D-Series Syringe Pumps - Isco

D Series Syringe Pumps
Section 3 Single & Multiple Independent Pump Operation
Note
If you make an error, press the CLEAR ENTRY key to delete
your last keystroke. Each time you depress the CLEAR ENTRY
key, you will delete back a character.
4. Press the ENTER key once the desired pressure is displayed.
5. Press the RUN key to initiate pump operation.
3.7 External Control The pump can be externally controlled for pressure or flow rate
operation with an analog voltage or through the serial interface.
Controlling the pump with an analog voltage is discussed in
section 3.3.8.
The serial interface allows you to control the pump operation
from an IBM-PC or compatible computer which has an RS-232-C
serial output. The serial interface accepts English command
words from the computer, like constant pressure, refill, etc. For
more information see Section 6, Serial Interface.
3.8 Remote RUN/STOP The D series syringe pump RUN/STOP function can be externally
controlled by a switch contact closure or TTL input. The
input voltage is 5 volts and is internally pulled high (RUN). The
input is level sensitive (must remain high for RUN or low for
STOP) and must be high for normal operation of serial (RS-232)
control.
To use the remote RUN/STOP feature, first press RUN or force
the RUN/STOP pin low to enable the pump. Thereafter the
RUN/STOP pin will control operation. Pressing STOP on the
front panel will override the RUN/STOP pin.
3.8.1 Wire Connections Two wires are required for external RUN/STOP control. The
digital common or ground wire should be connected to one of the
four DIGITAL GROUND terminals of the ACCESSORY connector
on the controller rear panel. The control wire should be
connected to terminal 1, under DIGITAL INPUT. If an electrically
isolated relay is used, one relay terminal should be connected
to digital ground and the other to terminal 1, under
DIGITAL INPUT.
If two pumps are used with the controller, the second control wire
should be connected to terminal 2, under DIGITAL INPUT.
If three pumps are used with the controller, the third control wire
should be connected to terminal 3, under DIGITAL INPUT or to
auxiliary (P11) pin 17.
3.9 Analog Flow Rate and
Volume Output Option
The purpose of the analog output option (P/N 68-1247-070) is to
provide for analog monitoring of the syringe pump flow rate. If
two or less pump modules are connected to the controller, pump
volume delivered can also be monitored via the analog output.
These outputs are often used with analog based plant or process
monitoring equipment.
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