Rosemount 5401, Reference Manual

Page: 93 / 180

Reference Manual
00809-0100-4026, Rev FA
July 2009
7-3
Rosemount 5400 Series
TROUBLESHOOTING
OVERVIEW
Table 7-1 below gives information on the possible causes of system
malfunctions. It also lists the symptoms and necessary actions to be taken.
Table 7-1. Troubleshooting
chart
Symptom Possible cause Action
No level reading
• Power disconnected
• Data communication cables
disconnected
• Check the power supply
• Check the cables for serial data communication
• Check LED/Display
No HART communication
• COM Port configuration does
not match the connected COM
Port
• Cables may be disconnected
• Wrong HART address is used
• Hardware failure
• HART resistor
• Check that correct COM Port is selected in the HART
server (see “Specifying the COM Port” on page 5-14)
• Check the COM port buffer, “Specifying the COM Port”
on page 5-14
• Check wiring diagram
• Verify that the 250 Ohm resistor is in the loop, see
Figure 4-10 on page 4-10
• Check cables
• Make sure that correct HART short address is used. Try
address=0
• Check the COM Port Buffer setting, see page 5-14
• Check Analog Output current value to verify that
transmitter hardware works
Analog Out is set in Alarm
• Measurement Failure or
Transmitter Failure
• Open the Diagnostics window in RRM to check active
errors and alarms, see “Diagnostics” on page 7-17
• See also “Analyzing the Measurement Signal” on
page 7-4 and “Analog Output Status” on page 7-26
Incorrect level reading
• Configuration error
• Disturbing objects in the tank
• See “Application Errors” on
page 7-27
• Check the Tank Height parameter; RRM>Setup>Tank
• Check status information and diagnostics information,
see “Diagnostics” on page 7-17
• Check that the transmitter has not locked on an
interfering object
• See “Analyzing the Measurement Signal” on page 7-4
Integral display does not work
• Check the display configuration in Rosemount Radar
Master (open menu Setup>General)
• Diagnostics
• Contact Emerson Process Management Service
Department
(1)
Temperature Measurement
Failure
• Check ambient temperature
(2)
• Restart gauge
• Contact Emerson Process Management Service
Department
Level Measurement Failure
• Check Power Supply
• Check the gauge configuration
• Check that the mechanical installation is correct
Volume Measurement Failure
• Restart gauge
• Check gauge configuration using PC Based
configuration tool
No surface echo
• Check signal strength
• Restart transmitter
• See “Analyzing the Measurement Signal” on page 7-4
(1) A malfunctioning display panel may only be replaced by service personnel at Emerson Process Management Service Department.
(2) If the 5400 transmitter has been exposed to temperatures outside the specified limits, the device may stop its normal operation.