Precision Digital Corporation Loop Leader+ PD4-6624, Инструкция по эксплуатации

Страница: 68 / 78

PD4-6624 & PD4-6628 Loop-Powered Flow Rate/Totalizers Instruction Manual
68
Total Reset Capabilities
The total and grand total can be reset using a button
behind the lower panel door (F2 default), the remote
contacts connected to a control station, an external
contact closure on the digital input, or MeterView XL.
In addition, both total and grand total reset can be
password protected to prevent unauthorized resets.
Total Reset via Button Under Lower
Panel Door
The PD4-6624 is equipped with four buttons located
under the lower panel door. The F2 function key is set
up to reset the total. If reset grand total is enabled, it
is possible for the user to reset either the total or the
grand total.
Total Reset via Remote Contact
The PD4-6624 is equipped with remote contacts
located behind the lower panel door of the meter.
These can be connected to a PDA2364-MRUE
control station for remote operation of all four
programming / operation buttons. The F2 function key
is set by default to reset the total and grand total.
Total Reset via Digital Input
The PD4-
6624’s digital input may also be used to reset
the total or grand total.
Total Reset Password Protection
Total and grand total passwords may be set to
prevent resetting the total or grand total unless a
password is entered. Grand total reset may be
disabled through the meter interface, and it may also
be permanently disabled. See
Enabling Password
Protection (
PASSWRD
) on page 62 for details.
Runtime & Cycle Count (
INFO
)
The relay information menu shows runtime and cycle
count for each relay. These values may be cleared at
any time by selecting the
Clear option (
CLEAR?
). If
the cycle count or runtime values need to be changed
on a frequent basis, it would be convenient to set up a
front panel button or the digital input to simplify this
process.
Note: See the menu tree under Solid-State Relay Outputs
( RELAY ) on page 47 for complete menu structure on this
feature.
Meter displaying the
amount of time a relay
has been activated Meter displaying the
number of times a relay
has cycled
Changing Engineering Units
It is possible to change the display units without the
need to re-scale the meter. The
UNITS
menu in the
DISPLAY
menu allows the unit of measure to be
changed (e.g. from gallons/second (
GAL/s
) to
liters/second (
L/s
)) and the meter will automatically
convert the display values to the new unit of measure.
If entering a custom unit (
CUSTOM
), a custom
conversion factor will need to be entered. See
Changing the Engineering Units (
UNITS
) on page 38 .
INFO
RELAY 1
RELAY
RUNTIME
TIME
195.0 H
ENTER
F3
MENU
F1
Flashes
Briefly
CYCLE
COUNT
CYCLE
51
RLY 1
CLEAR?
F1
Flashes
Briefly