INFICON Composer Gas Concentration Controller - Manual (Page 139)

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Composer Operating Manual
6.5 User Diagnostics
Various failure modes can be identified by (1) carefully watching the WARNING
LED located on the front panel of LED display units, or (2) decoding the err
value displayed on LCD units. Various failure modes can be identified. See
Table 6-7 . There are three types of failure modes:
fatal errors . . . . . . . . . . . . . . . . . . no instrument function takes place. Some
communications are operative, except for
remote commands. The Error relay is open.
errors . . . . . . . . . . . . . . . . . . . . . . the instrument continues to function and
enters Stop or Bypass. Control cannot be
entered until the error has been corrected.
The Error relay is open.
warnings . . . . . . . . . . . . . . . . . . . . a temporary condition that causes one bad
reading will either correct itself or result in
an error being indicated, or certain gas
parameter values may lead to ambiguous
concentration calculations.
Table 6-7 User Diagnostics
Error
Designation/
Type
Meaning
Warning LED
Priority/
Pattern
Indication Actions Retry/Clear
Display and
Communic
ations
Error Code
(hex)
NOVRAM
checksum failure/
Fatal The battery backed RAM
checksum test failed.
The parameters stored in
memory have been set to
default values. Double Medium
Blink Warning
LED
Error Relay
opens Set NOVRAM to
defaults. Place
into error/idle
mode.* Clear with
Reset 0x8000
TI Init fail/
Fatal The settings sent to the
AtoD / DtoA chips that are
connected to the driver and
receiver did not match the
settings query. Full On Warning
LED
Error Relay
opens Place into
error/idle mode. Clear with
reset 0x4000
Temp. Init fail/
Fatal The settings received from
the temperature AtoD
converter chip, do not
match what was sent. Full On Warning
LED
Error Relay
opens Place into
error/idle mode.* Clear with
Reset 0x2000
DSP Boot fail/
Fatal The DSP checksum test
failed. If DSP truly failed to
boot the TI initialization will
also fail. Full On Warning
LED
Error Relay
opens Place into
error/idle mode.* Clear with
Reset 0x1000
Temp. Control
failure/
Fatal The heater is off and the
temperature has been
rising for 10 seconds. Rapid Blink
(~3.5 Hz, 50%
duty) Warning
LED
Error Relay
opens Place into
error/idle mode.* Clear with
Reset 0x0800
* - error/idle mode - only limited communications operative. No measurement or control functions operative.
Heater is off. Error relay opens, all other relays open.