ABB STT04 Instruction Manual page 71

TROUBLESHOOTING
Table 5-2. STT04 Error Messages for ABB FSK Devices
Message
FIELD DEVICE
EPROM
CHECKSUM ERROR
FIELD DEVICE
INPUT
OVER RANGE
FIELD DEVICE
INPUT
UNDER RANGE
FIELD DEVICE
INTERNAL
REFERENCE
FAILURE
FIELD DEVICE
MAIN INPUT
FAILURE
FIELD DEVICE
MICROCOMPUTER
HAS BAD EEPROM
ERROR MESSAGES
5 - 8
Affected
Probable Cause
Device
AVS Abnormal power up
BCN occurred.
EQN
Program chip on micro-
TBN
computer board is bad.
Configuration has been
lost or corrupted.
AVS Input out of range.
BCN
EQN
EQS
PTS Input greater than cell
specification.
PTS Input less than cell
specification.
AVS Input value too low.
EQS
AVS Reference problem on
BCN circuit board.
EQN
EQS
XM/SM/
XE
PTS Reference problem on
circuit board.
BCN Sensor failure.
EQN
TBN
Input board failure.
BCN Microcomputer cannot
EQN retain configuration and
TBN calibration data.
(continued)
Corrective Action
Remove power from the field device and
reapply.
Replace microcomputer board. Refer to
repair/replacement section of the appro-
priate product instruction for procedures.
Resend the configuration.
Reduce process input, or configure
proper limits. To verify proper limits use
to view the limits.
GET CONFIG
Reduce input pressure.
Increase input pressure.
Increase process input, or configure
proper limits. To verify proper limits use
to view the limits.
GET CONFIG
Check connections. Replace electronics
assembly. Refer to repair/replacement
section of the appropriate field device
instruction.
Replace amplifier assembly. If problem
still exists, replace cell and characteriza-
tion board. Refer to the repair/replace-
ment section of the appropriate PTS
instruction.
Check input board connections. Refer to
repair/replacement section of the appro-
priate product instruction.
Replace input board. Refer to repair/
replacement section of the appropriate
product instruction.
Replace the microcomputer board. Refer
to repair/replacement section of the
appropriate product instruction.