Doc No. 006-0211-00 Rev AD
Page 50 of 62
Scout-3000 4-20mA Port Setup
The 4-20mA Port Setup menu allows you to configure the optional 4-20mA current
output loops.
The term
Channel
reflects which gauge sensor is connected to the current loop. The
single 4-20 mA card is channel 1.
The
4 mA
allows you to set the value that the 4 mA of current will reflect. In the
example in Figure 50, a reading of 0.0 PSI will output 4 mA.
The
20 mA
allows you to set the value that the 20 mA of current will reflect. In this
example, a reading of 5000.0 PSI will output 20 mA.
Alarms:
It is possible to set high and low trip alarm points on the 4-20 mA current loops.
In this example, a reading under -5.0 PSI or above 5050.0 PSI will trip the alarm
For example, you could setup a SCADA system to turn the motor off if 12.0 mA
current is received which could represent a particular intake pressure.
Note: The 4-20 mA current loops can actually output 0 to 24 mA, so this alarm
current could be set outside the 4-20 mA range for easy detection.
Trim 4.00 mA
and
Trim 20.00 mA
allow you to calibrate the 4-20 mA output with your
loop measuring equipment. Select
Trim 4.00 mA
and adjust the setting until your
system reads as close to 4.00 mA as possible. Select
Trim 20.00 mA
and adjust the
setting until your system reads as close to 20.00 mA as possible.
Figure 50. Scout-3000 4-20mA Current Loop Configuration Menu
