SMC sierra monitor corporation Sentry Instruction Manual - Version 6
INSTALLATION
Page: 21
3.5.6 POWER UP
Systems shipped complete from the factory are pre-
configured and calibrated. When power is turned on the
power light will start flashing and the alpha-numeric
display will indicate "SYSTEM WARM-UP" "PLEASE WAIT
MM:SS" (where MM:SS is a five minute count-down
clock). When the warm-up ends the two displays will
begin functioning in the "continuous scan" mode which is
described in the next chapter. The large display will cycle
through each module number for any modules which have
been installed.
If modules have been added to the system since it was
factory configured, those modules will have a blank (“—“)
concentration display and the lower display will show the
module type and units with "FACTOR MISSING" or
"UNCALIBRATED" messages.
If the display indicates module numbers which match the
numbers used in installation, the wiring is correct and
module configuration can begin. If any number is omitted
the controller is not recognizing that module and the wiring
should be checked for errors (the system will display "NO
MODULE" when any attempt is made to obtain information
on that module).
If the controller does not recognize any modules the
display will read "NO MODULES INSTALLED".
NOTE
On 2 and 4 Channel systems any module set with a
number higher than four will cause the lower display to
indicate "MODULE # MUST BE 1 THROUGH 4" and
the upper display to display "#E --" (where # = the
erroneous module number).
3.5.7 POWER DOWN
If it is necessary to remove the power all operator
configured data and parameters will be saved by Sentry. (It
is important to turn off the main power prior to
disconnection of any module wiring because while under
power Sentry will interpret certain changes as errors.)