Instruction manual
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MODEL 5081-C SECTION 10.0
DIAGNOSIS AND TROUBLESHOOTING
10.3 DIAGNOSTIC MESSAGES
The Model 5081-C transmitters' diagnostics constantly monitor the conductivity loop for possible problems. if an opera-
tional problem is encountered, check the display for a fault or error message. These are displayed in the
Temperature/Current output segment of the display. Note the message and refer to Table 10-2 for a description of possi-
ble problems that may have triggered the diagnostic message.
Message Description Action
Faults
tE
M
P LO Temperature is too low. Check wiring or sensor/process temp.
Check RTd .
tE
M
P HITemperature is too high. Check wiring or sensor/process temp.
Check RTd .
Rtd FAIL The RTd sense line fault limits have been exceeded Check wiring or Check Program/Temp
for the sensor. menu setting to verify the 100-3 or
100-4 sensor type connected.
CPU FAIL The CPu has failed during RAM or EEPRo M Recycle. if persistent contact the factory.
verification.
FACt FAIL The transmitter has not been accurately factory calibrated. Contact factory.
rO
M
FAIL The PRo M failed the check-sum test. Contact factory.
CYCLE P
WJ
r A wrong value was detected during power-up. Recycle the power.
w arnings
InPut
WJ
Arn The compensated conductivity limit of 9999 ms/cm is Verify the conductivity range setting.
exceeded.
Over rAngE The current range setting has been exceeded. Verify the 4 and 20 mA settings in the
Program/output menu.
AdC
error
An analog to digital conversion error has occurred. Recycle the power.
(This may come up normally while readings are
changing quickly)
Errors
CAL Err or A calibration error has occurred between the standard Press RESET and repeat.
Offset Err and process. Check calibration standards and unit
configuration.
tSLOPE Err The limit for T-2 in a two point calibration has been Press RESET and repeat the
exceeded. calibrate/temp. slope menu setting.
-0- Err Sensor Zero limit has been exceeded Press RESET and repeat the cali-
brate/sensor menu setting.
WjRITE Err An attempt to the write on the EEPRo M has failed. The jumper JP-1 on the CPu board
has been removed.
TABLE 10-2. Diagnostic Fault Messages.