Setup And Adjustments - Johnson Controls C450CCN-2 Installation Instructions Manual

Setup and Adjustments

System 450 Component Requirements
A System 450 control system consists of one control
module, one to three control sensor inputs, and one to
ten outputs that provide On/Off control and/or analog
control. Figure 3 shows an example System 450
module assembly with two input sensors and three
outputs (two relay outputs and one analog output).
Setting Up a System 450 Module Assembly
To set up a System 450 module assembly:
1. Determine the controlled conditions, sensor types,
and value ranges required for your application, and
select the appropriate System 450 sensor types.
2. Determine the number and type (relay or analog) of
outputs required to control your application, and
select the appropriate System 450 control module
and expansion modules to provide the outputs.
3. Assemble the control and expansion modules in
the proper order, starting with the control module
on the left.
Note: If you use a C450YNN-1 power module, it
must be plugged into the control module. Plug in
any expansion modules (for your control system) to
the right of the power module.
4. Apply supply power to the module assembly.
You can now set up your control system in the
System 450 reset control module UI.
Note: After you power on your module assembly, you
can set up your control system in the control module UI
before wiring the sensors or outputs to your assembly.
Setting Active/Passive Sensor Jumpers
Before putting your System 450 reset control system
into operation, you must set up each sensor in your
system as either passive or active by positioning the
jumper on the terminal pins on the terminal block
located below the sensor terminal block. See Figure 3.
Temperature sensors are passive (two-wire) sensors
and the corresponding jumpers must be positioned
across both pins. Humidity and pressure transducers
are active (three-wire) sensors and corresponding
jumpers must be positioned on one pin (or removed
completely). Figure 5 shows the jumper positions for
the System 450 example shown in Figure 3.
System 450™ Series Control Modules with Relay Outputs Installation Instructions
Sensor 1:
(or removed) sets Sn-1 to Active (Pressure).
Sensor 2:
pins sets Sn-2 to Passive (Temperature).
Sn-1
Sn-2
Sensor 3:
Sn-3 pins sets Sn-3 to Passive (Temperature).
Figure 5: Active/Passive Sensor Terminal Pin
Block Set Up for the Example in Figure 3
Setting Up a Control System in the User
Interface
System 450 control modules have a backlit LCD and a
four-button touch pad UI (Figure 4) that enable you to
set up your control system. To set up a control system
in the System 450 UI:
1. Build your control system module assembly and
connect it to power. See Setting Up a System 450
Module Assembly on page 5.
Note: Every time a module assembly is powered
ON, the control module polls all of the modules to
identify output type (relay or analog) and assigns a
sequential output number (1 to 9 [0 = 10]) to each
output starting with the control module output on
the left. The output numbers identify each output's
setup screens in the UI. (See Figure 4.)
2. Access the System 450 setup screens in the UI.
See Accessing the System 450 Setup Start
Screens on page 7.
3. Set up the control system inputs in the UI. See
Setting Up System 450 Sensors on page 7.
4. Set up the control system outputs in the UI. See
Setting Up System 450 Outputs on page 10.
IMPORTANT: Do not change the module positions
after a System 450 control system is set up in the UI.
System 450 control logic is set up in the UI according
to the Sensor Types, the output types, and the output
numbers. Changing modules or module positions in a
module assembly that is already set up in the UI can
change the output numbers, output types, and the
setup values of the assembly outputs, which requires
setting up the outputs again.
Use the worksheet provided on page 24 to plan and
record the settings for your System 450 control system.
Jumper positioned on one pin
Jumper positioned across two
Jumper positioned across two
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