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DDMC Analog Input Process Meter / Controller
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 for the user's
specific application. Typically, the main display is
used for the process variable; while the second
display is used for engineering units, custom legend,
or set point indication.
The analog input can be scaled to display the process
in two different scales; for example: with d-SCAL
enabled, the main display could indicate level in feet
and the second display could indicate the volume in
gallons.
Additionally, 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.
Front Panel Buttons Operation
Button
Description
Symbol
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 41 for details.
The table above shows the factory default settings for
F1, F2, and F3.
F4 Operation
A digital input, F4, is standard on the meter. This
digital input is programmed identically to function keys
F1, F2, and F3. The input is triggered with a contact
closure to COM, or with an active low signal. During
operation, F4 operates according to the way it has
been programmed in the Advanced Features – User
menu. See Programmable Function Keys User Menu
(user) on page 41 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.
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Instruction Manual
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Troubleshooting
