COX EC80 - Analog Output Configuration

Conguring Flow processor Outputs and Inputs
Page 31 CXX-UM-03060-EN-01April 2019
Analog Output (Channels 1, 2, 3 and 4)
Figure 24: Analog out 1 tab
Use the Analog Out tables to configure the EC80 Flow Processor’s analog channels.
Use this table to completely configure the type of information and scaling. Not
all EC80 Flow Processor boards have an analog output. If yours does, use this
procedure. You can select the engineering unit for things such as volumetric flow
rate, mass flow rate and temperature.
OTE:N The EC80 Flow Processor needs to be jumper-configured prior to selecting
the corresponding electrical type. See “Wiring and Jumpers” on page12
for more information.
The electrical waveform needs to match your board’s jumper configuration.
1. Select the bullet next to the waveform for which the ow processor’s analog
channel is jumper-congured (0…5V DC, 0…10V DC or 4…20 mA).
2. Select the engineering unit from the drop-down menu.
3. Fill the tables according to instructions in “Table Data Entry” on page25. The
rst entry typically corresponds to zero ow, and is set to 0V DC or mA.
Calibrate Analog Channels
In addition to adjusting the scaling and determining the unit of measurement,
you need to calibrate the analog channels. Typically, 10 points are performed in
calibration, evenly spaced throughout the range of the channel. For instance,
on a 0…10V channel, the output would be calibrated at 1, 2, 3, 4, 5, 6, 7, 8, 9 and
10V DC.
1. Use a multimeter to monitor the output.
2. Press the left or right arrows to adjust the Digital-to-Analog Converter (DAC)
counts until the multimeter reads the correct value.
3. Click Set Output to store the number of DAC counts and move on to the next
index point.
Use the summation check box for totalizing (accumulation) of the frequency
output. This feature is only applicable to special firmware editions. The feature
needs to be configured at the factory and is not available in standard applications.
The feature works by summing flow rates and outputting a frequency
proportional to total flow, not flow rate.