Connecting Generic Ma Device - Honeywell XNX Quick Start Manual

2�8�2 Connecting Generic mA Device
IR personality type provides for a Generic mA input under sensor type configuration.
The XNX can be used to convert the mA input to be read over HART protocol or
optional Modbus and set optional relays (if equipped). Additional configuration of
gas type and unit ID for reporting is required (see XNX Technical Manual Section
2.51 Gas Selection). For Generic mA devices, input values below 3mA will generate
Fault 155.
Use the following schematics to set S3 and S4 to the same output type that appears
on the wire tag of the mA device.
XNX S3 and S4 should be in the UP position
Set mA Device and XNX to the same output type.
XNX
24V 7W Max
+IR
R
L
Signal
XNX S3 and S4 should be in the DOWN position
Set mA Device and XNX to the same output type.
XNX
+IR
Signal
R
L
-IR
Figure 18. Generic mA Device Sink/Source Schematic
XNX Universal Transmitter Quick Start Guide
1-7
1-9
-IR
1-8
1-7
1-9
Current
Flow
1-8
mA Device
+V
+mA
Current
Flow
-V
XNX mA Input Sink Configuration
mA Device
+V
-mA
-V
XNX mA Input Source Configuration
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