Instruction manual

Troubleshooting
continued
RFT9739 Field-Mount Transmitter Instruction Manual 71
Before You Begin Getting Started Mounting
Power-Supply and
Sensor Wiring
Output Wiring Startup Troubleshooting
Informational messages
Information messages are described below.
Table 7-6
summarizes
informational messages and lists typical corrective actions.
Power Reset
indicates a power failure, brownout, or power cycle has
interrupted operation of the transmitter. The transmitter has a nonvolatile
memory, which remains intact despite power interruptions.
Cal in Progress
indicates flowmeter zeroing in progress or density
calibration in progress.
Zero Too Noisy
indicates mechanical noise has prevented the
transmitter from setting an accurate zero flow offset during transmitter
zeroing.
Zero Too High or Zero Too Low
indicates flow was not completely shut
off during sensor zeroing, so the transmitter has calculated a zero flow
offset that is too great to allow accurate flow measurement. Zero Too
Low indicates the zero flow offset is negative.
Burst Mode
indicates the user has configured the transmitter to send
data in burst mode while operating under HART protocol. In burst mode,
the transmitter sends data at regular intervals.
mA 1 Fixed or mA 2 Fixed
indicates one of several conditions:
• The mA output trim or test was not completed. The output remains
fixed at the assigned level until the user completes the output trim or
test procedure.
• The user has assigned a polling address other than 0 to the transmitter
for Bell 202 communication. The output remains fixed at 4 mA until the
user assigns the transmitter a polling address of 0.
Event 1 On or Event 2 On
switches ON if an event tied to an RFT9739
output switches the output ON.
• With mass or volume total assigned to the event, the event switches
ON and OFF according to the low or high configuration of the alarm.
With a LOW alarm, the event switches ON when the user resets the
totalizer. With a HIGH alarm, the event switches OFF when the user
resets the totalizer.
• With flow, density, temperature, or pressure assigned to the event, the
event switches OFF or ON whenever the process variable crosses the
setpoint.
Security Breach
indicates the transmitter security mode has been
changed from security mode 8. Clear the message by reentering
security mode 8 or by performing a master reset.
Error Cleared
indicates a previous message has been cleared.