Troubleshooting Tips - Siemens SITRANS RD300 Operating Instructions Manual

SITRANS RD300

TROUBLESHOOTING TIPS

Symptom
No display at all
Not able to change setup or
programming, Locd is displayed
Meter displays error message
during calibration (Error)
Meter displays
999999
-99999
Display is unstable
Display response is too slow
Display reading is not accurate
Display does not respond to input
changes, reading a fixed number
Display alternates between
9. Hi and a number
10. Lo and a number
Relay operation is reversed
Relay and status LED do not
respond to signal
Flashing relay status LEDs
Meter not communicating with
application programs
If the display locks up or the meter
does not respond at all
Other symptoms not described
above
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.
A5E31917845 SITRANS RD300 – OPERATING INSTRUCTIONS
Check/Action
Check power at power connector
Meter is password-protected, enter
correct six-digit password to unlock
Check:
1. Signal connections
2. Input selected in Setup menu
3. Minimum input span requirements
Check:
1. Input selected in Setup menu
2. Corresponding signal at Signal
connector
Check:
1. Input signal stability and value
2. Display scaling vs. input signal
3. Filter and bypass values (increase)
Check filter and bypass values
Check:
1. Signal input conditioner selected:
Linear, square root, etc.
2. Scaling or calibration
Check:
Display assignment, it might be
displaying max, min, or set point.
Press Menu to exit max/min display
readings.
Check:
1. Fail-safe in Setup menu
2. Wiring of relay contacts
Check:
1. Relay action in Setup menu
2. Set and reset points
Relays in manual control mode or relay
interlock switches opened.
Check:
1. Serial adapter and cable
2. Serial settings
3. Meter address and baud rate
Cycle the power to reboot the
microprocessor.
Call Technical Support for
assistance.
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