PRECISION DIGITAL Helios PD2-6200, Instruction Manual

Page: 49 / 53

Helios PD2-6200 Analog Input Flow Rate/Totalizer
Instruction Manual
49
Meter Operation
The meter is capable of accepting current (0-20 mA,
4-20 mA) and voltage signals (0-5 V, 1-5 V, 0-10 V,

10 V) and displaying these signals in engineering
units from -99999 to 999999 ( e.g. a 4-20 mA signal
could be displayed as -50.000 to 50.000).
The dual-line display can be customized by the user
to operate in such a way as to satisfy a specific
application. Typically, the main display is used for the
process variable; while the second display is used for
engineering units, custom legend, total, grand total, or
set point indication.
The meter can be set up to display the analog input
on the main display and the Modbus input on the
second display. The relays and analog output can be
programmed to operate from the Modbus PV input.
Button Operation
Button
Symbol Description
Press to enter or exit Programming
Mode, view settings, or exit max/min
readings
Press to reset max/min readings or
other parameter/function assigned
through the
User menu
Press to display max/min readings or
other parameter/function assigned
through the
User menu
Press to acknowledge relays or other
parameters/function assigned through
the
User menu
Function Keys Operation
During operation, the programmable function keys
operate according to the way they have been
programmed in the
Advanced Features
– User
menu.
See Programmable Function Keys User Menu (
user
)
on page 47 for details.
The table above shows the factory default settings for
F1, F2, and F3.
Digital Inputs Operation
Five (5) digital inputs, F4, DI-1 to DI-4, come standard
on the meter. These digital inputs are programmed
identically to function keys F1, F2, and F3. The inputs
are triggered with a contact closure to +5 in the case
of digital inputs 1-4 or with an active high signal, see
Digital I/O Connections on page 21 for details. The F4
is triggered with a contact closure to COM or with an
active low signal. During operation, digital inputs
operate according to the way they are programmed in
the Advanced Features
– User menu. See
Programmable Function Keys User Menu (
user
) on
page 47 for details.
Maximum/Minimum Readings
The max & min readings (peak & valley) reached by
the process can be displayed either continuously or
momentary:
1. Display briefly by assigning to the F1-F3 function
keys or to the digital inputs in the User menu.
2. Display continuously by assigning either display
to max/min through the Display menu.
Any of the F1-F3 function keys (buttons) and the
digital inputs can be programmed to reset the max &
min readings. The meters are set at the factory to
display the max reading by pressing the Up arrow/F2
button and to use the Right arrow/F1 button to access
the
Reset menu.
To display max reading using function key with
factory defaults:
1. Press Up arrow/F2 button to display maximum
reading since the last reset/power-up.
2. To reset max/min press Right arrow/F1 button to
access the Reset menu. The max & min displays
are reset to actual values.
3. Press Menu to exit max/min display reading.
To display max/min readings continuously:
Assign either display to Max (
d Hi
), Min (
d Lo
), or
toggle between Max and Min (
d HL
) every 10
seconds.
Totalizer Overflow Displays
Total to 9 Digits
These flow rate/totalizers can display up to nine digits
of total flow with the total overflow feature.
In the diagrams above, the flow totalizer is displaying
532,831,470 by toggling between a display of
“
oF 532
” and “
831470
”. Notice the T with arrow ▲
symbol is lit up indicating the display is in overflow
mode.
MENU
MENU
RIGHT
RESET
F1
UP
MAX
F2
ACK
ENTER
F3