use a derivative time equal
to 1/4 of the integral time.
3) The limits of the proportional band settable by
the SMART function is programmed by P16,
P17 and P18 parameters.
4) The lower limit of the integral time settable by
SMART function is programmed by P20
and
parameter.
5) When ON/OFF control is programmed (PB=0),
the SMART function is disabled.
6) The SMART enabling/disabling can be
protected by the safety lock (see P15
parameter).
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16/01/2004, 9.29