Johnson Controls System 450 Series Installation Instructions And Operators Manual page 39

Table 16: System 450 Web UI Sensor Configuration Page User Actions, Descriptions, and References (Part
2 of 3)
Callout Identifier / Item
Number Name
5 (Temperature)
Offset
(Sn-1)
6 Sensor Name
(Sn-1)
7 Sn-2: Sensor 2
8 Sensor Type
(Sn-2)
9 (Temperature)
Offset
(Sn-2)
10 Sensor Name
(Sn-2)
11 Sn-3: Sensor 3
12 Sensor Type
(Sn-3)
13 (Temperature)
Offset
(Sn-3)
System 450™ Series Control Module with Ethernet Communications Installation Instructions
User Actions, Descriptions, References
Enter an offset value for temperature sensors (only).
Note: You cannot select an offset value for pressure or humidity sensors. When the
sensor type is a pressure or humidity sensor type, the 0 (zero) value in the Offset field is
gray and cannot be changed.
In this example, the Sn-1 Sensor Type is P 500 (pressure sensor). Therefore, a
temperature offset value cannot be selected.
Assign a web UI sensor name for the Sn-1 sensor by entering a 16-character (maximum)
name in this field.
Note: You are not required to assign a sensor name. When you assign a sensor name,
the assigned Sn-1 sensor name is displayed on the Overview page, the System
Configuration page, and the Output Configuration pages for outputs that reference Sn-1.
In this example, the assigned sensor name is Con Press Cntrl.
Sensor 2 Configuration Section: Select the Sn-2 sensor type, select an offset value (only if
Sn-2 is a temperature sensor), and assign a name for Sn-2.
Click the drop-down menu arrow to select the desired sensor type for Sn-2. The selected
sensor type determines the condition, the units of measurement, range of usable values,
resolution increments, and minimum proportional or control band for each output that
references Sn-2.
In this example, the °F sensor type is selected for Sn-2.
Enter an Offset value for temperature sensors (only). Enter the desired value to offset the
displayed temperature from actual sensed temperature.
Sensor Type °F allows an offset of up to +/- 5°F in 1 degree increments.
Sensor Type °C allows an offset of up to +/- 2.5°C in 0.5 degree increments.
Note: You cannot select an offset value for pressure or humidity sensors. When the
sensor type is a pressure or humidity sensor type, the 0 (zero) value in the Offset field is
gray and cannot be changed.
In this example, the Sn-2 sensor type is °F (temperature sensor), and 0 is selected for the
Temperature Offset value.
Assign a web UI sensor name for the Sn-2 sensor by entering a 16-character (maximum)
name in this field.
Note: You are not required to assign a sensor name. When you assign a sensor name,
the assigned Sn-2 sensor name is displayed on the Overview page, the System
Configuration page, and the Output Configuration pages for outputs that reference Sn-2.
In this example, the assigned sensor name is Room Temp Cntrl.
Sensor 3 Configuration Section: Select the Sn-3 sensor type, select an offset value (only if
Sn-3 is a temperature sensor), and assign a name for Sn-3.
Click the drop-down arrow to select the desired sensor type for Sn-3. The selected sensor
type provides the condition, the units of measurement, range of usable values, resolution
increments, and minimum proportional or control band for each output that references
Sn-3.
In this example, the rH sensor type is selected for Sn-3.
Enter an Offset value for temperature sensors (only).
Note: You cannot select an offset value for pressure or humidity sensors. When the
Sensor Type is a pressure or humidity sensor type, the 0 (zero) value in the Offset field is
gray and cannot be changed.
In this example, the Sn-3 sensor type is rH (humidity sensor). Therefore, a temperature
offset value cannot be selected.
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