The DCP551 is equipped with the self-diagnostic functions described below. Alarm codes and the result of self-diag-
nostics are listed on the following pages.
■
Power ON self-diagnostic routines
●
RAM backup failures
This routine is designed to detect errors in the RAM backup function. When a failure is
detected, a general reset is performed. No alarm code is displayed.
●
Board configuration failures
This routine detects failures caused when boards (circuit boards) not designed to be used
with the DCP551. Alarm codes are displayed when errors are detected.
■
Self-diagnostic routines performed each sampling cycle
●
Analog input failures
Failures are detected when the analog input signal due to disconnection or other cause
lies outside the –10.0 to +110.0% range.
Alarm codes are displayed when errors are detected.
■
Self-diagnostic routines performed continuously during operation
●
PROM failures
This routine is designed to detect errors in system programs stored in the PROM. Not
totally infallible, there are cases where errors go undetected and result in measuring
device operation failure.
Alarm codes are displayed when errors are detected.
●
Adjustment data failures
This routine detects errors in analog inputs and output adjustment data stored in non-
volatile memory. Alarm codes are displayed when errors are detected.
●
Program failures
This routine detects failures in program setting data stored in a backup RAM. Alarm
codes are displayed when errors are detected..
●
Parameter failures
This routine detects failures in parameters stored in a backup RAM. Alarm codes are
displayed when errors are detected.
●
Low battery voltage
This routine detects low voltage conditions in the battery that backups RAM data. The
BAT
LED on the console goes on when battery voltage is too low.
Chapter 10. TROUBLESHOOTING
10-1 Self-Diagnostic Functions and Alarm Code Displays
10-1
Содержание DCP550
Страница 1: ...EN1I 6186 Issue 13 04 08 DCP551 Mark ΙΙ Digital Control Programmer User s Manual www honeyvell energy ...
Страница 115: ...Chapter 7 PARAMETER SETUP Settings by event type For information on event operations see Events pages 5 5 to 5 15 7 13 ...
Страница 117: ...Chapter 7 PARAMETER SETUP 0 1 02 3 02 3 0 1 1 4 5 1 4 6 1 4 5 2 2 2 7 15 ...
Страница 119: ...Chapter 7 PARAMETER SETUP 0 11 2 2 3 3 7 17 ...
Страница 122: ...Chapter 7 PARAMETER SETUP d A5 tP A5 CP A5 rE A5 P A6 I A6 d A6 rE A6 CP A6 tP A6 P A7 I A7 d A7 rE A7 CP A7 tP A7 7 20 ...
Страница 209: ...Chapter 12 CALIBRATION Figure 12 11 Current Outputs 12 18 ...
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Страница 230: ...No CP UM 5024E ...