Technical Specifications - Johnson Controls System 450 Series Installation Instructions Manual

Table 7: System 450 Analog Output Setup Screens Information (Part 2 of 2)
LCD Screen Name, Description/Function, User Action, Example
Sensor Failure Mode Selection Screen:
OFF
8. Press UP or DOWN to select this output's mode of operation if the sensor or sensor wiring
fails. Press NEXT to save your selection and go to the Edit Sensor Selection screen.
SNF
3
You can select this output's mode of operation in the event of a sensor or sensor wiring failure. The output
operates in the selected mode until the failure is fixed. Sensor Failure Mode selections for Analog Outputs
include:
• ON - output generates maximum signal strength during sensor failure.
• OFF- output generates minimum signal strength during sensor failure.
Example shows the OFF Sensor Failure Mode selected for Output 3.
Edit Sensor Selection Screen: Press Up or Down to change the sensor that this output references (only
if required), then press Next to go to this output's setup start screen.
Sn-1
Note: Changing the sensor that an output references to a sensor with a different Sensor Type changes
SENS
3
the default setup values for the output, and requires setting up the output again.
Example shows input Sensor 1 selected for Output 3.

Technical Specifications

C450CxN-1 (Part 1 of 2)
Product
Supply Power
Ambient Operating Conditions
Ambient Shipping and Storage
Conditions
Input Signal
Analog Output
Analog Input Accuracy
Control Construction
Dimensions (H x W x D)
Weight
System 450™ Series Control Modules with Analog Outputs Installation Instructions
C450CxN-1: System 450 Control Module models are sensing controls and operating
controls with LCD, four-button touch pad, and analog output.
C450CPN-1: Control Module with One Analog Output
C450CQN-1: Control Module with Two Analog Outputs
C450YNN-1 Power Supply Module or
24 (20-30) VAC Safety Extra-Low Voltage (SELV) (Europe) Class 2 (North America)
50/60 Hz, 10 VA minimum
Temperature: -40 to 66°C (-40 to 150°F) when using 0-10 VDC outputs;
-40 to 40°C (-40 to 104°F) when using 4-20 mA outputs
Humidity: Up to 95% RH noncondensing; Maximum Dew Point 29°C (85°F)
Temperature: -40 to 80°C (-40 to 176°F)
Humidity: Up to 95% RH noncondensing; Maximum Dew Point 29°C (85°F)
0-5 VDC; 1035 ohms at 25°C (77°F) for an A99 PTC Temperature Sensor
Voltage Mode (0–10 VDC):
10 VDC maximum output voltage
10 mA maximum output current
Requires an external load of 1,000 ohm or more
Note: The AO operates in Voltage Mode when connected to devices with
impedances greater than 1,000 ohm. Devices that drop below 1,000 ohm may not
operate as intended for Voltage Mode applications.
Current Mode (4–20 mA):
Requires an external load between 0–300 ohm
Note: The AO operates in Current Mode when connected to devices with
impedances greater than 1,000 ohm. Devices that drop below 1,000 ohm may not
operate as intended for Current Mode applications.
Resolution: 14 bit
Independently-mounted control, surface mounted with Lexan® 950 enclosure suitable
for DIN rail mounting or direct mounting to a hard, even surface.
127 x 61 x 61 mm (5 x 2-3/8 x 2-3/8 in.)
C450CPN-1: 195 g (0.43 lb)
C450CQN-1: 195 g (0.43 lb)
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