Nova-Tech LMI Series HH Metering Pump - Manual (Page 26)

26
External Mode Select: Pulse Divide, Pulse Multiply, and
mA Response
Any of three external modes may be selected when the pump is
stopped by pressing and holding the I
N
T T
MODE
E
X (Mode) key and
START
STOP
(Start/Stop) key for five (5) seconds, then releasing. As noted
above, the default is Pulse Divide. Pressing and releasing these
keys brings you to the Pulse Multiply mode
X
EXT . In this mode,
the LCD screen alternates between the pulse multiply value and
OFF. Pressing and releasing these keys one more time brings you
to the third external mode, mA response
MIN
mA EXT . In this mode the
LCD screen alternates between SPM and the mA value.
Summary of External Mode Select
12.1 Programming the Pulse Divide Value
The divide value is altered by using the ( Up) and (Down)
keys. To do this, the pump must be in the External Divide mode and
be OFF. The valid range for the divide value runs from 1 to 999. With
the pump running in the Divide mode, the speed in SPM is calculated
based on the rate of incoming pulses and the divide value, and
displayed on the LCD screen
MIN
EXT
:
.
If the calculated speed is less than one (1) SPM, the LCD screen
will display 0 SPM. If the calculated speed is GREATER THAN
100 SPM, the E3 error code will be displayed periodically until
the fault condition is corrected
MIN
EXT
:
. This error does
NOT activate the alarm outputs or stop the pump.
MIN
mA EXT
X
EXT
EXT
:
START
STOP
I
N
T T
MODE
E
X
+
For 5 Seconds
START
STOP
I
N
T T
MODE
E
X
+
For 5 Seconds
START
STOP
I
N
T T
MODE
E
X
+
For 5 Seconds