Overview - Emerson Rosemount 648 Reference Manual

Reference Manual
00809-0200-4648, Rev BA
Section 6
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 53
Rosemount
Rosemount 648 Wireless Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 55
LCD Display Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 55
Wireless Network Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 55
6.1

Overview

Table 6-2
common operating problems. If you suspect malfunction despite the absence of any
diagnostic messages on the Field Communicator display, follow the procedures described
here to verify transmitter hardware and process connections are in good working order.
Always deal with the most likely checkpoints first.
™
Table 6-1. Rosemount 648 Wireless Temperature Transmitter Device Status Information
Device status Description
An electronics error that could
Electronics
impact the device measurement
Failure
reading has occurred.
Terminal Block A critical failure has occurred in
Failure the transmitter's terminal block.
The device has detected an open,
Sensor Failure short, or too much resistance for
this sensor.
The wireless radio has detected a
Radio Failure failure or stopped
communicating.
Supply Voltage The supply voltage is too low for
Failure the device to broadcast updates.
The device has detected an
Electronics electronics error that does not
Warning currently impact the device
measurement reading.
Sensor has
The sensor has exceeded the
Exceeded
maximum measurement range.
Limits
Troubleshooting
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Troubleshooting
™
648 Wireless Temperature Transmitter Device Status Information . . . page 53
provides summarized maintenance and troubleshooting suggestions for the most
Recommended action
1. Reset the device.
2. Reconfirm all configuration items in the device.
3. If the condition persists, replace the electronics.
1. Reset the device.
2. Replace the terminal block.
1. Verify the sensor connection and wiring. Refer to the wiring
diagrams found on the terminal compartment to ensure
proper wiring.
2. Verify the integrity of the sensor and sensor lead wires. If the
sensor is faulty, repair or replace the sensor.
3. Reconfirm sensor configuration.
4. Replace the sensor.
5. If problem persists, replace the electronics.
1. Reset the device.
2. If the condition persists, replace the electronics.
1. Replace the power module.
1. Reset the device.
2. Reconfirm all configuration items in the device.
3. If the condition persists, replace the electronics.
1. Check process for possible saturation condition.
2. Verify the appropriate sensor was chosen for the application.
3. Reconfirm sensor configuration.
4. Reset the device.
5. Replace the sensor.
Troubleshooting
July 2016
53