Nova-Tech LMI Roytronic Excel Series AD Metering Pump - Manual (Page 22)

22
OPERATION
4.4.1 Control Modes
4.4.1.1 Local/Internal Mode
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down to 1 stroke per hour (SPH).
4.4.1.2 Changing Displayed Flow Units (AD2, AD8)
1. When in Internal Mode use the Power Button to turn the pump off.
2. Hold the Up Button and Down Button in at the same time until ‘FLO’ is displayed on the LCD
Display, then release the buttons.
3. Use the Up or Down Buttons to select the desired units of measure.
4. Press the Power Button and the pump will return to internal mode with the desired units
displayed.
4.4.1.3 Remote Mode (for AD8)
In Remote mode the pump can be controlled in a variety of ways: pulse divide, pulse multiply, or
analog milliamp input. To cycle through the available modes, start in external mode, then press
and hold the Power Button and Mode Selection Button simultaneously for about five seconds.
4.4.1.3.1 Divide Mode (for AD8)
The pump is in Divide Mode when a division symbol (÷) is shown on the left-hand side of the
LCD Display. Use the Up Button and Down Button to select the number of incoming pulses
received before a stroke occurs. Once the Power Button is pushed to turn the pump on, the LCD
Display will show the approximate stroke rate of the pump based on the incoming pulses.
If it is necessary to change the pulse duration required to recognize a pulse from the factory default
of 60 ms, hold both the Up Button and Down Button until a number appears followed by the
letter ‘m’. This number is the minimum required time in milliseconds needed to count as a pulse.
Use the Up Button and Down Button to adjust this number as needed. If no button is pressed for
about 4 seconds, the pump will save the value and return to the previous screen.
4.4.1.3.2 Multiply Mode (for AD8)
The pump is in Multiply Mode when a multiplication symbol ( ±) is shown on the left-hand side
of the LCD Display. Use the Up Button and Down Button to select the number strokes that will
occur for each incoming pulse. Once the Power Button is pushed to turn the pump on, the LCD
Display will count down the number of strokes starting at the multiplier value each time a pulse
input is recognized. The strokes will occur every half second until it has counted down to zero.
The pump will then wait for the next pulse input.
If it is necessary to change the pulse duration required to recognize a pulse from the factory default
of 60 ms, hold both the Up Button and Down Button until a number appears followed by the
letter ‘m’. This number is the minimum required time in milliseconds needed to count as a pulse.
Use the Up Button and Down Button to adjust this number as needed. If no button is pressed for
about 4 seconds, the pump will save the value and return to the previous screen.
4.4.1.3.3 Analog Mode (for AD8)
The pump is in Analog Mode when ‘mA’ is shown on the left-hand side of the LCD Display.
Pressing the Up or Down Button will display ‘P1’ and the milliamp input that corresponds to zero
strokes. The Up and Down Buttons can be used to adjust this value. Pressing the Power Button
(or waiting for about 8 seconds) will display ‘P2’ and the milliamp input that corresponds to max
stroke rate. Note that the maximum stroke rate will be either 120 strokes per minute or 59 strokes
per hour. This depends on the stroke speed set in Internal Mode.