PF2100 4-20mA Input Card User Manual v1.2
©2021 Profire Energy Inc
June 2, 2021
Page 10
Electrical Wiring
The following steps should be followed to wire up the pluggable header on the 4-20mA Input Card. More detailed instructions for each step can be found later
in this section of the document.
1.
Disconnect power from the PF2100 to prevent accidentally shorting any component of the system.
2.
Remove the pluggable header from the 4-20mA Input Card.
3.
Wire up the “Level” Current Loop using either the onboard or an
external power supply.
4.
Wire up the “Level” Status Contacts if required
.
5.
Wire up the “Pressure” Current Loop using either the onboard or an external power supply.
6.
Ensure that nothing is connected to the “Auxiliary” Current Loop input
.
7.
Replace the pluggable header back onto the 4-20mA Input Card and ensure that it is fully inserted.
8.
Reconnect power to the PF2100.
The Pluggable Header
The terminal block on the 4-20mA card includes a pluggable header. You may find it easier to wire up if you first
remove the pluggable header from the 4-20mA Input Card by pulling it out as shown in Figure 9.
The pluggable header has set screws to loosen or tighten the wire cages on the front of the connector. Turn the screw
clockwise to raise and thus tighten the cage. Turn the screw counter clockwise to lower and thus loosen the cage.
Wires should not be stripped longer than 9mm to prevent bare conductor from being exposed after
insertion into the terminal block.
Insert each wire fully into the front of the pluggable header and then ensure that the corresponding set
screws are tight enough to securely clamp the wires in place.
Connecting the “Level”
Current Loop Using the Onboard Power Source
If after
consulting the “
” section of this document you have determined that it is acceptable
to use the 4-
20mA Input Card’s Onboard Power Source, then wire the pl
uggable header according to
Figure 10.
Figure 9
Figure 10
