34 310531
Configuring the PrecisionFlo Module
Setting the Flow-Meter K-Factor
If your PrecisionFlo unit has a flow meter, you need to
set the K-factor.
The flow meter sends an electrical pulse to indicate the
passage of a specific amount of material. The K-factor
represents the volume of material required to cause
one pulse. The manufacturer prints the K-factor on the
flow meter’s label. You will enter that number during
this procedure.
1.
On the control pendant:
HOME
SETUP
Protected Setup
2.
Key in the password, then press
[ENTER]
.
3.
Then go to:
PROTECTED SETUP
Flowmeter K-factor
4.
You see:
–FLOWMETER K-FACTOR–
Enter Number Of
cc/pulse
.xxxx
5.
Key in the 4-digit K-factor value (the number of
cubic centimeters of material the flow meter
passes for each pulse). The PrecisionFlo software
automatically enters the decimal point. Then press
[ENTER]
.
6.
Press
[HOME]
to return to the HOME screen.
7.
Press either
[BACK]
to return to the
PROTECTED SETUP menu or
[HOME]
to return
to the HOME screen.
Calibrating Flow Rate and Setting Module
Operation Mode
When you calibrate the flow rate you are performing 2
functions:
selecting whether the PrecisionFlo module will be
operating in pressure mode or flow mode
calibrating flow rate
The PrecisionFlo module has two modes of operation,
pressure mode and flow mode. You can only use flow
mode if your PrecisionFlo configuration includes a flow
meter. After you determine the mode and enter the
appropriate flow information, the PrecisionFlo module
automatically calibrates the flow rate.
Using Pressure Mode
In pressure mode, you enter the maximum outlet
pressure and the PrecisionFlo module calculates a
linear ratio of outlet pressure to the robot’s analog
input voltage.
For example: If you enter 1000 psi as your maximum
outlet pressure, the PrecisionFlo module would relate
an input voltage of 10 volts to 1000 psi and 0 volts to 0
psi. As shown in the graph below, every value be-
tween 0 and 1000 psi then has a linear relationship to
the analog voltage.
0
0
10
1000
Pounds per Square Inch (PSI)
Volts
(Vdc)
Pressure in
5
500
7.5
750
Fig. 25
Pressure mode: psi to analog voltage ratio