Troubleshooting - promesstec UDA 50-U Series User Manual

10. Troubleshooting

Error description
1. The device indicates a
permanent overflow.
2. The device indicates a
permanent underflow.
The device shows „Lbr"
3.
in the 7-segment
display.
The device shows „HELP"
4.
in the 7-segment
display.
5. Parameters for input
parameterization are not
available.
The device shows „Err1"
6.
in the 7-segment
display.
7. The device does not
respond as expected.
8. With thermocouple
measurement there are
higher constant
measurement
deviations.
Measures
• The input has a very large measured value, check the
measuring distance.
• The display range of 999 or the specified measuring range
is exceeded, check the interpolation points or selected input
types and the signal range.
• Not all activated interpolation points are parameterized.
Check whether the relevant parameters are set correctly.
• The input has a very small measured value, check the
measuring distance.
• The display range of -1999 or the specified measuring range
is undershot, check the settings.
• Not all activated interpolation points are parameterized.
Check whether the relevant parameters are set correctly.
• Check whether the correct input type is selected. Only
temperature measurements and 4...20 mA show this error
message.
• Check the wiring for contact or correct connection.
• The device has detected an error in the configuration
memory, perform a reset to the default values and
reconfigure the device according to your application.
• The programming lock is activated.
• Enter correct code.
• In case of errors in this category, please contact the
manufacturer.
• If you are not sure that the device has been parameterized
before, restore the delivery state as described in chapter 7.
• Remove strong sources of heat or cold from the direct
vicinity of the device.
• Reduce the switching capacity of the relay switching points
to below 10 mA if possible, since higher switching currents
lead to increased local heating and thus to a greater error in
the reference junction measurement.
• If the deviations are permanent and constant during
operation, the reference junction measurement can be
corrected via the offset.
35
10. Error description