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DIGITAL INPUT OPERATION
In digital mode, the pump can accept a non-powered (dry contact) pulse signal from a flowmeter or other similar
instrument. The pump can be set to divide pulses by a factor of 1 to 999; or in multiply mode, 1 input pulse can
produce 1 to 999 pump strokes. The minimum pulse width for input pulses is 10 mSec.
(1) Power ON
When power is applied to the pump, the green indicator above
ON lights up, the display momentarily shows the software version
("Vx.xE"), and the controller goes to whatever mode the pump
was in when power was disconnected. If being powered for the
first time, the stroke rate is then displayed, the "WAIT" is lit, and
pump is then in the Wait Mode.
(2) Selecting the mode of EXT operation:
Press the EXT and the keys simultaneously. The WAIT
backlight disappears, the SET backlight is lit, and the display
shows "dIG" or "ANA" (if "dIG" is displayed, skip to step 3).
Change the mode by pressing the key. Every time the key
is pressed, it toggles between the ANA and dIG modes. (Pump is
shipped from the factory preset in the dIG mode)
(3) Move to the Pulse Input Memory menu:
Press EXT while dIG is displayed and "/--OF" or "/--ON" will be
displayed. "/--OF" is the default set at the factory as it is rarely
needed or used.
Pulse Input Memory: As digital pulses come into the pump –
whether the pump will operate faster than the pulses (MULT) or
at a fraction of the speed (DIV) – internal memory can be set to
store these pulses if they come in too fast for the pump to keep
up. Once the incoming pulses slow or stop, the pump will work
off the excess pulses. The factory default settings are that the memory is OFF for the divide mode and ON for the
multiply mode. A max. of 255 pulses can be stored.
NOTE! In the Multiply mode, stored pulses can cause the pump to run excessively after incoming pulses (usually
indicating flow) have stopped. This could cause injection into a stagnant pipe.
(4) Use the and keys to toggle the divide memory ON and OFF.
These will change the display between "/--OF" and "/--ON".
(5) Pressing the EXT key moves to the memory setting for the
MULT mode. "X--ON" is the default setting. Pressing the
and keys will toggle the display between "X--ON" and "X--
OF".
17
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