User manual - METER PDU-4x0-W
Symbol used in the manual:
[ENTER]
Functions
:
•
Start to edit the parameter
•
Enter to the sub-menu,
•
Confirmation of changes made in parameter being edited
Symbol used in the manual:
[^] [v]
Functions
:
• Change of the present menu,
• Modification of the parameter value,
• Change of the display mode.
6.
PRINCIPLE OF OPERATION
After turning the power supply on, device ID and software version are showed on the
display, next the controller goes to the measurement mode.
6.1.
MEASUREMENT MODE
In the measure mode, the measurement results, converted over selected characteristic,
are displayed on the LED display. The measurement range equal to the nominal range is
called:
nominal measurement range,
and the measurement range equal to the extended
nominal range is called:
permissible measurement range
(Figure 6.1, 6.2).
Figure 6.1. Definitions of measurement ranges in mode 4 ÷ 20mA
If the result of measurement exceeds the
permissible measurement range
, warning
”-Hi-”
or
”-Lo-”
is displayed rather than input signal,
depends on exceeded value (see description of
“Lo r”
i
“Hi r”
parameters, paragraph
”inPt” menu
).
Figure 6.2. Definitions of measurement ranges in mode 0 ÷ 20mA
17
ENTER
”
Lo r
” parameter
”
Hi r
” parameter
4 mA
20 mA
permissible measurement range
nominal measurement range
”
Hi r
” parameter
0 mA
20 mA
permissible measurement range
nominal measurement range
