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Instruction Manual
3.4.1 Control Modes
3.4.1.1 Local/Internal Mode
1. When in local mode Roytronic Excel pumps run
at the speed indicated on the LCD Display.
2. The stroking speed can be adjusted from the
maximum speed of 120 strokes per minute
(SPM) down to 1 stroke per hour (SPH).
3.4.1.2 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.
3.4.1.3 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.
3.4.1.3.1 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.
3.4.1.3.2 Multiply Mode (for AD8)
The pump is in Multiply Mode when a multiplication
symbol (X) is shown on the left-hand side of the
LCD Display. Use the Up Button and Down Button
to select the number of 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.
SECTION 3 - OPERATION