Instruction manual

12.0 TROUBLESHOOTING SM425 INSTRUCTION MANUAL
12.0 TROUBLESHOOTING
This section describes errors and alarms detected by the self-diagnostic function of the converter. This
section also describes the check and restoration methods to use when problems other than the above
occur.
12.1 Errors: Displays and Corrective Actions
12.1.1 What is an Error?
An error is caused by an abnormality in the detector or the converter, e.g., a malfunction in the cell
(sensor) or heater in the detector, or a circuit failure in the converter. If an error occurs, the converter
performs the following:
1. Turns off power to the heater in the detector to insure system safety.
2. Initiates a blinking error indication on the display (Figure 12-1).
3. Closes an output contact if the contact has been configured for an error condition (refer to Section
1.48, “Output Contact Setup”).
4. Changes the analog output to the level configured in “Output hold setting” (refer to Section 1.46,
“Output Hold Setting”).
When the display shown in Figure 12-1 appears, pressing the error indication brings up a description of
the error (Figure 12-2). The possible errors are listed in Table 12-1.
Figure 12-1 Error indication display
Figure 12-2 Error description display
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