Dionex AXP/AXP-MS Manual
Single-Signal Level: To enable this m ode of operation, the PUMP-
STOP input m ust be perm anently connected to COM with a jum per
wire. To start the pum p, put a low logic level on the PUMP-RUN
input. To stop the pum p, put a hi gh logic level on the PUMP-RUN
input.
7.2.5 Enable Input
When activated (ENABLE IN is at a low logic level), the ENABLE IN
input disables flow rate control on the front panel and enables flow
rate control on the rear panel.
7.2.6 General Information on Voltage and Frequency Inputs
Special programming and circuitry allows this pump to be operated
remotely with the flow rate controlled by voltage or frequency inputs.
To select the remote mode of operation:
a.) With the pump plugged in and the rear panel power
switch OFF, press and hold the down arrow button while
turning the power switch ON.
b.) Release the down arrow button and either a U (closest
approximation to V for voltage) or an F (for frequency) will be
displayed.
c.) Select the desired remote operating mode by pressing
the down arrow button to toggle between the voltage and
frequency modes.
d.) Press the RUN/STOP button to place the pump in the
normal operating mode.
e.) To enable the currently selected remote mode (voltage
or frequency), connect the rear panel ENABLE IN connection
to the COM connection.
f.) When in the remote mode (ENABLE IN at a low logic
level), all front panel buttons remain active except the flow
setting increase/decrease capability.
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