Auto Diagnosis; Selection Of Units; Safety Readback - Omega DRST-UN User Manual

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Configuration / operation
Section 10.11 - Auto diagnosis
The unit performs an advanced auto diagnosis of the internal circuits.
The following possible errors can by display in the front unit DRSL-DISPLAY.
CJ.ER
FL.ER - Flash error
AO.ER - No load on the current output (only for S4...20 mA/S20...4 mA)
NO.CO - Connection error
IN.ER - Error levels on input
TY.ER - Configuration in DRSL-DISPLAY/DRST-CM does not match this
Section 10.12 - Selection of units
After choosing the input signal type you can choose the process units which will be
displayed in text line 2 (see table). By selection of temperature input the process value
is always displayed in Celsius or Fahrenheit. This is selected in the menu point after
selection of temperature input.
Section 10.13 - Safety readback
When the device is delivered with default configuration, the SIL function is disabled.
The safety readback function (loop surveillance) can be selected in the menu
O.RANGE, thus enabling the device to run in SIL mode. In order to enable the SIL
functionality, the menu item S4...20 mA must be selected. Please note, however, that
when safety readback is enabled, a sensor error will be indicated as an error on the
analogue output signal.
- CJC sensor defect or CJC temperature outside range
product type
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