Kistler-Morse KM Weigh II - Manual (Page 33)

Chapter 5. Inputs and Outputs
5-5
1. If the Weigh II is in Auto Mode (Auto LED
illuminated), press the Auto/Man Key to
put the system in Manual Mode. The Auto
LED turns off.
2. Use the Up Arrow or Down Arrow Keys to
scroll to the desired channel.
3. Press the Menu Key to display the Main
Menu. The display shows:
4. Press the F2 Key to access the I/O Menu.
The display shows:
5. Press the F1 Key to access the Setpt
Menu. The display shows:
6. Press F3 to access the Report Menu. The
display flashes a message stating:
The display then changes to:
7. Press any key other than the Esc Key and
the Auto/Man Key to toggle through the
setpoints to view their slot and channel
numbers.
8. Press the Esc Key to return the display to:
9. Press the Esc Key to scroll up the menu
tree or press the Auto/Man Key to return
the display to vessel monitoring.
Iout
Current output is typically used to retransmit
continuous weight data to a remote display or
PLC/Distributed Control System (DCS). The
current output setup functions are accessed
in this menu. The functions include adding
and deleting current outputs, and selecting
fail-safe, net/gross, and operating modes.
Depending on the options you selected, up to
two sets of current outputs can be assigned
per vessel or math channel. The Descriptions
section defines each of the parameters. The
Setting Up the Current Output and Current
Output Report sections provide the proce-
dures for using the Weigh II.
Descriptions
Set
This menu is used to select the current
outputs, assign values to determine the
points where the transmitter outputs the
currents, designate those values as net or
gross weights, and define a fail safe condition
for the current outputs.
The 4/0ma Menu sets the low current (4 mA
or 0 mA) operation point. The value entered
determines the weight where the transmitter
outputs the minimum current. The 20ma
Menu sets the high current (20 mA) operation
point. The value entered determines the
weight where the transmitter outputs the
maximum current. For both the 4/0ma and
20ma Menu, the ‘-’ Key toggles between
positive and negative for the value entered.
Current outputs may be set to interpret the
value entered for the low current and high
current operation points as either the net or
the gross weight (Net/Grs). An asterisk
indicates the current net or gross condition of
the output. Transmitting current based on the
gross weight is the default mode.
Note
The value entered for the 4/0 mA
operation point does not have to be
smaller than the value entered for the
20 mA operation point.
Example 1: You want an early warning via a
current output to a PLC/DCS that a 20,000 lb
capacity vessel is nearly full or empty. You
enter 3,000 lbs as the low current value and
17,000 lbs as the high current value, both as
gross values, for a 4-20 mA operation. When
the gross weight is 3,000 pounds, 4 mA
current is transmitted, providing an early
warning that the vessel is close to being
empty. When the gross weight is 17,000 lbs,
20 mA is transmitted, providing an early
warning that the vessel is close to being full.
WII MAIN MENU
Disp I/O Cal
F1 F2 F3
INPUT/OUTPUT MENU
Setpt Iout Serl
F1 F2 F3
SETPOINTS
REPORT ON ID#:X
F1 F2 F3
SETPOINTS
Set Report
F1 F2 F3
SETPOINTS
Set Report
F1 F2 F3
SPX Output Chan
Slot YY Chan# ZZ
F1 F2 F3