Instruction Manual

DataView™ LI55 Level Controller Instruction Manual
97 | Page
Troubleshooting Tips
Symptom Check/Action
No display at all
Check power at power connector
Not able to change setup or
programming,
Locd is displayed
Meter is password-protected, enter
correct six-digit password to unlock
Meter displays error message
during calibration (
Error)
Check:
1. Signal connections
2. Input selected in Setup menu
3. Minimum input span requirements
Meter displays
1.
999999
2.
-99999
Check:
1. Input selected in
Setup menu
2. Corresponding signal at Signal
connecto
r
Display is unstable
Check:
1. Input signal stability and value
2. Display scaling vs. input signal
3. Filter and bypass values (increase)
Display response is too slow
Check filter and bypass values
Display reading is not accurate
Check:
1. Signal input conditioner selected:
Linear, square root, etc.
2. Scaling or calibration
Display does not respond to input
changes, reading a fixed number
Check:
1. Display assignment, it might be
displaying max, min, or set point.
Display alternates between
1.
Hi and a number
2.
Lo and a number
Press Menu to exit max/min display
readings.
Relay operation is reversed
Check:
1. Fail-safe in
Setup menu
2. Wiring of relay contacts
Relay and status LED do not
respond to signal
Check:
1. Relay action in
Setup menu
2. Set and reset points
Flashing relay status LEDs
Relays in manual control mode or relay
interlock switches opened.
Meter not communicating with
application programs
Check:
1. Serial adapter and cable
2. Serial settings
3. Meter address and baud rate
If the display locks up or the meter
does not respond at all
Cycle the power to reboot the
microprocessor.
Other symptoms not described
above
Call Technical Support for
assistance.
Note: Certain sequences of events can cause unexpected results. To solve these
issues, it is best to start fresh from factory defaults and map changes ahead of
time, rather than at random.