ABB STT04 Instruction Manual page 67

TROUBLESHOOTING
Table 5-1. STT04 Error Messages for HART Devices
Affected
Message
MORE STATUS AVAIL. All HART HART device has more
NON-PV OUT OF All HART Process applied to the
LIMIT
OPEN SENSOR
PV OUT OF LIMITS All HART Process applied to the
RAM FAILURE
REF JUNCTION
FAILURE
SHORTED SENSOR
SPAN ZERO KEY
ERROR
TEMP OFFSET
WARNING
ERROR MESSAGES
5 - 4
Probable Cause
Device
status available, but is
not understood by the
STT because the device
is not supported by the
STT.
nonprimary variable is
outside the operating lim-
its of the field device.
EBTH Field device temperature
transducer failure.
Field device temperature
transducer not con-
nected.
transmitter is outside the
transmitter limits.
PTH Internal RAM failure.
EBTH
EBTH Reference junction (CJC)
failed.
EBTH Temperature transducer
failure.
Field wiring shorted
PTH Misoperation of EZ CAL
option.
Damaged EZ CAL option. Replace EZ CAL option. Refer to the repair/
Damaged amplifier
assembly.
TB82 High or low temperature
offset
(continued)
Corrective Action
Contact ABB technical support.
Correct process input.
Replace the temperature transducer. (i.e.,
thermocouple, RTD).
Connect the proper transducer
(i.e., thermocouple, RTD).
Correct the process input.
Replace electronics. Refer to the repair/
replacement section of the appropriate
product instruction.
Replace the amplifier assembly.
Replace temperature transducer.
Find and correct the wiring problem.
Try again.
replacement of the appropriate PTS product
instruction.
Replace amplifier assembly. Refer to the
repair/replacement section of the appropri-
ate PTS product instruction.
Verify sensor wiring connections and
inspect cable for shorts. Remove all poten-
tial shorts to ground, conduit or metals.
Verify that sensor had 10 to 15 min. to accli-
mate to temperature environment to which it
was calibrated.
Disconnect temperature compensator leads
from transmitter and measure resistance.
Replace sensor with spare when transmitter
does not accept calibration values.