Self-Test Diagnostics Display - Satec C191HM Installation And Operation Manual

Phase energy readings are displayed only in 4LN3/4LL3 and 3LN3/3LL3 wiring modes
if they are enabled in the User Selectable Options menu (see Section 4.9).
When the 4LN3 or 3LN3 wiring mode is selected, the voltages will be line-to-neutral; for
any other wiring mode, they will be line-to-line voltages.
Displayed only in the 4LN3 or 3LN3 wiring mode.

5.3 Self-Test Diagnostics Display

The C191HM periodically performs self-test diagnostics during operation. If the
instrument fails the test, it discards the last measurement results, and an error
code is displayed for one second on all LEDs. Error codes are listed in Table 5-2.
Code '8' indicates normal operation.
Frequent failures may be the result of excessive electrical noise in the region of
the instrument. If the instrument continuously resets itself, contact your local
distributor.
Table 5-2 Self-Test Diagnostic Codes
Code Meaning
1 ROM error
2 RAM error
3 Watch dog timer reset
4 Sampling failure
5 Out of control trap
7 Timing failure
8 Normal power up
9 External reset (warm restart)
NOTE
The C191HM provides a self-check alarm register accessible through communications that
indicates possible problems with instrument hardware or setup configuration. The hardware
problems are indicated by the appropriate bits which are set whenever the instrument fails self-test
diagnostics or in the event of loss of power. The setup configuration problems are indicated by the
dedicated bit which is set when either configuration register is corrupted. In this event, your
instrument will use the default configuration. For more information on the self-check alarm register,
refer to the communications reference guides shipped with your instrument.
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Chapter 5 Data Display