SMAR LD290, Operation And Maintance Manual

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LD290- Operation and Maintenance Instruction Manual
2.4
The Display
The integral indicator is able to display one or two variables, which are user selectable. When
two variables are chosen, the display will alternate between the two with an interval of 3
seconds.
The liquid crystal display includes a field with 4 ½ numeric digits, a field with 5 alphanumeric
digits and an information field, as shown on Figure 2.4.
DISPLAY V6.00
The display controller, from release V6.00 on, is integral to the main board. Please observe the new
spare parts codes.
Monitoring
During normal operation, the LD290 is in the monitoring mode. In this mode, indication
alternates between the primary and secondary variable as configured by the user. See Figure.
2.5. The display indicates engineering units, values and parameters simultaneously with most
status indicators.
The monitoring mode is interrupted when the user does complete local adjustment.
The display is also capable of displaying an error and other messages (See table 2.1).
INDICATES ACTIVE
CONSTANT OUTPUT MODE
INDICATES ACTIVE
TABLE FUNCTION
VARIABLE FIELD
%
F(x)
PV
Fix
UNIT PERCENT
UNIT AND FUNCTION FILED
INDICATES THAT THE PROCESS
VARIABLE IS NOW DISPLAYED
INDICATES POSSIBILITY
TO ADJUST / CHANGE
VARIABLES / OPTIONS
Figure 2.4 - Display
Figure 2.5
– Typical Monitoring Mode Display Showing PV, in this case 25.00 mmH
2
0
DISPLAY DESCRIPTION
INIT The LD290 is in initializing after power on.
FAIL
SENS
Sensor failure. Refer to Section 4 - Maintenance.
SAT Current output saturated in 3.8 or 20.5 mA. Refer to Section 4 - Maintenance.
Table 2.1 - Display Messages