Reference Manual
00809-0100-4731, Rev FA
April 2003
4-5
APEX
™
and APEX Sentry
™
Radar Gauge
intTempOutOfRang
or
Internal PRT out of range
The APEX gauge internal temperature
appears to be less than –40 °F (–40 °C) or
greater than 185 °F (85 °C).
Take appropriate measures to ensure that the
housing remains within the specified temperature
limits. See Appendix A: Reference Data.
invalidConfigur
A background task that validates the APEX
gauge configuration has found one or more
discrepancies.
This flag is also set if certain key items (polling
address, LCD language, dynamic variable
assignments, sample time) must be reset to
reasonable values at start-up.
Cycle power or use a 275 or RCT to reset.
Verify configuration after Master Reset; verify
4-20 mA settings, null zone configurations,
Reference Gauge Height, empty tank detection
zone, etc.
Invalid DSP Command
or
DSP Error #26
Internal Software Error
Call Rosemount Customer Central. The unit will
most likely need to be sent in for repair.
INVALID TEST CMD PARAM
or
DSP Warning #27
Configuration Warning
Verify 4-20 mA settings, null zone configurations,
Reference Gauge Height, empty tank detection
zone, etc.
If error persists, call Rosemount
Customer Central.
DSP Error #5
Electronics Failure: Inadequate signal strength
returning to gauge.
Cycle power or use a Model 275, AMS,
or RCT to reset. If error does not
clear, call Rosemount Customer Central for
additional troubleshooting. Unit may
need repair.
lowTermVoltage
The power supply for the HART
communications loop has dropped below 5 V;
current will be fixed at 1 mA.
Provide a proper power supply for HART
communications (10.5 - 55 vdc).
Low Signal Strength
or
DSP Warning #1
Inadequate Return Signal
Check nozzle for obstructions/debris that could
weaken the signal
May occur in applications with occasional foam or
in presence of low dielectric and heavy
turbulence.
ramFailure
Write/read tests of RAM failed.
Cycle power or use a 275 or RCT to reset.
romChecksum
or
romChecksumFailure
The checksum for the ROM code does not
match the contents.
Cycle power or use a 275 or RCT to reset.
rtdOutOfLimits
or
RTD out of sensor limits
RTD is missing, wired incorrectly, or returning
invalid data.
If no RTD should be present, use a 275 or RCT to
disable the RTD.
Otherwise, verify that the RTD is wired and
working correctly.
softwareError
A stack overflow occurred in the transmitter.
Cycle power or use a 275 or RCT to reset.
Target in null zone
or
DSP Warning #5
Process Condition: Target has moved into a
null zone
Verify that null zones are configured correctly for
your tank. (This message will only display for
about one minute; the gauge will start to ignore
the signal after that).
Null zones may need to be adjusted;
see page 3-11. After adjustment, Cycle Power or
use a Model 275, AMS, or RCT to reset. This will
reset the alarm condition.
Target lost or
Error: lost signal
or
DSP Error #7
Configuration or Process Error: APEX cannot
find a target in the tank.
Verify that the unit is configured correctly and that
the beam has a clear shot to the target.
Table 4-1. Alarm and Diagnostic Messages
Displayed Message
Cause
Action
Summary of Contents for Rosemount Apex
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