Johnson Controls System 450 Series Installation Instructions Manual page 8

Setting up a Relay Output (OUTR
Relay outputs provide On/Off control for the equipment
in your application based on input from the sensor the
output is set up to reference. See Table 5 for relay
output setup information and procedures.
Table 5: System 450 Relay Output Setup Screen Information, and User Actions
LCD Screen Name, Description/Function, User Action, and Example
Relay Output Setup Start Screen: Output number and the output type (relay or analog) are
-- -
automatically assigned when you connect power to your control system's module assembly.
Note: You must set up the system's sensors before you can set up the outputs.
OUTR
1
1. Press NEXT to go to this output's Sensor Selection screen.
Example shows the Relay Output Setup-Start screen for Output 1.
Sensor Selection Screen: The sensor you select here determines this output's setup parameters and
--
values, including condition type, unit of measurement, minimum differential, default setup values, and
setup value ranges for several of the remaining output setup screens. If a sensor is not selected here, this
SENS
output's remaining setup screens do not appear. If a sensor is already selected for this output, the Sensor
Selection screen does not appear here, instead the Relay ON Selection screen appears.
Note: You must select a sensor in this Sensor Selection screen and the selected sensor must be already
Sn-2
set up in the System 450 UI. (See Setting up System 450 Sensors.)
2. Press UP or DOWN to select the Sensor (Sn-1, Sn-2, or Sn-3) that this output references. Press
SENS
NEXT to save your sensor selection and go to the Relay ON Selection Screen.
Example shows input Sensor 2 selected for Output 1.
Relay ON Selection Screen: Select the value at which the relay turns On. Relay ON is defined as relay
78
LED On/Lit, relay contacts NO to C are closed, and NC to C contacts are open.
Note: The value ranges and minimum differential are determined by the Sensor Type selected for the
ON
1
sensor that this output references and are enforced in the Relay ON and Relay OFF Selection screens.
3. Press UP or DOWN to select the value at which the output relay turns On. Press NEXT to save
your selection and go to Relay OFF Selection Screen.
Example shows an ON value of 78 (°F) selected for Relay Output 1.
Relay OFF Selection Screen: Select the value at which the relay turns Off. Relay OFF is defined as
relay LED Off, relay contacts NC to C are closed, and NO to C contacts are open.
Note: The value ranges and minimum differential are determined by the Sensor Type selected for the
OFF
1
sensor that this output references and are enforced in the Relay ON and Relay OFF Selection screens.
4. Press UP or DOWN to select the value at which output relay turns Off. Press NEXT to save
your selection and go to Minimum Relay ON TIme Selection Screen.
Example shows an OFF value of 75 (°F) selected for Relay Output 1.
Minimum Relay ON Time Selection Screen: Minimum ON Time range is 0 to 300 seconds.
0
5. Press UP or DOWN to select the minimum time that the output relay remains On after reaching
the Relay ON value. Press NEXT to save your selection and go to the Minimum Relay OFF Time
ONT
1
Selection Screen.
Example shows 0 (zero) seconds selected for the minimum ON-Time for Output 1.
Minimum Relay OFF Time Selection Screen: Minimum OFF Time range is 0 to 300 seconds.
120
6. Press UP or DOWN to select the minimum time that this output relay remains Off after reaching
the Relay OFF value. Press NEXT to save your selection and go to the Sensor Failure Mode
OFFT
1
Selection screen.
Example shows 120 seconds selected for the minimum OFF-Time for Output 1.
Sensor Failure Mode Selection Screen: Select this output's mode of operation if the referenced sensor
OFF
or sensor wiring fails. The output operates in the selected mode until the failure is remedied.
Sensor Failure mode selections for Relay Outputs include:
SNF
1
• ON output relay remains On during sensor failure.
• OFF output relay remains Off during sensor failure.
7. Press UP or DOWN to select this output mode of operation if the sensor or sensor wiring fails.
Press NEXT to save your sensor failure mode selection and go to the Edit Sensor Screen.
Example shows OFF sensor failure mode selected for Output 1. This output relay is Off if the referenced
sensor or sensor wiring fails.
8 System 450™ Series Control Modules with Analog Outputs Installation Instructions
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