ATI
Q46C2 2Electode Conductivity System
Part 7
– Diagnostics
40
O&M Manual
Rev-H (6/19)
actually receiving the signal from the sensor. This allows the user to check
the function of attached monitoring equipment during set-up or
troubleshooting. Escaping this screen returns the unit to normal operation.
Press ENTER to initiate the user entry mode, and the right-most digit of
the value will flash. Use arrow keys to modify desired value.
The starting display value in SIM mode will be the last read value of the
input. The output will be under control of the SIM screen until the ESC key
is pressed. The instrument will automatically terminate the simulated
output after 30 minutes and return to normal operation
unless the “HOLD”
function is engaged.
Note:
If the HOLD function is engaged before the Sim Output function is
engaged, the simulated output will remain the same even when the ESC
key is pressed. Disengage the HOLD function to return to normal output.
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.
Fail Out #1
This function enables the user to define a specified value that the main
current output will go to under fault conditions. When enabled to
ON
, the
output may be forced to the current value set in
Fail Val
(next item.) With
the Fail Out setting of ON, and a Fail Val setting of 6.5 mA, any alarm
condition will cause the current loop output to drop outside the normal
operating range to exactly 6.5 mA, indicating a system failure that requires
attention.
Press ENTER to initiate user entry mode, and the entire value will flash.
Use the UP arrow key to modify desired value; selections are
ON
,
OFF
.
Press ENTER to store the new value.
Fail Val #1
Sets the output failure value for Iout#1. When
Fail Out
above is set to
ON,
t
his function sets value of the current loop under a FAIL condition. The
output may be forced to any current value between 4-20 mA.
Press ENTER to initiate user entry mode, and the entire value will flash.
Use the UP arrow key to modify desired value; selections are between
4mA
, and
20mA
. Press ENTER to store the new value.
Fail Val #2
This function sets the value of current loop output #2 under a FAIL
condition. The settings and operation are identical to Fail Out for output
#1.