Xylem A-100NE CHEMICAL PUMPS - Manual (Page 14)

6.4 Mode 2 - 4-20 mA input - In this mode, the on-time of the cycle will
automatically adjust to match the received mA input value. When the mA
input value is equal the programmed maximum, the pump will run
continuously.
Four values must be programmed:
1) ON-T = The amount of time the pump will run, per cycle, when the
minimum mA value is received. (Typically programmed to zero)
2) mA minimum = The mA input value that will result in the on time (ON-
T). (Typically programmed to 4 mA)
3) TOT-T = The total cycle time.
4) mA maximum = The mA input value that will result in the pump running
continuously.
Example:
ON-T setting = 0 seconds
mA minimum setting = 4mA
TOT-T setting = 8 seconds
mA maximum setting = 14.8mA
6 4 8 10 12 14 16 18 20
0
2
4
6
8
Pump Run-T
ime (Sec.)
Milliamp input (mA)
A-100NE
Page 14
+
Set the pump for mode 2. Press the
MODE button until MODE 2 is shown on
the LCD display.
+
Enter the programming mode. At the
same time, press the RUN/STANDBY
button and the MODE button. A blinking
ARROW will point to the word PROGRAM
indicating the program mode has been
activated. The on time
ON-T icon will
blink. The currently selected time unit
RUN
PROGRAM
STAND-BY
PRIME
MINIMUM
MAXIMUM
2
00.0
MODE
ON-T SEC
icon will be displayed. The current on time setting will be displayed and
the left most (selected) digit will blink. The decimal is fixed and cannot be
moved.
+
Pressing the DIGIT button will increase the selected digit.
+
Pressing the FIELD button will select a new the digit to the right or the
time unit.
+
Press the DIGIT button to increase the selected digit or time unit.