134
Reference Manual
00809-0100-4021, Rev GC
Section 3: HART commissioning
April 2014
Erratic Output
Loop wiring
• Check for adequate voltage to the transmitter. It should be 12.0 to 42.4 Vdc
at the transmitter terminals (over entire 3.5 to 23.0 mA operating range).
• Check for intermittent shorts, open circuits, and multiple grounds.
• Connect a Field Communicator and enter the loop test mode to generate
signals of 4 mA, 20 mA, and user-selected values.
Electronics Module
• Connect a Field Communicator and enter the transmitter test mode to
isolate module failure.
Low Output or No Output
Sensor Element
• Connect a Field Communicator and enter the transmitter test mode to
isolate a sensor failure.
• Check if the process variable is out of range.
Loop Wiring
• Check for adequate voltage to the transmitter. It should be 12.0 to 42.4 Vdc
(over entire 3.5 to 23.0 mA operating range).
• Check for shorts and multiple grounds.
• Check for proper polarity at the signal terminal.
• Check the loop impedance.
• Connect a Field Communicator and enter the loop test mode.
• Check wire insulation to detect possible shorts to ground.
Electronics Module
• Connect a Field Communicator and check the sensor limits to ensure
calibration adjustments are within the sensor range.
• Connect a Field Communicator and enter the transmitter test mode to
isolate an electronic module failure.
Table 3-3. Field Communicator Error Warning Descriptions – HART
(1)
Message
Description
Add item for ALL device types or only
for this ONE device type
Asks the user whether the hot key item being added should be added for all device
types or only for the type of device that is connected.
Command not implemented
The connected device does not support this function.
Communication error
Either a device sends back a response indicating that the message it received was
unintelligible, or the Field Communicator cannot understand the response from the
device.
Configuration memory not
compatible with connected device
The configuration stored in memory is incompatible with the device to which a
transfer has been requested.
Device busy
The connected device is busy performing another task.
Device disconnected
Device fails to respond to a command.
Device write protected
Device is in write-protect mode. Data can not be written.
Device write protected. Do you still
want to shut off?
Device is in write-protect mode. Press YES to turn the Field Communicator off and
lose the unsent data.
Display value of variable on hot key
menu?
Asks whether the value of the variable should be displayed adjacent to its label on
the hot key menu if the item being added to the hot key menu is a variable.
Download data from configuration
memory to device
Prompts user to press SEND softkey to initiate a memory to device transfer.
EEPROM Error
Reset the Device. If the error persists, the device has failed. Contact a Rosemount
Service Center.
EEPROM Write Error
Reset the Device. If the error persists, the device has failed. Contact a Rosemount
Service Center.
Table 3-2. HART / 4–20 mA Basic Troubleshooting
Symptom
Potential source
Corrective action
Summary of Contents for Rosemount
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Page 188: ...178 Reference Manual 00809 0100 4021 Rev GC Section 5 Maintenance April 2014 Maintenance ...
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