System 450 Compatible Sensors And Transducers - Johnson Controls Penn System 450 Series Technical Bulletin

System 450 Compatible Sensors and Transducers

System 450 standard control modules are designed to operate with a variety of
compatible sensors and transducers. The System 450 compatible sensors and
transducers cover a wide range of temperature, pressure, and humidity conditions.
Note: System 450 compatible sensors consist of temperature sensors, humidity
sensors, and pressure transducers. The term sensor refers to all System 450
compatible input devices including transducers, unless noted otherwise.
System 450 compatible sensors also come in a variety of styles and configurations,
allowing you to select the sensor or transducer that best fits your control system
requirements. See Table 11 through Table 20 in Repair and Ordering Information
on page 62 for more information on System 450 compatible sensors.
You can connect up to three sensors to a System 450 control module at the
low-voltage terminal block. See Wiring System 450 Components on page 37 for
more information on System 450 sensor wiring terminals on control modules.
Refer to the System 450 module installation instructions and the sensor installation
instructions referenced in Related Documentation on page 5 for information on
installing, wiring, operating, troubleshooting, and replacing System 450
compatible sensors.
For each sensor in your control system, you must select the sensor's corresponding
Sensor Type when you set up the sensors in the System 450 UI. A sensor's
corresponding Sensor Type determines the controlled condition, unit of
measurement, minimum differential, setup values, and ranges for each output that
is set up to reference the sensor.
See Table 2 on page 16 for information about Sensor Types, the corresponding
output setup values and ranges, sensor models, and transducer models used in
standard System 450 control systems.
System 450 automatically designates the sensor connected to the Sn1 terminal and
a common (C) terminal as the Sn-1 sensor in the UI. The sensor connected to the
Sn2 and a C terminal is designated Sn-2, and the sensor connected to Sn3 and a C
terminal is designated Sn-3. You set up each sensor in the corresponding sensor
setup screens in the UI.
Note: For a System 450 control system to operate properly, you must wire the
correct sensor or transducer model to the correct sensor input terminals on
the control module and select the correct Sensor Type in the corresponding
Select Sensor Type screen in the System 450 UI. You must also set the
active/passive sensor jumpers or switches on the control module correctly
for each sensor or transducer connected to your control system.
See on page 40 and Setting Up the Sensors and Transducers on page 45 for more
information and procedures on setting up sensors and Sensor Types in the System
450 UI. See Active and Passive Sensors on page 17 for information on setting the
active/passive switches and jumpers.
System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 15