Pulse Mode - LMI Excel XR Series Installation & Operation Manual

OPERATION
Press Left or Right to navigate to the parameter entry boxes. Enter the desired
flow rates and currents at points P1 and P2. The range of allowable values for flow rate
are from zero to the maximum capacity of the pump. Input signal current can range from
0.0 to 20.0 mA. Press Save to retain the entered values and Exit to return to the
analog mode home screen. Press Exit without pressing Save to exit without
modifying the parameters.
The linear relationship between signal current and flow can be increasing or decreasing.
If the input signal is outside the operating range defined by the values entered by the
user, the pump output will plateau at the defined flow limits. If the current exceeds 22 mA
the Signal Over Range icon will appear in the notification bar.
Any input current value of 0.5 mA or less will cause the pump to stop pumping and the
Loss of Signal icon will appear in the notification bar. The pump status indicator will
remain green, showing the pump is still in "run" mode. When the input current rises
above 0.5 mA again, the pump will resume pumping and the Loss of Signal icon
will be cleared from the notification bar.
Press the Start / Stop button to make the pump dose at the calculated flow rate. Starting
and stopping can be done manually by pushing the Start / Stop button or remotely using
the Remote Start / Stop function.

4.2 Pulse Mode

In pulse mode, the pump delivers a programmable volume of fluid, for a programmable
number of incoming pulses from an external device (typically a flow meter). The result is
a flow output that varies as the frequency of the incoming pulses varies, allowing the
pump to track the external input.
From the pulse mode home screen (Figure 3) press the Up or Down buttons to get to
the pulse adjust screen (Figure 4).
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