Alarm Code Display; Alarm Classification; Display Behavior And Alarm Code Upon Input Burnout - Honeywell DCP551 Mark ΙΙ User Manual

Chapter 10. TROUBLESHOOTING

■ Alarm code display

■ Alarm classification

Alarm
code
AL01
AL02
AL03
AL04
AL90
AL92
AL93
AL94
AL95
AL96
AL97
AL99

■ Display behavior and alarm code upon input burnout

10-2
The DCP551 is designed to alternate display of the following alarm codes and normal
display items in one-second intervals on display panel 1 when input failures or instru-
ment system failures are detected.
In cases of multiple alarm codes, display of the codes is alternated with normal display
items, starting in order from the alarm code with the smallest number.
PV range alarm group
Measuring instrument alarm group :
Alarm name
PV1 overrange PV1 is more than 110%FS. Check PV1.
PV1 underrange PV1 is less than –10%FS.
PV2 overrange PV2 is more than 110%FS. Check PV2
PV2 underrange PV2 is less than –10%FS.
Board configuration failure Incorrect board configuration Request the repair.
Adjustment value is abnormal. Analog input/output
adjustment data were broken.
Setup data is abnormal. Setup data were broken. Check the setup data, and reset
Variable parameter is abnormal. Variable parameter were Check the variable parameter,
broken.
PID parameter is abnormal. PID parameter were broken. Check the PID parameter,
(Constant value control data is abnormal.)
Program data is abnormal. Program data were broken. Check the program data,
Event configuration data Event configuration data
is abnormal. were broken.
PROM is abnormal. System program were corrupted. Request the repair.
AL90
*1: When is generated, the alarm code stays on and continued operation is dis-
abled.
*2: Data checks performed by
When this happens, the alarm can be turned off by entering normal data.
Display behavior (upscale/downscale) and alarm code upon input burnout differ
depending on the input type.
Input type
Thermocouple
Resistance temperature detector
DC voltage 1V or less
DC voltage 5V or more
DC current
AL01 AL04
: to
AL90 AL99
to , and battery voltage drop
(In case of battery voltage drop, BAT LED of the
console is flickered.)
Contents
Request the repair.
the data.
and reset the data.
and reset the data.
and reset the data.
Check the event configuration data,
and reset the data.
AL93 AL97
and may fail to detect corrupted data.
Display behavior
Upscale(110%)
Upscale(110%)
Upscale(110%)
Downscale(-10%)
Downscale(-10%)
Countermeasure
Alarm code
AL01 or AL03
AL01 or AL03
AL01 or AL03
AL02 or AL04
AL02 or AL04