6
GB
3. PRELIMINARY HARDWARE
SETTINGS
These instruments can detect the opening of the
input circuit (TC or RTD). This failure is displayed
as an overrange condition.
For the thermocouples only one can select, by
means of jumpers SH1 and CH1 indicated in Fig.
9, the type of indication to be obtained when the
thermocouple is open (see table at the bottom of
the page).
To gain access to the jumpers the instrument must
be taken out of its case.
SH1 CH1
Fig. 10 SH1 and CH1 JUMPERS
SH1 CH1 Indication
open close overrange (standard)
close open underrange
4. CONFIGURATION
4.1 PUSHBUTTON FUNCTION
FUNC This saves the new value of the
selected parameter and goes to the
next parameter (increasing order).
SMT This scrolls back the parameters
without saving the new value.
s This increases the value of the selected
parameter.
t This decreases the value of the
selected parameter.
4.2 POSSIBLE PROTECTION OF THE
PARAMETERS
Access to the configuration and the display and
modification of the operative parameters, can be
protected by a secret code. The code is entered in
configuration, by means of parameters P11 and
P14.
P11 = 0 All the operative parameters can be
displayed and modified. Access to the
configuration is free.
P11 = 1 and P14 = On All the operative
parameters can be displayed but not modified,
apart from SP (Set Point), SP2 (second set point)
and t (time of the timer function). Access to the
configuration is only possible by entering the
master key code when requested.
P11 = 1 and P14 = OFF No operative parameter
can be displayed and modified, apart from SP,
SP2 and t. Access to the configuration is only
possible by entering master key when requested.
P11 = 2/499 In this case the value programmed in
P11 represents a numerical key which can be
used to protect access to the configuration and, in
operative mode, the modification of the
lxe-1-B00.p65 10/18/02, 3:46 PM6
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