Emerson Rosemount 56, Instruction Manual

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Profibus Communications 105
Instruction Manual Section 12: Profibus Communications
LIQ-MAN-56 April 2017
Main Board Warnings
Bit GSD Descriptor Help
33 Unknown
Power Supply
The main board software cannot identify the power supply.
1. Check the ribbon cable connections between the power
supply board and main board.
2. Check the ribbon cable for damage.
3. Consult the factory.
34 Line Fre-
quency Un-
known
The analyzer has detected an AC power source, but the
frequency is not 50 Hz or 60 Hz.
1. Check the ribbon cable connections between the power
supply board and main board.
2. Check the mains frequency.
35 Main Board
Factory Cal
The analyzer was not calibrated at the factory.
1. Try to reset the analyzer by turning the power off then on
again.
2. Call the factory.
36 Keypad Error The analyzer has detected shorted contacts in at least one key. Call
the factory.
37 Overheating
LCD Warning
High ambient temperature and high temperature inside the
analyzer is causing the LCD to overheat, reducing the operating
life of the display. The analyzer automatically begins reducing
the brightness of the display at 55 °C (131 °F). At 78 °C (172 °F)
analyzer turns off the display and stops storing data in the flash
drive (if one is installed). At 85 °C (185 °F) the analyzer turns off
the analog current outputs. At 90 °C (194 °F) the analyzer turns
off the relays. As the temperature cools, the functions are
restored. To prevent shutdown of the display and loss of other
analyzer functions, move the analyzer to a cooler place.
38 Excess Output
Current
One or more analog outputs are drawing too much current, and
all outputs have been shut down. The analyzer will check the
current every 30 seconds and will return the outputs to normal
operation once the current drops below the shutdown limit.
Check analog output wiring. A short from the positive terminal
to ground will cause excessive current to flow. Even if only one
output is shorted, all four outputs will be shut down.
If no wiring problems are found, the main board has been dam-
aged and must be replaced.
Table 12-13. Main Board Diagnostic Bits – Main Board Warnings