PD8-6300 Pulse Input Rate/Totalizer, Counter & Tachometer
Instruction Manual
12
Total Reset Capabilities
The user may reset the total via a SafeTouch button,
the F4 terminal at the back of the meter, an external
contact closure on the digital inputs, automatically via
user selectable preset value and time delay, or
through serial communications.
Total Reset via SafeTouch Button
The three through-glass SafeTouch button function
keys can be programmed to reset the total and grand
total. This makes it possible for the user to reset either
the total or the grand total without opening the enclosure
cover and without the need for external devices. Of
course, if the total or grand total is password protected,
they will not reset when the function key is pressed.
Total Reset via F4 Terminal
The PD8-6300 includes a digital input (referred to as
the F4 terminal) located on the back of the electronics
module as standard that can be used to reset the total
or grand total, among other things. This is the preferred
method for externally resetting the total or grand total
because it does not interfere with the operation of the
SafeTouch buttons for programming as described
below in the Total Reset via Digital Input section.
Total Reset via Digital Input
In addition to the F4 digital input described above, the
PD8-6300 also includes four digital inputs that can be
used to reset the total or grand total. However, if a
digital input is used to reset the total, or for some
other purpose, the corresponding through-glass
SafeTouch button will function as a programming key.
Total Reset via Preset Value
The total and grand total can be programmed for
automatic reset based on a preset value determined
by the user. In the automatic reset mode, a
programmable time delay is available to reset the total
or grand total after the assigned preset is reached.
Total Reset via Serial
Communications
The total and grand total can be reset via serial
communications such as a Modbus command or
MeterView Pro.
Sampling Function
(Total Triggered Timed Relay)
The sampling function allows the operator to set a set
point for a “sampling” relay. When the program total
reaches that set point, it will close that relay’s
contacts for a preset period of time (0.1 to 5999.9
seconds). An example of its use may be for
wastewater sampling. When the wastewater total
reaches a preset total interval (i.e. every 10,000
gallons), the relay contacts would close for a preset
time, and by some means (light, horn, etc.) alert
someone to take a sample, or provide the trigger to
automatically take a sample of the wastewater.
The utility of this function can, of course, be expanded
beyond sampling and be used whenever a timed relay
output closure is required when the rate or a total
interval reaches a certain set point.
Summary of Contents for ProtEX-MAX PD8-6300
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