ATI
Q46H/65 Residual Chlorine Dioxide System
Part 6
– Configuration
46
O&M Manual
Rev-J (11/18)
The transfer out of HOLD is bumpless on the both analog outputs - that
is, the transfer occurs in a smooth manner rather than as an abrupt
change. An icon on the display indicates the HOLD state, and the HOLD
state is retained even if power is cycled. Press ENTER to initiate user
entry mode, and entire value will flash. Use the UP arrow key to modify
the desired value, selections are
ON
for engaging the HOLD function,
and
OFF
to disengage the function. Press ENTER to store the new
value. Note - the Set Hold function holds BOTH current levels, as well
as ALL relay settings.
The Set Hold function can also hold at an output value specified by the
user. To customize the hold value, first turn the HOLD function on.
Press the ESC key to go to the DIAG Menu and scroll to Sim Output
using the UP arrow key. Press ENTER. Follow the instructions under
Sim Output (see following page).
CAUTION
:
There is no time-out on the hold feature. Once placed
into hold mode, return to normal operation must be done manually.
Fault List
The Fault List screen is a read-only screen that allows the user to display
the cause of the highest priority failure. The screen indicates the number
of faults present in the system and a message detailing the highest
priority fault present. Note that some faults can result in multiple
displayed failures due to the high number of internal tests occurring. As
faults are corrected, they are immediately cleared.
Faults are not stored; therefore, they are immediately removed if power
is cycled. If the problem causing the faults still exists, however, faults will
be displayed again after power is re-applied and a period of time elapses
during which the diagnostic system re-detects them.
The exception
to this rule is the calibration failure. When a calibration fails, no corrupt
data is stored. Therefore, the system continues to function normally on
the data that was present before the calibration was attempted.
After 30 minutes or if power to the analyzer is cycled, the failure for
calibration will be cleared until calibration is attempted again. If the
problem still exists, the calibration failure will re-occur. Press ENTER to
initiate view of the highest priority failure. The display will automatically
return to normal after a few seconds.
PID Timer
This function sets a timer to monitor the amount of time the PID
controller remains at 0% or 100%. This function only appears if the PID
controller is enabled. If the timer is set to 0000, the feature is effectively
disabled. If the timer value is set to any number other zero, a FAIL
condition will occur if the PID controller remains at 0% or 100% for the
timer value.
If one of the relays is set to FAIL mode, this failure condition
can be signaled by a changing relay contact.
Press ENTER to initiate user entry mode, and the entire value will flash.
Use the UP arrow key to modify desired value; range of value is 0-9999
seconds. Press ENTER to store the new value.
