ATI Q46H/85 PAA System Part 6 – Configuration
42
O&M Manual
Rev F (8/17)
controller (manual reset.) Increasing this value will make the controller
more responsive.
PID Deriv Derivative is a second order implementation of Integral, used to supress
[Iout1=PID] “second-order” effects from process variables. These variables may
include items like pumps or mixers that may have minor impacts on the
measured value. The derivative factor is rarely used in water treatment
process, and therefore, it is best in most cases to leave it at the default
value. Increasing this value will make the controller more responsive.
Set 4 mA These functions set the main 4 and 20 mA current loop #1 output points
Set 20 mA for the analyzer when output 1 is in normal, [Iout1= PAA] non-PID, mode
of operation.
The value stored for the 4 mA point may be higher or lower than the
value stored for the 20 mA point. The entry values are limited to values
within the range specified in “Set Range”, and the 4 mA and the 20 mA
point must be separated by at least 1% of this range Use the LEFT arrow
key to select the first digit to be modified. Then use the UP and LEFT
arrow keys to select the desired numerical value. Press ENTER to store
the new value
Set 4 mA #2 These functions set the second 4 mA and 20 mA current loop output
Set 20 mA #2 points for the transmitter. The output may be set to track temperature
[temp/PAA/pH] (default), pH, or PAA. The values stored for the 4 mA point may be
higher or lower than the value stored for the 20 mA point.
The entry value is limited to a value between 0° and 55°C if it is set for
temperature, within the range specified in “Set Range” if the output is set
to track PAA, and must be within 0-14 pH if set to track pH. The 4 mA
and the 20 mA point must be at least 20 units away from each other.
Press ENTER to initiate user entry mode, and the value will flash. Use
arrow keys to modify value. Press ENTER to store the new value.
NOTE: If the temperature units are changed between °C and °F (see
Temp Units in this section), the default settings for this output will be
stored (present data is not converted.)
NOTE: If the battery board option is installed, the menu will be shown as
Set 0 V #2 – since the battery board has two 0-2.5 VDC voltage output
signals instead of current outputs.
*Set 4 mA #3 These functions set the optional third 4 mA and 20 mA current loop
*Set 20 mA #3 output points for the analyzer. The output may be set to track
OPTIONAL. temperature (default) or PAA. The values stored fir the 4 mA point may
[temp/H
2
O
2
] be higher or lower than the value stored for the 20 mA point. The entry
value is limited to a value between 0 and 55 °C if it is set for temperature,
within the range specified in “Set Range” if the output is set to track PAA.
The 4 mA and the 20 mA point must be at least 2 units away from each
other. Press ENTER to initiate user entry mode, and the value will flash.
Use arrow keys to modify value. Press ENTER to store the new value.
NOTE: If the temperature units are changed between °C and °F (see Temp
Units in this section), the default settings for this output will be stored
(present data is not converted.)
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