42
Appendix
(Continued)
Section Seven
TROUBLESHOOTING
(CONTINUED)
PROBLEM
SOLUTION
Transmitter always jumps
to the LOST condition.
Check the dimensional configuration (
Sensor Height
and
Fill Height
) of
LVU500 series. Make sure that the
Fill-H
setting corresponds to the full level of
liquid (measured from the bottom up) and not the distance from the transmitter
to the liquid (top down).
Transmitter output is oppo-
site of the level of liquid.
Check the
Output at Empty
Setting in LVCN414-SW.
No Unit Detected in
LVCN414-SW.
If LVCN414-SW cannot detect LVU500 series when connected to the
computer:
Check that the LVU500-USB Fob is connected to the USB
®
port.
Check that all four wires (Red, Black, White and Green) are securely
attached to the Fob.
Check Device Manager and confirm that both drivers (LVCN414-SW
Configuration & EchoFob) are present.
If the above do not work, reinstall the LVCN414-SW software while the
computer is in Safe Mode.
Internet error. The server
name or address could not
be resolved.
This is a warning indicating that the computer configuring LVU500 series is not
connected to the Internet. Click
OK
to continue. Omega Engineering recommends
being connecting to the Internet during configuration. But, not being connected to
the Internet will not prevent LVU500 series from being configured.
Cannot access some of
the configuration features
in LVCN414-SW.
As choices are made in Configuration, LVCN414-SW will begin to eliminate
functions that are not applicable to a configuration. To reset Configuration or
get access to all the features, click on the
Clear Screen
button.
Relay closes, but does not
open again.
An inductive kick may be holding the relay closed. If switching 24 VDC, make
sure a diode has been installed to act as a snubber (see Step Nine).
Note:
LVU500 series
uses latching relays. When power is removed to the sensor, the
relays will remain in their last state. Ex: If the relay is energized, when power is
removed, the relay will remain in an energized state.
Relay chatters on and off
repeatedly.
Most likely the turbulence in the tank is causing the chatter. Increase the
Hysteresis setting in LVCN414-SW to eliminate the chatter.
No unit detected error 1
Both errors can occur when the Display is still plugged in when connecting to
LVCN414-SW. Remove the display from its plug and try again.
Data page read error 2
Data page read error X
(X is any number greater
than 2)
Make sure display is removed. If issue persists, contact a Omega Engineering
representative.
-1 No device is attached to
the USB Fob, or it is
attached incorrectly.
Please correct and try
again.
1. Check the wires connected to the USB Fob as well as to the LVU500 series
terminals.
2. Make sure the cable length between the sensor and the computer is less
than 15’ of total cable.
3. Make sure the display was removed from its plug.
4. If this persists, reboot computer in SAFE mode and re-install the LVCN414-
SW installer program.
-2 Program to loader error
open wires
Check the wires connected to the USB Fob as well as to the LVU500 series
terminals.
