Instruction manual

Troubleshooting
continued
RFT9739 Field-Mount Transmitter Instruction Manual 65
Before You Begin Getting Started Mounting
Power-Supply and
Sensor Wiring
Output Wiring Startup Troubleshooting
Fault outputs
The RFT9739 has downscale and upscale fault outputs. (See "Milliamp
output scaling," page 9.) Fault output levels are listed in
Table 7-2
.
Diagnostic messages
The transmitter provides diagnostic messages, which can be viewed on
the display of a HART Communicator, or in the Status window of the
ProLink software program. Messages are described in the following
instruction manuals, and in AMS on-line help:
•
Using the HART Communicator with Micro Motion Transmitters
•
Using ProLink Software with Micro Motion Transmitters
•
Using Modbus Protocol with Micro Motion Transmitters
Use a HART Communicator with the latest memory module, a Modbus
host controller, or ProLink software version 2.3 or higher, to view the
following parameters:
•Drive gain
• Tube frequency
• Left and right pickoff voltages
•"Live zero"
If the transmitter has a display:
• Many of the messages that can be read with a HART Communicator,
the ProLink program, or AMS software can be read from the transmitter
display. These messages are described in
Section 7.5
, page 73.
• Modbus host controllers use status bits as diagnostic messages.
• In the event of a display readback failure while using a HART
Communicator, the ProLink program, a Modbus host controller, or AMS
software, cycle power to the transmitter (turn power OFF, then ON).
Table 7-2. Fault output levels
Output Operating condition Downscale Upscale
0-20 mA Alarm 0 mA 22 mA
EPROM, RAM, or RTI error; transmitter failure 0 mA 24 mA
4-20 mA Alarm 2 mA 22 mA
EPROM, RAM, or RTI error; transmitter failure 0 mA 24 mA
Frequency/pulse Alarm 0 Hz 15 kHz
EPROM, RAM, or RTI error; transmitter failure 0 Hz 19 kHz