
55
Reference Manual
00809-0200-4648, Rev BB
Troubleshooting
July 2016
Troubleshooting
Table 6-2. Rosemount 648 Wireless Troubleshooting
Symptom
Potential source
Recommended action
High output
temperature
detected
Sensor input failure or connection
1. Connect a Field Communicator and enter the transmitter
test mode to isolate a sensor failure.
2. Check for a sensor open or short circuit.
3. Check the process variable to see if it is out of range.
Electronics module
1. Connect a Field Communicator and enter the transmitter
status mode to isolate module failure.
2. Connect a Field Communicator and check the sensor limits to
ensure calibration adjustments are within the sensor range.
Digital
temperature
output is
erratic
Wiring
1. Check sensor wiring integrity at all junctions to ensure
proper connections.
Electronics module
1. Connect a Field Communicator and enter the transmitter
test mode to isolate module failure.
Low output or
no output
Sensor element
1. Connect a Field Communicator and enter the transmitter
test mode to isolate a sensor failure.
2. Check the process variable to see if it is out of range.
Electronics module
1. Connect a Field Communicator and check the sensor limits to
ensure calibration adjustments are within the sensor range.
2. Connect a Field Communicator and enter the transmitter
test mode to isolate an electronics module failure.
Table 6-3. LCD Display Troubleshooting
Symptom
Potential source
Recommended action
LCD display not
operating
Electronic module
Make sure the LCD display in enabled
Connector
Make sure the LCD display pins are not bent
LCD display
Make sure the LCD display is properly seated with the tabs
snapped in place and fully engaged
Table 6-4. Wireless Network Troubleshooting
Symptom
Recommended action
Device not joining
the network
1. Verify network ID and join key.
2. Verify network is in active network advertise.
3. Wait longer (30 minutes).
4. Check power module.
5. Verify device is within range of at least one other device.
6. Power cycle device to try again.
7. Verify device is configured to join. Ensure the Join Mode is configured to “Join on Powerup or
Reset”.
8. See troubleshooting section of Smart Wireless Gateway for more information.
Short battery life
1. Check that “Power Always On” mode is off.
2. Verify device is not installed in extreme temperatures.
3. Verify device is not a network pinch point.
4. Check for excessive network rejoins due to poor connectivity.
Limited bandwidth
error
1. Reduce the update rate on transmitter.
2. Increase communication paths by adding more wireless points.
3. Check that device has been on line for at least an hour.
4. Check that device is not routing through a “limited” routing node.
5. Create a new network with an additional Smart Wireless Gateway.
Содержание Rosemount X-well 648
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